cgribexlib.c 264 KB
Newer Older
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1

Uwe Schulzweida's avatar
Uwe Schulzweida committed
2
/* Automatically generated by m214003 at 2012-05-04, do not edit */
3

4
/* CGRIBEXLIB_VERSION="1.5.2" */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
5

Uwe Schulzweida's avatar
Uwe Schulzweida committed
6
7
8
9
#ifdef _ARCH_PWR6
#pragma options nostrict
#endif

Uwe Schulzweida's avatar
Uwe Schulzweida committed
10
11
12
13
14
15
16
17
18
#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif

#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include <sys/types.h>

Uwe Schulzweida's avatar
Uwe Schulzweida committed
19
20
//#undef _GET_X86_COUNTER
//#undef _GET_IBM_COUNTER
Uwe Schulzweida's avatar
Uwe Schulzweida committed
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
//#undef _ARCH_PWR6
//#undef __AVX__
//#undef __SSE2__

#ifdef _GET_IBM_COUNTER
#include <libhpc.h>
#endif

#ifdef __AVX__
#include <float.h>
#include <stdint.h>
#include <inttypes.h>
#include <immintrin.h>
#ifdef _GET_X86_COUNTER
#include <x86intrin.h>
#endif
#else
38
39
40
41
#ifdef __SSE2__
#include <float.h>
#include <stdint.h>
#include <inttypes.h>
Uwe Schulzweida's avatar
Uwe Schulzweida committed
42
#include <emmintrin.h>
Uwe Schulzweida's avatar
Uwe Schulzweida committed
43
#ifdef _GET_X86_COUNTER
44
45
#include <x86intrin.h>
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
46
47
#endif
#endif
48

Uwe Schulzweida's avatar
Uwe Schulzweida committed
49
50
51
#include "file.h"
#include "dmemory.h"
#include "dtypes.h"
Uwe Schulzweida's avatar
Uwe Schulzweida committed
52
#include "calendar.h"
53
#include "timebase.h"
Uwe Schulzweida's avatar
Uwe Schulzweida committed
54
55
56
57

#ifndef _GRIB_INT_H
#define _GRIB_INT_H

58
59
60
61
#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif

Uwe Schulzweida's avatar
Uwe Schulzweida committed
62
63
64
65
66
67
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <float.h>


Uwe Schulzweida's avatar
Uwe Schulzweida committed
68
69
#if ! defined   (_CGRIBEX_H)
#  include "cgribex.h"
Uwe Schulzweida's avatar
Uwe Schulzweida committed
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
#endif
#if ! defined   (_ERROR_H)
#  include "error.h"
#endif
#if ! defined   (_DTYPES_H)
#  include "dtypes.h"
#endif

#if ! defined   (FALSE)
#  define  FALSE  0
#endif

#if ! defined   (TRUE)
#  define  TRUE  1
#endif

#if ! defined   (UCHAR)
#  define  UCHAR  unsigned char
#endif

Uwe Schulzweida's avatar
Uwe Schulzweida committed
90

Uwe Schulzweida's avatar
Uwe Schulzweida committed
91
#if defined (CRAY) || defined (SX) || defined (__uxpch__)
Uwe Schulzweida's avatar
Uwe Schulzweida committed
92
93
94
95
#  define VECTORCODE
#endif

#if defined (VECTORCODE)
Uwe Schulzweida's avatar
Uwe Schulzweida committed
96
#if  defined  (INT32)
97
#  define  GRIBPACK     unsigned INT32
Uwe Schulzweida's avatar
Uwe Schulzweida committed
98
99
100
#  define  PACK_GRIB    packInt32
#  define  UNPACK_GRIB  unpackInt32
#else
101
#  define  GRIBPACK     unsigned INT64
Uwe Schulzweida's avatar
Uwe Schulzweida committed
102
103
104
#  define  PACK_GRIB    packInt64
#  define  UNPACK_GRIB  unpackInt64
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
105
106
107
#else
#  define  GRIBPACK     unsigned char
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
108

Uwe Schulzweida's avatar
Uwe Schulzweida committed
109
110
#define  U_BYTEORDER     static union {unsigned long l; unsigned char c[sizeof(long)];} u_byteorder = {1}
#define  IS_BIGENDIAN()  (u_byteorder.c[sizeof(long) - 1])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
111

Uwe Schulzweida's avatar
Uwe Schulzweida committed
112
#if defined (__xlC__) /* performance problems on IBM */
Uwe Schulzweida's avatar
cleanup    
Uwe Schulzweida committed
113
114
115
116
#ifndef DBL_IS_NAN
#  define DBL_IS_NAN(x)     ((x) != (x))
#endif
#else
117
118
#ifndef DBL_IS_NAN
#if  defined  (HAVE_ISNAN)
119
#  define DBL_IS_NAN(x)     (isnan(x))
120
#elif  defined  (FP_NAN)
121
122
123
124
125
#  define DBL_IS_NAN(x)     (fpclassify(x) == FP_NAN)
#else
#  define DBL_IS_NAN(x)     ((x) != (x))
#endif
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
126
#endif
127

128
129
130
131
132
#ifndef DBL_IS_EQUAL
/*#define DBL_IS_EQUAL(x,y) (!(x < y || y < x)) */
#  define DBL_IS_EQUAL(x,y) (DBL_IS_NAN(x)||DBL_IS_NAN(y)?(DBL_IS_NAN(x)&&DBL_IS_NAN(y)?1:0):!(x < y || y < x))
#endif

133
134
135
#ifndef IS_EQUAL
#  define IS_NOT_EQUAL(x,y) (x < y || y < x)
#  define IS_EQUAL(x,y)     (!IS_NOT_EQUAL(x,y))
Uwe Schulzweida's avatar
Uwe Schulzweida committed
136
137
138
#endif


139
140
141
#define  JP23SET    0x7FFFFF  /* 2**23 - 1 (---> 8388607)  */

#define  POW_2_M24  0.000000059604644775390625  /*  pow(2.0, -24.0) */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
142
143
144

double intpow2(int x);

145
146
147
int gribrec_len(int b1, int b2, int b3);
int correct_bdslen(int bdslen, long recsize, long gribpos);

Uwe Schulzweida's avatar
Uwe Schulzweida committed
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/* CDI converter routines */

/* param format:  DDDCCCNNN */

void    cdiDecodeParam(int param, int *dis, int *cat, int *num);
int     cdiEncodeParam(int dis, int cat, int num);

/* date format:  YYYYMMDD */
/* time format:  hhmmss   */

void    cdiDecodeDate(int date, int *year, int *month, int *day);
int     cdiEncodeDate(int year, int month, int day);

void    cdiDecodeTime(int time, int *hour, int *minute, int *second);
int     cdiEncodeTime(int hour, int minute, int second);

Uwe Schulzweida's avatar
Uwe Schulzweida committed
164
165
166
167
168
169
170
171
/* CALENDAR types */

#define  CALENDAR_STANDARD        0  /* don't change this value (used also in cgribexlib)! */
#define  CALENDAR_PROLEPTIC       1
#define  CALENDAR_360DAYS         2
#define  CALENDAR_365DAYS         3
#define  CALENDAR_366DAYS         4
#define  CALENDAR_NONE            5
Uwe Schulzweida's avatar
Uwe Schulzweida committed
172
173
174

extern FILE *grprsm;

Uwe Schulzweida's avatar
Uwe Schulzweida committed
175
extern int  CGRIBEX_Debug;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
176
177
178
179
180
181
182
183
184
185

void   gprintf(const char *caller, const char *fmt, ...);

void   grsdef(void);

void   prtbin(int kin, int knbit, int *kout, int *kerr);
void   confp3(double pval, int *kexp, int *kmant, int kbits, int kround);
double decfp2(int kexp, int kmant);
void   ref2ibm(double *pref, int kbits);

Uwe Schulzweida's avatar
Uwe Schulzweida committed
186
187
188
189
void   scaleComplex(double *fpdata, int pcStart, int pcScale, int trunc, int inv);
void   scatterComplex(double *fpdata, int pcStart, int trunc, int nsp);
void   gatherComplex(double *fpdata, int pcStart, int trunc, int nsp);

Uwe Schulzweida's avatar
Uwe Schulzweida committed
190
191
192
void   scm0(double *pdl, double *pdr, double *pfl, double *pfr, int klg);
int    rowina2(double *p, int ko, int ki, double *pw,
	       int kcode, double msval, int *kret);
193
int    rowina3(double *p, int ko, int ki, double *pw,
Uwe Schulzweida's avatar
Uwe Schulzweida committed
194
	       int kcode, double msval, int *kret, int omisng, int operio, int oveggy);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
195
196
int    qu2reg2(double *pfield, int *kpoint, int klat, int klon,
	       double *ztemp, double msval, int *kret);
197
int    qu2reg3(double *pfield, int *kpoint, int klat, int klon,
Uwe Schulzweida's avatar
Uwe Schulzweida committed
198
	       double msval, int *kret, int omisng, int operio, int oveggy);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
199
200

#if  defined  (INT32)
Uwe Schulzweida's avatar
Uwe Schulzweida committed
201
long   packInt32(unsigned INT32 *up, unsigned char *cp, long bc, long tc);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
202
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
203
long   packInt64(unsigned INT64 *up, unsigned char *cp, long bc, long tc);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
204
#if  defined  (INT32)
Uwe Schulzweida's avatar
Uwe Schulzweida committed
205
long   unpackInt32(unsigned char *cp, unsigned INT32 *up, long bc, long tc);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
206
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
207
long   unpackInt64(unsigned char *cp, unsigned INT64 *up, long bc, long tc);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225

void  gribEncode(int *isec0, int *isec1, int *isec2, double *fsec2, int *isec3,
		 double *fsec3, int *isec4, double *fsec4, int klenp, int *kgrib,
		 int kleng, int *kword, int efunc, int *kret);

void  gribDecode(int *isec0, int *isec1, int *isec2, double *fsec2, int *isec3,
		 double *fsec3, int *isec4, double *fsec4, int klenp, int *kgrib,
		 int kleng, int *kword, int dfunc, int *kret);

#endif  /* _GRIB_INT_H */
#ifndef _GRIBDECODE_H
#define _GRIBDECODE_H

#define  UNDEFINED          9.999e20


#define  GET_INT3(a,b,c)    ((1-(int) ((unsigned) (a & 128) >> 6)) * (int) (((a & 127) << 16)+(b<<8)+c))
#define  GET_INT2(a,b)      ((1-(int) ((unsigned) (a & 128) >> 6)) * (int) (((a & 127) << 8) + b))
226
#define  GET_INT1(a)        ((1-(int) ((unsigned) (a & 128) >> 6)) * (int) (a&127))
Uwe Schulzweida's avatar
Uwe Schulzweida committed
227
228
229
230
231
232
233

/* this requires a 32-bit default integer machine */
#define  GET_UINT4(a,b,c,d) ((int) ((a << 24) + (b << 16) + (c << 8) + (d)))
#define  GET_UINT3(a,b,c)   ((int) ((a << 16) + (b << 8)  + (c)))
#define  GET_UINT2(a,b)     ((int) ((a << 8)  + (b)))
#define  GET_UINT1(a)       ((int)  (a))

Uwe Schulzweida's avatar
Uwe Schulzweida committed
234
235
236
#define  BUDG_START(s)      (s[0]=='B' && s[1]=='U' && s[2]=='D' && s[3]=='G')
#define  TIDE_START(s)      (s[0]=='T' && s[1]=='I' && s[2]=='D' && s[3]=='E')
#define  GRIB_START(s)      (s[0]=='G' && s[1]=='R' && s[2]=='I' && s[3]=='B')
Uwe Schulzweida's avatar
Uwe Schulzweida committed
237
#define  GRIB_FIN(s)        (s[0]=='7' && s[1]=='7' && s[2]=='7' && s[3]=='7')
Uwe Schulzweida's avatar
Uwe Schulzweida committed
238

Uwe Schulzweida's avatar
Uwe Schulzweida committed
239
/* GRIB1 Section 0: Indicator Section (IS) */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
240

241
#define  GRIB1_SECLEN(s)     GET_INT3(s[ 4], s[ 5], s[ 6])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
242
#define  GRIB_EDITION(s)     GET_UINT1(s[ 7])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
243

Uwe Schulzweida's avatar
Uwe Schulzweida committed
244
/* GRIB1 Section 1: Product Definition Section (PDS) */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
245
246
247
248
249
250
251
252
253
254
255
256
257
258

#define  PDS_Len             GET_UINT3(pds[ 0], pds[ 1], pds[ 2])
#define  PDS_CodeTable       GET_UINT1(pds[ 3])
#define  PDS_CenterID        GET_UINT1(pds[ 4])
#define  PDS_ModelID         GET_UINT1(pds[ 5])
#define  PDS_GridDefinition  GET_UINT1(pds[ 6])
#define  PDS_Sec2Or3Flag     GET_UINT1(pds[ 7])
#define  PDS_HAS_GDS         ((pds[7] & 128) != 0)
#define  PDS_HAS_BMS         ((pds[7] &  64) != 0)
#define  PDS_Parameter       GET_UINT1(pds[ 8])
#define  PDS_LevelType       GET_UINT1(pds[ 9])
#define  PDS_Level1          (pds[10])
#define  PDS_Level2	     (pds[11])
#define  PDS_Level	     GET_UINT2(pds[10], pds[11])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
259
#define  PDS_Year            GET_INT1(pds[12])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
#define  PDS_Month           GET_UINT1(pds[13])
#define  PDS_Day             GET_UINT1(pds[14])
#define  PDS_Hour            GET_UINT1(pds[15])
#define  PDS_Minute          GET_UINT1(pds[16])
#define  PDS_Date            (PDS_Year*10000+PDS_Month*100+PDS_Day)
#define  PDS_Time            (PDS_Hour*100+PDS_Minute)
#define  PDS_TimeUnit        GET_UINT1(pds[17])
#define  PDS_TimePeriod1     GET_UINT1(pds[18])
#define  PDS_TimePeriod2     GET_UINT1(pds[19])
#define  PDS_TimeRange       GET_UINT1(pds[20])
#define  PDS_AvgNum          GET_UINT2(pds[21], pds[22])
#define  PDS_AvgMiss         GET_UINT1(pds[23])
#define  PDS_Century         GET_UINT1(pds[24])
#define  PDS_Subcenter       GET_UINT1(pds[25])
#define  PDS_DecimalScale    GET_INT2(pds[26],pds[27])


Uwe Schulzweida's avatar
Uwe Schulzweida committed
277
/* GRIB1 Section 2: Grid Description Section (GDS) */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
278
279
280
281

#define  GDS_Len             ((gds) == NULL ? 0 : GET_UINT3(gds[ 0], gds[ 1], gds[ 2]))
#define  GDS_NV              GET_UINT1(gds[ 3])
#define  GDS_PVPL            GET_UINT1(gds[ 4])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
282
283
#define  GDS_PV	             ((gds[3] ==    0) ? -1 : (int) gds[4] - 1)
#define  GDS_PL	             ((gds[4] == 0xFF) ? -1 : (int) gds[3] * 4 + (int) gds[4] - 1)
Uwe Schulzweida's avatar
Uwe Schulzweida committed
284
285
286
#define  GDS_GridType        GET_UINT1(gds[ 5])


Uwe Schulzweida's avatar
Uwe Schulzweida committed
287
/* GRIB1 Triangular grid of DWD */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
288
289
290
291
292
293
294
295
296
297
#define  GDS_GME_NI2         GET_UINT2(gds[ 6], gds[ 7])
#define  GDS_GME_NI3         GET_UINT2(gds[ 8], gds[ 9])
#define  GDS_GME_ND          GET_UINT3(gds[10], gds[11], gds[12])
#define  GDS_GME_NI          GET_UINT3(gds[13], gds[14], gds[15])
#define  GDS_GME_AFlag       GET_UINT1(gds[16])
#define  GDS_GME_LatPP       GET_INT3(gds[17], gds[18], gds[19])
#define  GDS_GME_LonPP       GET_INT3(gds[20], gds[21], gds[22])
#define  GDS_GME_LonMPL      GET_INT3(gds[23], gds[24], gds[25])
#define  GDS_GME_BFlag       GET_UINT1(gds[27])

Uwe Schulzweida's avatar
Uwe Schulzweida committed
298
/* GRIB1 Spectral */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
299
300
301
302
303
304
#define  GDS_PentaJ          GET_UINT2(gds[ 6], gds[ 7])
#define  GDS_PentaK          GET_UINT2(gds[ 8], gds[ 9])
#define  GDS_PentaM          GET_UINT2(gds[10], gds[11])
#define  GDS_RepType         GET_UINT1(gds[12])
#define  GDS_RepMode         GET_UINT1(gds[13])

Uwe Schulzweida's avatar
Uwe Schulzweida committed
305
/* GRIB1 Regular grid */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
306
307
308
309
310
311
312
#define  GDS_NumLon          GET_UINT2(gds[ 6], gds[ 7])
#define  GDS_NumLat          GET_UINT2(gds[ 8], gds[ 9])
#define  GDS_FirstLat        GET_INT3(gds[10], gds[11], gds[12])
#define  GDS_FirstLon        GET_INT3(gds[13], gds[14], gds[15])
#define  GDS_ResFlag         GET_UINT1(gds[16])
#define  GDS_LastLat         GET_INT3(gds[17], gds[18], gds[19])
#define  GDS_LastLon         GET_INT3(gds[20], gds[21], gds[22])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
313
314
315
#define  GDS_LonIncr         GET_UINT2(gds[23], gds[24])
#define  GDS_LatIncr         GET_UINT2(gds[25], gds[26])
#define  GDS_NumPar          GET_UINT2(gds[25], gds[26])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
316
317
318
319
320
#define  GDS_ScanFlag        GET_UINT1(gds[27])
#define  GDS_LatSP           GET_INT3(gds[32], gds[33], gds[34])
#define  GDS_LonSP           GET_INT3(gds[35], gds[36], gds[37])
#define  GDS_RotAngle        GET_Real(&(gds[38]))

Uwe Schulzweida's avatar
Uwe Schulzweida committed
321
/* GRIB1 Lambert */
322
323
324
325
326
327
328
329
#define  GDS_Lambert_Lov     GET_INT3(gds[17], gds[18], gds[19])
#define  GDS_Lambert_dx	     GET_INT3(gds[20], gds[21], gds[22])
#define  GDS_Lambert_dy	     GET_INT3(gds[23], gds[24], gds[25])
#define  GDS_Lambert_ProjFlag GET_UINT1(gds[26])
#define  GDS_Lambert_LatS1   GET_INT3(gds[28], gds[29], gds[30])
#define  GDS_Lambert_LatS2   GET_INT3(gds[31], gds[32], gds[33])
#define  GDS_Lambert_LatSP   GET_INT3(gds[34], gds[35], gds[36])
#define  GDS_Lambert_LonSP   GET_INT3(gds[37], gds[37], gds[37])
330

Uwe Schulzweida's avatar
Uwe Schulzweida committed
331
/* GRIB1 Section 3: Bit Map Section (BMS) */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
332
333
334
335
336
337
338

#define  BMS_Len	     ((bms) == NULL ? 0 : (int) (bms[0]<<16)+(bms[1]<<8)+bms[2])
#define  BMS_UnusedBits      (bms[3])
#define  BMS_Numeric         
#define  BMS_Bitmap	     ((bms) == NULL ? NULL : (bms)+6)
#define  BMS_BitmapSize      (((((bms[0]<<16)+(bms[1]<<8)+bms[2]) - 6)<<3) - bms[3])

Uwe Schulzweida's avatar
Uwe Schulzweida committed
339
/* GRIB1 Section 4: Binary Data Section (BDS) */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
340
341
342
343
344
345
346

#define  BDS_Len	    ((int) ((bds[0]<<16)+(bds[1]<<8)+bds[2]))
#define  BDS_Flag	    (bds[3])
#define  BDS_BinScale       GET_INT2(bds[ 4], bds[ 5])
#define  BDS_RefValue       decfp2((int)bds[ 6], GET_UINT3(bds[ 7], bds[ 8], bds[ 9]))
#define  BDS_NumBits        ((int) bds[10])
#define  BDS_RealCoef       decfp2((int)bds[zoff+11], GET_UINT3(bds[zoff+12], bds[zoff+13], bds[zoff+14]))
Uwe Schulzweida's avatar
Uwe Schulzweida committed
347
348
#define  BDS_PackData       ((int) ((bds[zoff+11]<<8) + bds[zoff+12]))
#define  BDS_Power          GET_INT2(bds[zoff+13], bds[zoff+14])
Uwe Schulzweida's avatar
Uwe Schulzweida committed
349
350
#define  BDS_Z              (bds[13])

Uwe Schulzweida's avatar
Uwe Schulzweida committed
351
352
353
354
355
356
/* GRIB1 Section 5: End Section (ES) */

/* GRIB2 */

#define  GRIB2_SECLEN(section)   (GET_UINT4(section[0], section[1], section[2], section[3]))
#define  GRIB2_SECNUM(section)   (GET_UINT1(section[4]))
Uwe Schulzweida's avatar
Uwe Schulzweida committed
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375

#endif  /* _GRIBDECODE_H */
#ifndef _GRIBENCODE_H
#define _GRIBENCODE_H


#define PutnZero(n) \
{ \
  int i; \
  for ( i = z; i < z+n; i++ ) lGrib[i] = 0; \
  z += n; \
}

#define Put1Byte(Value)  (lGrib[z++] = (Value))
#define Put2Byte(Value) ((lGrib[z++] = (Value) >>  8), \
                         (lGrib[z++] = (Value)))
#define Put3Byte(Value) ((lGrib[z++] = (Value) >> 16), \
                         (lGrib[z++] = (Value) >>  8), \
                         (lGrib[z++] = (Value)))
Uwe Schulzweida's avatar
Uwe Schulzweida committed
376
377
378
379
#define Put4Byte(Value) ((lGrib[z++] = (Value) >> 24), \
                         (lGrib[z++] = (Value) >> 16), \
                         (lGrib[z++] = (Value) >>  8), \
                         (lGrib[z++] = (Value)))
Uwe Schulzweida's avatar
Uwe Schulzweida committed
380

Uwe Schulzweida's avatar
Uwe Schulzweida committed
381
382
383
#define Put1Int(Value)  {ival = Value; if ( ival < 0 ) ival =     0x80 - ival; Put1Byte(ival);}
#define Put2Int(Value)  {ival = Value; if ( ival < 0 ) ival =   0x8000 - ival; Put2Byte(ival);}
#define Put3Int(Value)  {ival = Value; if ( ival < 0 ) ival = 0x800000 - ival; Put3Byte(ival);}
Uwe Schulzweida's avatar
Uwe Schulzweida committed
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661

#define Put1Real(Value)          \
{                                \
  confp3(Value, &exponent, &mantissa, BitsPerInt, 1); \
  Put1Byte(exponent);            \
  Put3Byte(mantissa);            \
}

#endif  /* _GRIBENCODE_H */


double _pow2tab[158] = {
 /* pow(2.0,  0.0) */  1.0,
 /* pow(2.0,  1.0) */  2.0,
 /* pow(2.0,  2.0) */  4.0,
 /* pow(2.0,  3.0) */  8.0,
 /* pow(2.0,  4.0) */  16.0,
 /* pow(2.0,  5.0) */  32.0,
 /* pow(2.0,  6.0) */  64.0,
 /* pow(2.0,  7.0) */  128.0,
 /* pow(2.0,  8.0) */  256.0,
 /* pow(2.0,  9.0) */  512.0,
 /* pow(2.0, 10.0) */  1024.0,
 /* pow(2.0, 11.0) */  2048.0,
 /* pow(2.0, 12.0) */  4096.0,
 /* pow(2.0, 13.0) */  8192.0,
 /* pow(2.0, 14.0) */  16384.0,
 /* pow(2.0, 15.0) */  32768.0,
 /* pow(2.0, 16.0) */  65536.0,
 /* pow(2.0, 17.0) */  131072.0,
 /* pow(2.0, 18.0) */  262144.0,
 /* pow(2.0, 19.0) */  524288.0,
 /* pow(2.0, 20.0) */  1048576.0,
 /* pow(2.0, 21.0) */  2097152.0,
 /* pow(2.0, 22.0) */  4194304.0,
 /* pow(2.0, 23.0) */  8388608.0,
 /* pow(2.0, 24.0) */  16777216.0,
 /* pow(2.0, 25.0) */  33554432.0,
 /* pow(2.0, 26.0) */  67108864.0,
 /* pow(2.0, 27.0) */  134217728.0,
 /* pow(2.0, 28.0) */  268435456.0,
 /* pow(2.0, 29.0) */  536870912.0,
 /* pow(2.0, 30.0) */  1073741824.0,
 /* pow(2.0, 31.0) */  2147483648.0,
 /* pow(2.0, 32.0) */  4294967296.0,
 /* pow(2.0, 33.0) */  8589934592.0,
 /* pow(2.0, 34.0) */  17179869184.0,
 /* pow(2.0, 35.0) */  34359738368.0,
 /* pow(2.0, 36.0) */  68719476736.0,
 /* pow(2.0, 37.0) */  137438953472.0,
 /* pow(2.0, 38.0) */  274877906944.0,
 /* pow(2.0, 39.0) */  549755813888.0,
 /* pow(2.0, 40.0) */  1099511627776.0,
 /* pow(2.0, 41.0) */  2199023255552.0,
 /* pow(2.0, 42.0) */  4398046511104.0,
 /* pow(2.0, 43.0) */  8796093022208.0,
 /* pow(2.0, 44.0) */  17592186044416.0,
 /* pow(2.0, 45.0) */  35184372088832.0,
 /* pow(2.0, 46.0) */  70368744177664.0,
 /* pow(2.0, 47.0) */  140737488355328.0,
 /* pow(2.0, 48.0) */  281474976710656.0,
 /* pow(2.0, 49.0) */  562949953421312.0,
 /* pow(2.0, 50.0) */  1125899906842624.0,
 /* pow(2.0, 51.0) */  2251799813685248.0,
 /* pow(2.0, 52.0) */  4503599627370496.0,
 /* pow(2.0, 53.0) */  9007199254740992.0,
 /* pow(2.0, 54.0) */  18014398509481984.0,
 /* pow(2.0, 55.0) */  36028797018963968.0,
 /* pow(2.0, 56.0) */  72057594037927936.0,
 /* pow(2.0, 57.0) */  144115188075855872.0,
 /* pow(2.0, 58.0) */  288230376151711744.0,
 /* pow(2.0, 59.0) */  576460752303423488.0,
 /* pow(2.0, 60.0) */  1152921504606846976.0,
 /* pow(2.0, 61.0) */  2305843009213693952.0,
 /* pow(2.0, 62.0) */  4611686018427387904.0,
 /* pow(2.0, 63.0) */  9223372036854775808.0,
 /* pow(2.0, 64.0) */  18446744073709551616.0,
 /* pow(2.0, 65.0) */  36893488147419103232.0,
 /* pow(2.0, 66.0) */  73786976294838206464.0,
 /* pow(2.0, 67.0) */  147573952589676412928.0,
 /* pow(2.0, 68.0) */  295147905179352825856.0,
 /* pow(2.0, 69.0) */  590295810358705651712.0,
 /* pow(2.0, 70.0) */  1180591620717411303424.0,
 /* pow(2.0, 71.0) */  2361183241434822606848.0,
 /* pow(2.0, 72.0) */  4722366482869645213696.0,
 /* pow(2.0, 73.0) */  9444732965739290427392.0,
 /* pow(2.0, 74.0) */  18889465931478580854784.0,
 /* pow(2.0, 75.0) */  37778931862957161709568.0,
 /* pow(2.0, 76.0) */  75557863725914323419136.0,
 /* pow(2.0, 77.0) */  151115727451828646838272.0,
 /* pow(2.0, 78.0) */  302231454903657293676544.0,
 /* pow(2.0, 79.0) */  604462909807314587353088.0,
 /* pow(2.0, 80.0) */  1208925819614629174706176.0,
 /* pow(2.0, 81.0) */  2417851639229258349412352.0,
 /* pow(2.0, 82.0) */  4835703278458516698824704.0,
 /* pow(2.0, 83.0) */  9671406556917033397649408.0,
 /* pow(2.0, 84.0) */  19342813113834066795298816.0,
 /* pow(2.0, 85.0) */  38685626227668133590597632.0,
 /* pow(2.0, 86.0) */  77371252455336267181195264.0,
 /* pow(2.0, 87.0) */  154742504910672534362390528.0,
 /* pow(2.0, 88.0) */  309485009821345068724781056.0,
 /* pow(2.0, 89.0) */  618970019642690137449562112.0,
 /* pow(2.0, 90.0) */  1237940039285380274899124224.0,
 /* pow(2.0, 91.0) */  2475880078570760549798248448.0,
 /* pow(2.0, 92.0) */  4951760157141521099596496896.0,
 /* pow(2.0, 93.0) */  9903520314283042199192993792.0,
 /* pow(2.0, 94.0) */  19807040628566084398385987584.0,
 /* pow(2.0, 95.0) */  39614081257132168796771975168.0,
 /* pow(2.0, 96.0) */  79228162514264337593543950336.0,
 /* pow(2.0, 97.0) */  158456325028528675187087900672.0,
 /* pow(2.0, 98.0) */  316912650057057350374175801344.0,
 /* pow(2.0, 99.0) */  633825300114114700748351602688.0,
 /* pow(2.0, 100.0) */  1267650600228229401496703205376.0,
 /* pow(2.0, 101.0) */  2535301200456458802993406410752.0,
 /* pow(2.0, 102.0) */  5070602400912917605986812821504.0,
 /* pow(2.0, 103.0) */  10141204801825835211973625643008.0,
 /* pow(2.0, 104.0) */  20282409603651670423947251286016.0,
 /* pow(2.0, 105.0) */  40564819207303340847894502572032.0,
 /* pow(2.0, 106.0) */  81129638414606681695789005144064.0,
 /* pow(2.0, 107.0) */  162259276829213363391578010288128.0,
 /* pow(2.0, 108.0) */  324518553658426726783156020576256.0,
 /* pow(2.0, 109.0) */  649037107316853453566312041152512.0,
 /* pow(2.0, 110.0) */  1298074214633706907132624082305024.0,
 /* pow(2.0, 111.0) */  2596148429267413814265248164610048.0,
 /* pow(2.0, 112.0) */  5192296858534827628530496329220096.0,
 /* pow(2.0, 113.0) */  10384593717069655257060992658440192.0,
 /* pow(2.0, 114.0) */  20769187434139310514121985316880384.0,
 /* pow(2.0, 115.0) */  41538374868278621028243970633760768.0,
 /* pow(2.0, 116.0) */  83076749736557242056487941267521536.0,
 /* pow(2.0, 117.0) */  166153499473114484112975882535043072.0,
 /* pow(2.0, 118.0) */  332306998946228968225951765070086144.0,
 /* pow(2.0, 119.0) */  664613997892457936451903530140172288.0,
 /* pow(2.0, 120.0) */  1329227995784915872903807060280344576.0,
 /* pow(2.0, 121.0) */  2658455991569831745807614120560689152.0,
 /* pow(2.0, 122.0) */  5316911983139663491615228241121378304.0,
 /* pow(2.0, 123.0) */  10633823966279326983230456482242756608.0,
 /* pow(2.0, 124.0) */  21267647932558653966460912964485513216.0,
 /* pow(2.0, 125.0) */  42535295865117307932921825928971026432.0,
 /* pow(2.0, 126.0) */  85070591730234615865843651857942052864.0,
 /* pow(2.0, 127.0) */  170141183460469231731687303715884105728.0,
 /* pow(2.0, 128.0) */  340282366920938463463374607431768211456.0,
 /* pow(2.0, 129.0) */  680564733841876926926749214863536422912.0,
 /* pow(2.0, 130.0) */  1361129467683753853853498429727072845824.0,
 /* pow(2.0, 131.0) */  2722258935367507707706996859454145691648.0,
 /* pow(2.0, 132.0) */  5444517870735015415413993718908291383296.0,
 /* pow(2.0, 133.0) */  10889035741470030830827987437816582766592.0,
 /* pow(2.0, 134.0) */  21778071482940061661655974875633165533184.0,
 /* pow(2.0, 135.0) */  43556142965880123323311949751266331066368.0,
 /* pow(2.0, 136.0) */  87112285931760246646623899502532662132736.0,
 /* pow(2.0, 137.0) */  174224571863520493293247799005065324265472.0,
 /* pow(2.0, 138.0) */  348449143727040986586495598010130648530944.0,
 /* pow(2.0, 139.0) */  696898287454081973172991196020261297061888.0,
 /* pow(2.0, 140.0) */  1393796574908163946345982392040522594123776.0,
 /* pow(2.0, 141.0) */  2787593149816327892691964784081045188247552.0,
 /* pow(2.0, 142.0) */  5575186299632655785383929568162090376495104.0,
 /* pow(2.0, 143.0) */  11150372599265311570767859136324180752990208.0,
 /* pow(2.0, 144.0) */  22300745198530623141535718272648361505980416.0,
 /* pow(2.0, 145.0) */  44601490397061246283071436545296723011960832.0,
 /* pow(2.0, 146.0) */  89202980794122492566142873090593446023921664.0,
 /* pow(2.0, 147.0) */  178405961588244985132285746181186892047843328.0,
 /* pow(2.0, 148.0) */  356811923176489970264571492362373784095686656.0,
 /* pow(2.0, 149.0) */  713623846352979940529142984724747568191373312.0,
 /* pow(2.0, 150.0) */  1427247692705959881058285969449495136382746624.0,
 /* pow(2.0, 151.0) */  2854495385411919762116571938898990272765493248.0,
 /* pow(2.0, 152.0) */  5708990770823839524233143877797980545530986496.0,
 /* pow(2.0, 153.0) */  11417981541647679048466287755595961091061972992.0,
 /* pow(2.0, 154.0) */  22835963083295358096932575511191922182123945984.0,
 /* pow(2.0, 155.0) */  45671926166590716193865151022383844364247891968.0,
 /* pow(2.0, 156.0) */  91343852333181432387730302044767688728495783936.0,
 /* pow(2.0, 157.0) */  182687704666362864775460604089535377456991567872.0,
};


double _pow16tab[71] = {
 /* pow(16.0,  0.0) */  1.0,
 /* pow(16.0,  1.0) */  16.0,
 /* pow(16.0,  2.0) */  256.0,
 /* pow(16.0,  3.0) */  4096.0,
 /* pow(16.0,  4.0) */  65536.0,
 /* pow(16.0,  5.0) */  1048576.0,
 /* pow(16.0,  6.0) */  16777216.0,
 /* pow(16.0,  7.0) */  268435456.0,
 /* pow(16.0,  8.0) */  4294967296.0,
 /* pow(16.0,  9.0) */  68719476736.0,
 /* pow(16.0, 10.0) */  1099511627776.0,
 /* pow(16.0, 11.0) */  17592186044416.0,
 /* pow(16.0, 12.0) */  281474976710656.0,
 /* pow(16.0, 13.0) */  4503599627370496.0,
 /* pow(16.0, 14.0) */  72057594037927936.0,
 /* pow(16.0, 15.0) */  1152921504606846976.0,
 /* pow(16.0, 16.0) */  18446744073709551616.0,
 /* pow(16.0, 17.0) */  295147905179352825856.0,
 /* pow(16.0, 18.0) */  4722366482869645213696.0,
 /* pow(16.0, 19.0) */  75557863725914323419136.0,
 /* pow(16.0, 20.0) */  1208925819614629174706176.0,
 /* pow(16.0, 21.0) */  19342813113834066795298816.0,
 /* pow(16.0, 22.0) */  309485009821345068724781056.0,
 /* pow(16.0, 23.0) */  4951760157141521099596496896.0,
 /* pow(16.0, 24.0) */  79228162514264337593543950336.0,
 /* pow(16.0, 25.0) */  1267650600228229401496703205376.0,
 /* pow(16.0, 26.0) */  20282409603651670423947251286016.0,
 /* pow(16.0, 27.0) */  324518553658426726783156020576256.0,
 /* pow(16.0, 28.0) */  5192296858534827628530496329220096.0,
 /* pow(16.0, 29.0) */  83076749736557242056487941267521536.0,
 /* pow(16.0, 30.0) */  1329227995784915872903807060280344576.0,
 /* pow(16.0, 31.0) */  21267647932558653966460912964485513216.0,
 /* pow(16.0, 32.0) */  340282366920938463463374607431768211456.0,
 /* pow(16.0, 33.0) */  5444517870735015415413993718908291383296.0,
 /* pow(16.0, 34.0) */  87112285931760246646623899502532662132736.0,
 /* pow(16.0, 35.0) */  1393796574908163946345982392040522594123776.0,
 /* pow(16.0, 36.0) */  22300745198530623141535718272648361505980416.0,
 /* pow(16.0, 37.0) */  356811923176489970264571492362373784095686656.0,
 /* pow(16.0, 38.0) */  5708990770823839524233143877797980545530986496.0,
 /* pow(16.0, 39.0) */  91343852333181432387730302044767688728495783936.0,
 /* pow(16.0, 40.0) */  1461501637330902918203684832716283019655932542976.0,
 /* pow(16.0, 41.0) */  23384026197294446691258957323460528314494920687616.0,
 /* pow(16.0, 42.0) */  374144419156711147060143317175368453031918731001856.0,
 /* pow(16.0, 43.0) */  5986310706507378352962293074805895248510699696029696.0,
 /* pow(16.0, 44.0) */  95780971304118053647396689196894323976171195136475136.0,
 /* pow(16.0, 45.0) */  1532495540865888858358347027150309183618739122183602176.0,
 /* pow(16.0, 46.0) */  24519928653854221733733552434404946937899825954937634816.0,
 /* pow(16.0, 47.0) */  392318858461667547739736838950479151006397215279002157056.0,
 /* pow(16.0, 48.0) */  6277101735386680763835789423207666416102355444464034512896.0,
 /* pow(16.0, 49.0) */  100433627766186892221372630771322662657637687111424552206336.0,
 /* pow(16.0, 50.0) */  1606938044258990275541962092341162602522202993782792835301376.0,
 /* pow(16.0, 51.0) */  25711008708143844408671393477458601640355247900524685364822016.0,
 /* pow(16.0, 52.0) */  411376139330301510538742295639337626245683966408394965837152256.0,
 /* pow(16.0, 53.0) */  6582018229284824168619876730229402019930943462534319453394436096.0,
 /* pow(16.0, 54.0) */  105312291668557186697918027683670432318895095400549111254310977536.0,
 /* pow(16.0, 55.0) */  1684996666696914987166688442938726917102321526408785780068975640576.0,
 /* pow(16.0, 56.0) */  26959946667150639794667015087019630673637144422540572481103610249216.0,
 /* pow(16.0, 57.0) */  431359146674410236714672241392314090778194310760649159697657763987456.0,
 /* pow(16.0, 58.0) */  6901746346790563787434755862277025452451108972170386555162524223799296.0,
 /* pow(16.0, 59.0) */  110427941548649020598956093796432407239217743554726184882600387580788736.0,
 /* pow(16.0, 60.0) */  1766847064778384329583297500742918515827483896875618958121606201292619776.0,
 /* pow(16.0, 61.0) */  28269553036454149273332760011886696253239742350009903329945699220681916416.0,
 /* pow(16.0, 62.0) */  452312848583266388373324160190187140051835877600158453279131187530910662656.0,
 /* pow(16.0, 63.0) */  7237005577332262213973186563042994240829374041602535252466099000494570602496.0,
 /* pow(16.0, 64.0) */  115792089237316195423570985008687907853269984665640564039457584007913129639936.0,
 /* pow(16.0, 65.0) */  1852673427797059126777135760139006525652319754650249024631321344126610074238976.0,
 /* pow(16.0, 66.0) */  29642774844752946028434172162224104410437116074403984394101141506025761187823616.0,
 /* pow(16.0, 67.0) */  474284397516047136454946754595585670566993857190463750305618264096412179005177856.0,
 /* pow(16.0, 68.0) */  7588550360256754183279148073529370729071901715047420004889892225542594864082845696.0,
 /* pow(16.0, 69.0) */  121416805764108066932466369176469931665150427440758720078238275608681517825325531136.0,
 /* pow(16.0, 70.0) */  1942668892225729070919461906823518906642406839052139521251812409738904285205208498176.0,
};

static int _pow2tab_size = sizeof(_pow2tab)/sizeof(double);

void gen_pow2tab(void)
{
  int jloop;

  for ( jloop = 0; jloop < 158; jloop++ )
    printf(" /* pow(2.0, %2d.0) */  %.1f,\n", jloop,  pow(2.0, (double) jloop));
}


void gen_pow16tab(void)
{
  double pval;
  int iexp;

  for ( iexp = 0; iexp < 71; iexp++ )
    {
      pval = pow(16.0, (double)(iexp));
      printf(" /* pow(16.0, %2d.0) */  %.1f,\n", iexp, pval);
    }
}


double intpow2(int x)
{
  if ( x < _pow2tab_size )
    return (_pow2tab[x]);
  else
    return (pow(2.0, (double) x));
}
Uwe Schulzweida's avatar
Uwe Schulzweida committed
662
663
664
665
666
//#undef _GET_X86_COUNTER
//#undef _GET_IBM_COUNTER
//#undef _ARCH_PWR6
//#undef __AVX__
//#undef __SSE2__
Uwe Schulzweida's avatar
Uwe Schulzweida committed
667

Uwe Schulzweida's avatar
Uwe Schulzweida committed
668
669
670
671
672
673
674
675
676
677
678
679
#ifdef _GET_IBM_COUNTER
#endif

#ifdef __AVX__
#ifdef _GET_X86_COUNTER
#endif
#else
#ifdef __SSE2__
#ifdef _GET_X86_COUNTER
#endif
#endif
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
680
681


Uwe Schulzweida's avatar
Uwe Schulzweida committed
682
683
684
#ifdef __AVX__
static
void avx_minmax_val(const double *restrict buf, long nframes, double *min, double *max)
Uwe Schulzweida's avatar
Uwe Schulzweida committed
685
{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
686
  __m256d current_max, current_min, work;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
687

Uwe Schulzweida's avatar
Uwe Schulzweida committed
688
689
690
  // load max and min values into all four slots of the XMM registers
  current_min = _mm256_set1_pd(*min);
  current_max = _mm256_set1_pd(*max);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
691

Uwe Schulzweida's avatar
Uwe Schulzweida committed
692
693
  // Work input until "buf" reaches 32 byte alignment
  while ( ((unsigned long)buf) % 32 != 0 && nframes > 0) {
Uwe Schulzweida's avatar
Uwe Schulzweida committed
694

Uwe Schulzweida's avatar
Uwe Schulzweida committed
695
696
697
698
699
700
701
    // Load the next double into the work buffer
    work = _mm256_set1_pd(*buf);
    current_min = _mm256_min_pd(current_min, work);
    current_max = _mm256_max_pd(current_max, work);
    buf++;
    nframes--;
  }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
702

Uwe Schulzweida's avatar
Uwe Schulzweida committed
703
704
705
  while (nframes >= 16) {
    // use 64 byte prefetch?
    __builtin_prefetch(buf+64,0,0); // for GCC 4.3.2+
Uwe Schulzweida's avatar
Uwe Schulzweida committed
706

Uwe Schulzweida's avatar
Uwe Schulzweida committed
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
    work = _mm256_load_pd(buf);
    current_min = _mm256_min_pd(current_min, work);
    current_max = _mm256_max_pd(current_max, work);
    buf += 4;
    __builtin_prefetch(buf+64,0,0); // for GCC 4.3.2+
    work = _mm256_load_pd(buf);
    current_min = _mm256_min_pd(current_min, work);
    current_max = _mm256_max_pd(current_max, work);
    buf += 4;
    __builtin_prefetch(buf+64,0,0); // for GCC 4.3.2+
    work = _mm256_load_pd(buf);
    current_min = _mm256_min_pd(current_min, work);
    current_max = _mm256_max_pd(current_max, work);
    buf += 4;
    __builtin_prefetch(buf+64,0,0); // for GCC 4.3.2+
    work = _mm256_load_pd(buf);
    current_min = _mm256_min_pd(current_min, work);
    current_max = _mm256_max_pd(current_max, work);
    buf += 4;
    nframes -= 16;
  }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
728

Uwe Schulzweida's avatar
Uwe Schulzweida committed
729
730
731
732
733
734
735
736
  // work through aligned buffers
  while (nframes >= 4) {
    work = _mm256_load_pd(buf);
    current_min = _mm256_min_pd(current_min, work);
    current_max = _mm256_max_pd(current_max, work);
    buf += 4;
    nframes -= 4;
  }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
737

Uwe Schulzweida's avatar
Uwe Schulzweida committed
738
739
740
741
742
743
744
745
  // work through the remainung values
  while ( nframes > 0) {
    work = _mm256_set1_pd(*buf);
    current_min = _mm256_min_pd(current_min, work);
    current_max = _mm256_max_pd(current_max, work);
    buf++;
    nframes--;
  }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
746

Uwe Schulzweida's avatar
Uwe Schulzweida committed
747
  // find min & max value through shuffle tricks
Uwe Schulzweida's avatar
Uwe Schulzweida committed
748

Uwe Schulzweida's avatar
Uwe Schulzweida committed
749
750
751
752
753
754
755
756
757
758
759
760
761
762
  work = current_min;
  work = _mm256_shuffle_pd(work, work, _MM_SHUFFLE(2, 3, 0, 1));
  work = _mm256_min_pd (work, current_min);
  current_min = work;
  work = _mm256_shuffle_pd(work, work, _MM_SHUFFLE(1, 0, 3, 2));
  work = _mm256_min_pd (work, current_min);
  _mm256_store_pd(min, work);
  work = current_max;
  work = _mm256_shuffle_pd(work, work, _MM_SHUFFLE(2, 3, 0, 1));
  work = _mm256_max_pd (work, current_max);
  current_max = work;
  work = _mm256_shuffle_pd(work, work, _MM_SHUFFLE(1, 0, 3, 2));
  work = _mm256_max_pd (work, current_max);
  _mm256_store_pd(max, work);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
763

Uwe Schulzweida's avatar
Uwe Schulzweida committed
764
765
  return;
}
Uwe Schulzweida's avatar
Uwe Schulzweida committed
766

Uwe Schulzweida's avatar
Uwe Schulzweida committed
767
#else
Uwe Schulzweida's avatar
Uwe Schulzweida committed
768

Uwe Schulzweida's avatar
Uwe Schulzweida committed
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
#ifdef __SSE2__
static
void sse2_minmax_val(const double *restrict buf, long nframes, double *min, double *max)
{
  __m128d current_max, current_min, work;
  
  // load starting max and min values into all slots of the XMM registers
  current_min = _mm_set1_pd(*min);
  current_max = _mm_set1_pd(*max);
  
  // work on input until buf reaches 16 byte alignment
  while ( ((unsigned long)buf) % 16 != 0 && nframes > 0) {
    
    // load one double and replicate
    work = _mm_set1_pd(*buf);    
    current_min = _mm_min_pd(current_min, work);
    current_max = _mm_max_pd(current_max, work);    
    buf++;
    nframes--;
  }
  
  while (nframes >= 8) {
    // use 64 byte prefetch for double octetts
    __builtin_prefetch(buf+64,0,0); // for GCC 4.3.2 +
Uwe Schulzweida's avatar
Uwe Schulzweida committed
793

Uwe Schulzweida's avatar
Uwe Schulzweida committed
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
    work = _mm_load_pd(buf);
    current_min = _mm_min_pd(current_min, work);
    current_max = _mm_max_pd(current_max, work);
    buf += 2;
    work = _mm_load_pd(buf);
    current_min = _mm_min_pd(current_min, work);
    current_max = _mm_max_pd(current_max, work);
    buf += 2;
    work = _mm_load_pd(buf);
    current_min = _mm_min_pd(current_min, work);
    current_max = _mm_max_pd(current_max, work);
    buf += 2;
    work = _mm_load_pd(buf);
    current_min = _mm_min_pd(current_min, work);
    current_max = _mm_max_pd(current_max, work);
    buf += 2;
    nframes -= 8;
  }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
812

Uwe Schulzweida's avatar
Uwe Schulzweida committed
813
814
815
816
817
818
819
820
  // work through smaller chunks of aligned buffers without prefetching
  while (nframes >= 2) {
    work = _mm_load_pd(buf);
    current_min = _mm_min_pd(current_min, work);
    current_max = _mm_max_pd(current_max, work);
    buf += 2;
    nframes -= 2;
  }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
821

Uwe Schulzweida's avatar
Uwe Schulzweida committed
822
823
824
825
826
827
828
829
830
  // work through the remaining value
  while ( nframes > 0) {
    // load the last double and replicate
    work = _mm_set1_pd(*buf);
    current_min = _mm_min_pd(current_min, work);
    current_max = _mm_max_pd(current_max, work);
    buf++;
    nframes--;
  }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
831

Uwe Schulzweida's avatar
Uwe Schulzweida committed
832
833
834
835
836
837
838
839
840
  // find final min and max value through shuffle tricks
  work = current_min;
  work = _mm_shuffle_pd(work, work, _MM_SHUFFLE2(0, 1));
  work = _mm_min_pd (work, current_min);
  _mm_store_sd(min, work);
  work = current_max;
  work = _mm_shuffle_pd(work, work, _MM_SHUFFLE2(0, 1));
  work = _mm_max_pd (work, current_max);
  _mm_store_sd(max, work);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
841

Uwe Schulzweida's avatar
Uwe Schulzweida committed
842
843
844
  return;
}
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
845

Uwe Schulzweida's avatar
Uwe Schulzweida committed
846
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
847

Uwe Schulzweida's avatar
Uwe Schulzweida committed
848
static
Uwe Schulzweida's avatar
Uwe Schulzweida committed
849
850
851
852
853
void minmax_val(const double *restrict data, long datasize, double *fmin, double *fmax)
{
#ifdef _GET_X86_COUNTER 
  uint64_t start_minmax, end_minmax;
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
854

Uwe Schulzweida's avatar
Uwe Schulzweida committed
855
  if ( datasize < 1 ) return;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
856

Uwe Schulzweida's avatar
Uwe Schulzweida committed
857
858
859
#ifdef _GET_X86_COUNTER 
  start_minmax = _rdtsc();
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
860

Uwe Schulzweida's avatar
Uwe Schulzweida committed
861
#ifdef __AVX__
Uwe Schulzweida's avatar
Uwe Schulzweida committed
862

Uwe Schulzweida's avatar
Uwe Schulzweida committed
863
  avx_minmax_val(data, datasize, fmin, fmax);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
864

Uwe Schulzweida's avatar
Uwe Schulzweida committed
865
#else
Uwe Schulzweida's avatar
Uwe Schulzweida committed
866
867


Uwe Schulzweida's avatar
Uwe Schulzweida committed
868
#ifdef __SSE2__
Uwe Schulzweida's avatar
Uwe Schulzweida committed
869

Uwe Schulzweida's avatar
Uwe Schulzweida committed
870
  sse2_minmax_val(data, datasize, fmin, fmax);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
871

Uwe Schulzweida's avatar
Uwe Schulzweida committed
872
#else
Uwe Schulzweida's avatar
Uwe Schulzweida committed
873

Uwe Schulzweida's avatar
Uwe Schulzweida committed
874
875
#ifdef _ARCH_PWR6
#define __UNROLL_DEPTH_1 6
Uwe Schulzweida's avatar
Uwe Schulzweida committed
876

Uwe Schulzweida's avatar
Uwe Schulzweida committed
877
  // to allow pipelining we have to unroll 
Uwe Schulzweida's avatar
Uwe Schulzweida committed
878

Uwe Schulzweida's avatar
Uwe Schulzweida committed
879
880
881
882
883
884
885
886
887
#ifdef _GET_IBM_COUNTER 
  hpmStart(1, "minmax fsel");
#endif
  {
    long i, j;
    long residual =  datasize % __UNROLL_DEPTH_1;
    long ofs = datasize - residual;
    double register dmin[__UNROLL_DEPTH_1];
    double register dmax[__UNROLL_DEPTH_1];
Uwe Schulzweida's avatar
Uwe Schulzweida committed
888

Uwe Schulzweida's avatar
Uwe Schulzweida committed
889
890
891
892
893
894
895
896
897
898
899
900
901
902
    for ( j = 0; j < __UNROLL_DEPTH_1; j++) 
      {
	dmin[j] = data[0];
	dmax[j] = data[0];
      }
    
    for ( i = 0; i < datasize - residual; i += __UNROLL_DEPTH_1 ) 
      {
	for (j = 0; j < __UNROLL_DEPTH_1; j++) 
	  {
	    dmin[j] = __fsel(dmin[j] - data[i+j], data[i+j], dmin[j]);
	    dmax[j] = __fsel(data[i+j] - dmax[j], data[i+j], dmax[j]);
	  }
      }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
903

Uwe Schulzweida's avatar
Uwe Schulzweida committed
904
905
906
907
908
    for (j = 0; j < residual; j++) 
      {
	dmin[j] = __fsel(dmin[j] - data[ofs+j], data[ofs+j], dmin[j]);
	dmax[j] = __fsel(data[ofs+j] - dmax[j], data[ofs+j], dmax[j]);
      }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
909

Uwe Schulzweida's avatar
Uwe Schulzweida committed
910
911
912
913
914
915
916
917
918
    for ( j = 0; j < __UNROLL_DEPTH_1; j++) 
      {
	*fmin = __fsel(*fmin - dmin[j], dmin[j], *fmin);
	*fmax = __fsel(dmax[j] - *fmax, dmax[j], *fmax);
      }
  }
#ifdef _GET_IBM_COUNTER 
  hpmStop(1);
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
919

Uwe Schulzweida's avatar
Uwe Schulzweida committed
920
921
#undef __UNROLL_DEPTH_1
#else
Uwe Schulzweida's avatar
Uwe Schulzweida committed
922

Uwe Schulzweida's avatar
Uwe Schulzweida committed
923
924
925
926
927
#ifdef _GET_IBM_COUNTER 
  hpmStart(1, "minmax base");
#endif
  {
    long i;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
928

Uwe Schulzweida's avatar
Uwe Schulzweida committed
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
#if   defined (CRAY)
#pragma _CRI ivdep
#elif defined (SX)
#pragma vdir nodep
#elif defined (__uxp__)
#pragma loop novrec
#endif
    for ( i = 0; i < datasize; ++i )
      {
	if ( *fmin > data[i] ) *fmin = data[i];
	if ( *fmax < data[i] ) *fmax = data[i];
	/*
	 *fmin = *fmin < data[i] ? *fmin : data[i];
	 *fmax = *fmax > data[i] ? *fmax : data[i];
	 */
      }
  }
#ifdef _GET_IBM_COUNTER 
  hpmStop(1);
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
949

Uwe Schulzweida's avatar
Uwe Schulzweida committed
950
951
952
#endif
#endif
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
953

Uwe Schulzweida's avatar
Uwe Schulzweida committed
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
#ifdef _GET_X86_COUNTER 
  end_minmax = _rdtsc();
#ifdef __AVX__
  printf("AVX cycles:: %" PRIu64 "\n", 
	 end_minmax-start_minmax);
#else
#ifdef __SSE2__
  printf("SSE2 cycles:: %" PRIu64 "\n", 
	 end_minmax-start_minmax);
#else
  printf("loop cycles:: %" PRIu64 "\n", 
	 end_minmax-start_minmax);
#endif  
#endif
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
969

Uwe Schulzweida's avatar
Uwe Schulzweida committed
970
971
972
  return;
}
//#undef _GET_IBM_COUNTER
Uwe Schulzweida's avatar
Uwe Schulzweida committed
973
974


Uwe Schulzweida's avatar
Uwe Schulzweida committed
975
976
#ifdef _GET_IBM_COUNTER
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
977

Uwe Schulzweida's avatar
Uwe Schulzweida committed
978
979
980
981
982
983
984
985
986
987
988
989
 
static
void encode_double_array_common(int numBits, long packStart, long datasize, GRIBPACK *lGrib,
				const double *data, double zref, double factor, long *gz)
{
  long i, z = *gz;
  unsigned int ival;
  int cbits, jbits;
  unsigned int c;
  static unsigned int mask[] = {0,1,3,7,15,31,63,127,255};
    
  /* code from gribw routine flist2bitstream */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
990

Uwe Schulzweida's avatar
Uwe Schulzweida committed
991
992
993
994
995
996
997
998
999
1000
1001
1002
  cbits = 8;
  c = 0;
  for ( i = packStart; i < datasize; i++ )
    {
      /* note float -> unsigned int .. truncate */
      ival = (unsigned int) ((data[i] - zref) * factor + 0.5);
      /*
	if ( ival > max_nbpv_pow2 ) ival = max_nbpv_pow2;
	if ( ival < 0 ) ival = 0;
      */
      jbits = numBits;
      while ( cbits <= jbits ) 
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1003
	{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1004
1005
1006
1007
1008
	  if ( cbits == 8 )
	    {
	      jbits -= 8;
	      lGrib[z++] = (ival >> jbits) & 0xFF;
	    }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1009
	  else
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1010
1011
1012
1013
1014
1015
	    {
	      jbits -= cbits;
	      lGrib[z++] = (c << cbits) + ((ival >> jbits) & mask[cbits]);
	      cbits = 8;
	      c = 0;
	    }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1016
	}
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1017
1018
      /* now jbits < cbits */
      if ( jbits )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1019
	{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1020
1021
	  c = (c << jbits) + (ival & mask[jbits]);
	  cbits -= jbits;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1022
1023
	}
    }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1024
  if ( cbits != 8 ) lGrib[z++] = c << cbits;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1025

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1026
1027
  *gz = z;
}
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1028

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1029
static
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1030
1031
1032
1033
1034
1035
1036
1037
void encode_double_array_byte(int numBits, long packStart, long datasize, 
			      GRIBPACK *restrict lGrib,
			      const double *restrict data, 
			      double zref, double factor, long *restrict gz)
{
  long i, z = *gz;
  unsigned long ival;
  double tmp;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1038

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1039
1040
  data += packStart;
  datasize -= packStart;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1041

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1042
  if      ( numBits ==  8 )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1043
    {
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
#ifdef _GET_IBM_COUNTER 
      hpmStart(2, "pack 8 bit base");
#endif
#if   defined (CRAY)
#pragma _CRI ivdep
#elif defined (SX)
#pragma vdir nodep
#elif defined (__uxp__)
#pragma loop novrec
#endif
      for ( i = 0; i < datasize; i++ )
	{
	  tmp = ((data[i] - zref) * factor + 0.5);
          ival = (unsigned long) tmp;
	  lGrib[z  ] = ival;
          z++;
	}
#ifdef _GET_IBM_COUNTER 
      hpmStop(2);
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1064
    }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1065
  else if ( numBits == 16 )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1066
    {
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
#ifdef _GET_IBM_COUNTER 
      hpmStart(3, "pack 16 bit base");
#endif
#if   defined (CRAY)
#pragma _CRI ivdep
#elif defined (SX)
#pragma vdir nodep
#elif defined (__uxp__)
#pragma loop novrec
#endif
      for ( i = 0; i < datasize; i++ )
      	{
      	  tmp = ((data[i] - zref) * factor + 0.5);
          ival = (unsigned long) tmp;
          lGrib[z  ] = ival >>  8;
          lGrib[z+1] = ival;
          z += 2;
      	}
#ifdef _GET_IBM_COUNTER 
      hpmStop(3);
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1088
    }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1089
  else if ( numBits == 24 )
1090
    {
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
#ifdef _GET_IBM_COUNTER 
      hpmStart(4, "pack 24 bit base");
#endif
#if   defined (CRAY)
#pragma _CRI ivdep
#elif defined (SX)
#pragma vdir nodep
#elif defined (__uxp__)
#pragma loop novrec
#endif
      for ( i = 0; i < datasize; i++ )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1102
	{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1103
1104
1105
1106
1107
1108
	  tmp = ((data[i] - zref) * factor + 0.5);
          ival = (unsigned long) tmp;
          lGrib[z  ] =  ival >> 16;
          lGrib[z+1] =  ival >>  8;
          lGrib[z+2] =  ival;
          z += 3;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1109
	}
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
#ifdef _GET_IBM_COUNTER 
      hpmStop(4);
#endif
    }
  else if ( numBits == 32 )
    {
#ifdef _GET_IBM_COUNTER 
      hpmStart(5, "pack 32 bit base");
#endif
#if   defined (CRAY)
#pragma _CRI ivdep
#elif defined (SX)
#pragma vdir nodep
#elif defined (__uxp__)
#pragma loop novrec
#endif
      for ( i = 0; i < datasize; i++ )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1127
	{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1128
1129
1130
1131
1132
1133
1134
	  tmp = ((data[i] - zref) * factor + 0.5);
          ival = (unsigned long) tmp;
          lGrib[z  ] =  ival >> 24;
          lGrib[z+1] =  ival >> 16;
          lGrib[z+2] =  ival >>  8;
          lGrib[z+3] =  ival;
          z += 4;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1135
	}
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
#ifdef _GET_IBM_COUNTER 
      hpmStop(5);
#endif
    }
  else if ( numBits > 0 && numBits <= 32 )
    {
      encode_double_array_common(numBits, 0, datasize, lGrib, 
				 data, zref, factor, &z);
    }
  else if ( numBits == 0 )
    {
    }
  else
    {
      Error("Unimplemented packing factor %d!", numBits);
1151
    }
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1152

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1153
  *gz = z;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1154
1155
}

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1156
static
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1157
1158
1159
1160
void encode_double_array_unrolled(int numBits, long packStart, long datasize, 
				  GRIBPACK *restrict lGrib,
				  const double *restrict data, 
				  double zref, double factor, long *restrict gz)
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1161
{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1162
1163
1164
1165
1166
1167
1168
1169
  U_BYTEORDER;
  long i, j, z = *gz;
  double tmp;
#ifdef _ARCH_PWR6
#define __UNROLL_DEPTH_2 8
#else
#define __UNROLL_DEPTH_2 8
#endif
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1170

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1171
1172
  data += packStart;
  datasize -= packStart;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1173

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1174
1175
1176
1177
1178
  {
    long residual =  datasize % __UNROLL_DEPTH_2;
    long ofs = datasize - residual;
    double dval[__UNROLL_DEPTH_2];
    unsigned long ival;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1179

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1180
    // reducing FP operations to single FMA is slowing down on pwr6 ...
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1181

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
    if      ( numBits ==  8 )
      {
	unsigned char *cgrib = (unsigned char *) (lGrib + z);
#ifdef _GET_IBM_COUNTER 
	hpmStart(2, "pack 8 bit unrolled");
#endif
	for ( i = 0; i < datasize - residual; i += __UNROLL_DEPTH_2 ) 
	  {
	    for (j = 0; j < __UNROLL_DEPTH_2; j++) 
	      {
		dval[j] = ((data[i] - zref) * factor + 0.5);
	      }
	    for (j = 0; j < __UNROLL_DEPTH_2; j++) 
	      {
		*cgrib =  (unsigned long) dval[j];
		cgrib++;
		z++;
	      }
	  }
	for (j = 0; j < residual; j++) 
	  {
	    dval[j] = ((data[ofs+j] - zref) * factor + 0.5);
	  }
	for (j = 0; j < residual; j++) 
	  {
	    *cgrib = (unsigned long) dval[j];
	    cgrib++;
	    z++;
	  }
#ifdef _GET_IBM_COUNTER 
	hpmStop(2);
#endif
      }
    else if ( numBits == 16 )
      {
	unsigned short *sgrib = (unsigned short *) (lGrib + z);
#ifdef _GET_IBM_COUNTER 
	hpmStart(3, "pack 16 bit unrolled");
#endif
	for ( i = 0; i < datasize - residual; i += __UNROLL_DEPTH_2 ) 
	  {
	    for (j = 0; j < __UNROLL_DEPTH_2; j++) 
	      {
		dval[j] = ((data[i+j] - zref) * factor + 0.5);
	      }
	    if ( IS_BIGENDIAN() )
	      {
		for (j = 0; j < __UNROLL_DEPTH_2; j++) 
		  {
		    *sgrib = (unsigned long) dval[j];
		    sgrib++;
		    z += 2;
		  }
	      }
	    else
	      {
		for (j = 0; j < __UNROLL_DEPTH_2; j++) 
		  {
		    ival = (unsigned long) dval[j];
		    lGrib[z  ] = ival >>  8;
		    lGrib[z+1] = ival;
		    z += 2;
		  }
	      }
	  }
	for (j = 0; j < residual; j++) 
	  {
	    dval[j] = ((data[ofs+j] - zref) * factor + 0.5);
	  }
	if ( IS_BIGENDIAN() )
	  {
	    for (j = 0; j < residual; j++) 
	      {
		*sgrib = (unsigned long) dval[j];
		sgrib++;
		z += 2;
	      }
	  }
	else
	  {
	    for (j = 0; j < residual; j++) 
	      {
		ival = (unsigned long) dval[j];
		lGrib[z  ] = ival >>  8;
		lGrib[z+1] = ival;
		z += 2;
	      }
	  }
#ifdef _GET_IBM_COUNTER 
	hpmStop(3);
#endif
      }
    else if ( numBits == 24 )
      {
#ifdef _GET_IBM_COUNTER 
	hpmStart(4, "pack 24 bit unrolled");
#endif
	for ( i = 0; i < datasize - residual; i += __UNROLL_DEPTH_2 ) 
	  {
	    for (j = 0; j < __UNROLL_DEPTH_2; j++) 
	      {
		dval[j] = ((data[i+j] - zref) * factor + 0.5);
	      }
	    for (j = 0; j < __UNROLL_DEPTH_2; j++) 
	      {
		ival = (unsigned long) dval[j];
		lGrib[z  ] =  ival >> 16;
		lGrib[z+1] =  ival >>  8;
		lGrib[z+2] =  ival;
		z += 3;
	      }
	  }
	for (j = 0; j < residual; j++) 
	  {
	    dval[j] = ((data[ofs+j] - zref) * factor + 0.5);
	  }
	for (j = 0; j < residual; j++) 
	  {
	    ival = (unsigned long) dval[j];
	    lGrib[z  ] =  ival >> 16;
	    lGrib[z+1] =  ival >>  8;
	    lGrib[z+2] =  ival;
	    z += 3;
	  }
#ifdef _GET_IBM_COUNTER 
	hpmStop(4);
#endif
      }
    else if ( numBits == 32 )
      {
#ifdef _GET_IBM_COUNTER 
	hpmStart(5, "pack 32 bit unrolled");
#endif
	unsigned int *igrib = (unsigned int *) (lGrib + z);
	for ( i = 0; i < datasize - residual; i += __UNROLL_DEPTH_2 ) 
	  {
	    for (j = 0; j < __UNROLL_DEPTH_2; j++) 
	      {
		dval[j] = ((data[i+j] - zref) * factor + 0.5);
	      }
	    if ( IS_BIGENDIAN() )
	      {
		for (j = 0; j < __UNROLL_DEPTH_2; j++) 
		  {
		    *igrib = (unsigned long) dval[j];
		    igrib++;
		    z += 4;
		  }
	      }
	    else
	      {
		for (j = 0; j < __UNROLL_DEPTH_2; j++) 
		  {
		    ival = (unsigned long) dval[j];
		    lGrib[z  ] =  ival >> 24;
		    lGrib[z+1] =  ival >> 16;
		    lGrib[z+2] =  ival >>  8;
		    lGrib[z+3] =  ival;
		    z += 4;
		  }
	      }
	  }
	for (j = 0; j < residual; j++) 
	  {
	    dval[j] = ((data[ofs+j] - zref) * factor + 0.5);
	  }
	if ( IS_BIGENDIAN() )
	  {
	    for (j = 0; j < residual; j++) 
	      {
		*igrib = (unsigned long) dval[j];
		igrib++;
		z += 4;
	      }
	  }
	else
	  {
	    for (j = 0; j < residual; j++) 
	      {
		ival = (unsigned long) dval[j];
		lGrib[z  ] =  ival >> 24;
		lGrib[z+1] =  ival >> 16;
		lGrib[z+2] =  ival >>  8;
		lGrib[z+3] =  ival;
		z += 4;
	      }
	  }
#ifdef _GET_IBM_COUNTER 
	hpmStop(5);
#endif
      }
    else if ( numBits > 0 && numBits <= 32 )
      {
	encode_double_array_common(numBits, 0, datasize, lGrib, 
				   data, zref, factor, &z);
      }
    else if ( numBits == 0 )
      {
      }
    else
      {
	Error("Unimplemented packing factor %d!", numBits);
      }
  }

  *gz = z;
#undef __UNROLL_DEPTH_2
}

#define  NINT(x)  ((x) < 0 ? (int)((x)-.5) : (int)((x)+.5))


void confp3(double pval, int *kexp, int *kmant, int kbits, int kround)
{
  /*

    Purpose:
    --------

    Convert floating point number from machine
    representation to GRIB representation.

    Input Parameters:
    -----------------

       pval    - Floating point number to be converted.
       kbits   - Number of bits in computer word.
       kround  - Conversion type.
                 0 , Closest number in GRIB format less than
                     original number.
                 1 , Closest number in GRIB format to the
                     original number (equal to, greater than or
                     less than original number).

    Output Parameters:
    ------------------

       kexp    - 8 Bit signed exponent.
       kmant   - 24 Bit mantissa.

    Method:
    -------

    Floating point number represented as 8 bit signed
    exponent and 24 bit mantissa in integer values.

    Externals.
    ----------

    decfp2    - Decode from IBM floating point format.

    Reference:
    ----------

    WMO Manual on Codes re GRIB representation.

    Comments:
    ---------

    Routine aborts if an invalid conversion type parameter
    is used or if a 24 bit mantissa is not produced.

    Author:
    -------
     
    John Hennessy   ECMWF   18.06.91

    Modifications:
    --------------

    Uwe Schulzweida   MPIfM   01/04/2001

    Convert to C from EMOS library version 130

    Uwe Schulzweida   MPIfM   02/08/2002

     - speed up by factor 1.6 on NEC SX6
        - replace 1.0 / pow(16.0, (double)(iexp - 70)) by rpow16m70tab[iexp]
  */

  double zval, rpowref;
  double zref, zeps;
  int iexp, isign;
  int iround;
  extern int CGRIBEX_Debug;
  extern double _pow16tab[71];

  /* ----------------------------------------------------------------- */
  /*   Section 1 . Initialise                                          */
  /* ----------------------------------------------------------------- */

  /*  Check conversion type parameter. */

  iround = kround;
  if ( iround != 0 && iround != 1 )
    {
      Error("Invalid conversion type = %d", iround);

      /*  If not aborting, arbitrarily set rounding to 'up'. */
     iround = 1;
    }

  /* ----------------------------------------------------------------- */
  /*   Section 2 . Convert value of zero.                              */
  /* ----------------------------------------------------------------- */

  if ( ! (fabs(pval) > 0))
    {
      *kexp  = 0;
      *kmant = 0;
      iexp   = 0;
      isign  = 0;
      goto LABEL900;
    }

  /* ----------------------------------------------------------------- */
  /*   Section 3 . Convert other values.                               */
  /* ----------------------------------------------------------------- */

  zeps = 1.0e-12;
  if ( kbits == 32 ) zeps = 1.0e-8;
  zref = pval;

  /*  Sign of value. */

  isign = 0;
  if ( zref < 0.0 )
    {
      isign = 128;
      zref  = - zref;
    }

  /*  Exponent. */

  iexp = (int) (log(zref)/log(16.0) + 65.0 + zeps);

  /* only ANSI C99 has log2 */
  /* iexp = (int) (log2(zref) * 0.25 + 65.0 + zeps); */

  if ( iexp < 0   ) iexp = 0;
  if ( iexp > 127 ) iexp = 127;

  /*
  rpowref = zref / pow(16.0, (double)(iexp - 70));
  */

  if ( (iexp - 70) < 0 )
    rpowref = zref * _pow16tab[-(iexp - 70)];
  else
    rpowref = zref / _pow16tab[(iexp - 70)];

  /*  Mantissa. */

  if ( iround == 0 )
    {
      /*  Closest number in GRIB format less than original number. */
      /*  Truncate for positive numbers. */
      /*  Round up for negative numbers. */

      if ( isign == 0 )
	*kmant = (int) rpowref;
      else
	*kmant = NINT(rpowref + 0.5);
    }
  else
    {
      /*  Closest number in GRIB format to the original number   */
      /*  (equal to, greater than or less than original number). */

      *kmant = NINT(rpowref);
    }

  /*  Check that mantissa value does not exceed 24 bits. */
  /*  If it does, adjust the exponent upwards and recalculate */
  /*  the mantissa. */
  /*  16777215 = 2**24 - 1 */

  if ( *kmant > 16777215 )
    {

    LABEL350:

      ++iexp;

      /*  Check for exponent overflow during adjustment  */

      if ( iexp > 127 )
	{
          Message("Exponent overflow");
          Message("Original number = %30.20f", pval);
          Message("Sign = %3d, Exponent = %3d, Mantissa = %12d",
		  isign, iexp, *kmant);

	  Error("Exponent overflow");

	  /*  If not aborting, arbitrarily set value to zero  */

          Message("Value arbitrarily set to zero.");
          *kexp  = 0;
          *kmant = 0;
          iexp  = 0;
          isign = 0;
          goto LABEL900;
	}

      if ( (iexp - 70) < 0 )
	rpowref = zref * _pow16tab[-(iexp - 70)];
      else
	rpowref = zref / _pow16tab[(iexp - 70)];

      if ( iround == 0 )
	{
	  /*  Closest number in GRIB format less than original number. */
	  /*  Truncate for positive numbers. */
	  /*  Round up for negative numbers. */

	  if ( isign == 0 )
	    *kmant = (int) rpowref;
	  else
	    *kmant = NINT(rpowref + 0.5);
	}
      else
	{
	  /*  Closest number in GRIB format to the original number */
	  /*  (equal to, greater or less than original number). */

	  *kmant = NINT(rpowref);
	}

      /*  Repeat calculation (with modified exponent) if still have */
      /*  mantissa overflow. */

      if ( *kmant > 16777215 ) goto LABEL350;
    }

  /*  Add sign bit to exponent. */

  *kexp = iexp + isign;

  /* ----------------------------------------------------------------- */
  /*   Section 9. Return                                               */
  /* ----------------------------------------------------------------- */

LABEL900:

  if ( CGRIBEX_Debug )
    {
      Message("Conversion type parameter = %4d", kround);
      Message("Original number = %30.20f", pval);

      zval = decfp2(*kexp, *kmant);

      Message("Converted to      %30.20f", zval);
      Message("Sign = %3d, Exponent = %3d, Mantissa = %12d",
	      isign, iexp, *kmant);
    }

  return;
} /* confp3 */


double decfp2(int kexp, int kmant)
{
  /*

    Purpose:
    --------

    Convert GRIB representation of a floating point
    number to machine representation.

    Input Parameters:
    -----------------

    kexp    - 8 Bit signed exponent.
    kmant   - 24 Bit mantissa.

    Output Parameters:
    ------------------

    Return value   - Floating point number represented
                     by kexp and kmant.

    Method:
    -------

    Floating point number represented as 8 bit exponent
    and 24 bit mantissa in integer values converted to
    machine floating point format.

    Externals:
    ----------

    None.

    Reference:
    ----------

    WMO Manual on Codes re GRIB representation.

    Comments:
    ---------

    Rewritten from DECFP, to conform to programming standards.
    Sign bit on 0 value now ignored, if present.
    If using 32 bit reals, check power of 16 is not so small as to
    cause overflows (underflows!); this causes warning to be given
    on Fujitsus.

    Author:
    -------

    John Hennessy   ECMWF   18.06.91

    Modifications:
    --------------

    Uwe Schulzweida   MPIfM   01/04/2001

     - Convert to C from EMOS library version 130
     
    Uwe Schulzweida   MPIfM   02/08/2002

     - speed up by factor 2 on NEC SX6
        - replace pow(2.0, -24.0) by constant POW_2_M24
        - replace pow(16.0, (double)(iexp - 64)) by pow16m64tab[iexp]
  */

  double pval;
  int iexp, isign;
  extern int CGRIBEX_Debug;
  extern double _pow16tab[71];
  
  /* ----------------------------------------------------------------- */
  /*   Section 1 . Convert value of 0.0. Ignore sign bit.              */
  /* ----------------------------------------------------------------- */

  if ( CGRIBEX_Debug ) Message("KEXP = %d  KMANT = %d", kexp, kmant);
  /*
  if ( (kexp == 128 || kexp == 0) && kmant == 0 )
  */
  if ( (kexp == 128) || (kexp == 0) || (kexp == 255) )
    {
      pval = 0.0;
      goto LABEL900;
    }

  /* ----------------------------------------------------------------- */
  /*   Section 2 . Convert other values.                               */
  /* ----------------------------------------------------------------- */

  /*  Sign of value. */

  iexp  = kexp;
  isign = 1;

  if ( iexp >= 128 )
    {
      iexp -= 128;
      isign = -1;
    }

  /*  Decode value. */

  /* pval = isign * pow(2.0, -24.0) * kmant * pow(16.0, (double)(iexp - 64)); */

  iexp -= 64;

  if ( iexp < 0 )
    pval = 1./_pow16tab[-iexp];
  else
    pval = _pow16tab[iexp];

  pval *= isign * POW_2_M24 * kmant;

  /* ----------------------------------------------------------------- */
  /*   Section 9. Return to calling routine.                           */
  /* ----------------------------------------------------------------- */

LABEL900:

  if ( CGRIBEX_Debug ) Message("Returned value = %f", pval);

  return (pval);
} /* decfp2 */



int gribRefDate(int *isec1)
{
  int date, ryear, rmonth, rday;
  int century;

  century = ISEC1_Century;
  if ( century < 0 ) century = -century;
  century -= 1;

  ryear   = ISEC1_Year;

  /* if ( century != 0 ) */
    {
      if ( ryear == 100 )
	{
	  ryear = 0;
	  century += 1;
	}

      if ( ryear != 255 )
	{
	  ryear = century*100 + ryear;
	  if ( ISEC1_Century < 0 ) ryear = -ryear;
	}
      else
	ryear = 1;
    }

  rmonth  = ISEC1_Month;
  rday    = ISEC1_Day;

  date = cdiEncodeDate(ryear, rmonth, rday);

  return (date) ;
}


int gribRefTime(int *isec1)
{
  int time, rhour, rminute;

  rhour   = ISEC1_Hour;
  rminute = ISEC1_Minute;

  time = cdiEncodeTime(rhour, rminute, 0);

  return (time) ;
}


int gribTimeIsFC(int *isec1)
{
  int isFC = FALSE;
  int time_period;

  if ( ISEC1_TimeRange == 10 )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1826
1827
1828
    time_period = (ISEC1_TimePeriod1<<8) + ISEC1_TimePeriod2;
  else
    time_period = ISEC1_TimePeriod1;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1829

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1830
  if ( time_period > 0 && ISEC1_Day > 0 )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1831
1832
1833
1834
1835
1836
1837
    {
      if ( ISEC1_TimeRange == 0 || ISEC1_TimeRange == 10 ) isFC = TRUE;
    }

  return (isFC);
}

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1838

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1839
1840
1841
void gribDateTime(int *isec1, int *date, int *time)
{
  static int lprint = TRUE;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1842
  int ryear, rmonth, rday, rhour, rminute, second;
1843
  int time_period = 0;
1844
  int julday, secofday, addsec;
1845
  int century;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1846
  extern int grib_calendar;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1847

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1848
1849
1850
1851
  century = ISEC1_Century;
  if ( century < 0 ) century = -century;
  century -= 1;

1852
  ryear   = ISEC1_Year;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1853

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1854
  /* if ( century != 0 ) */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1855
    {
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1856
1857
1858
1859
1860
1861
      if ( ryear == 100 )
	{
	  ryear = 0;
	  century += 1;
	}

Uwe Schulzweida's avatar
Uwe Schulzweida committed
1862
      if ( ryear != 255 )
1863
	{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1864
1865
	  ryear = century*100 + ryear;
	  if ( ISEC1_Century < 0 ) ryear = -ryear;
1866
	}
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1867
1868
1869
1870
1871
1872
1873
1874
1875
      else
	ryear = 1;
    }

  rmonth  = ISEC1_Month;
  rday    = ISEC1_Day;

  rhour   = ISEC1_Hour;
  rminute = ISEC1_Minute;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1876
  second  = 0;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1877
1878

  /* printf("ref %d/%d/%d %d:%d\n", ryear, rmonth, rday, rhour, rminute); */
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1879
1880
1881

  if ( ISEC1_TimeRange == 10 )
    time_period = (ISEC1_TimePeriod1<<8) + ISEC1_TimePeriod2;
1882
1883
1884
  else if ( ISEC1_TimeRange >=2 && ISEC1_TimeRange <= 5 )
    time_period = ISEC1_TimePeriod2;
  else if ( ISEC1_TimeRange == 0 )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1885
1886
1887
    time_period = ISEC1_TimePeriod1;

  if ( time_period > 0 && rday > 0 )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1888
    {
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1889
      encode_caldaysec(grib_calendar, ryear, rmonth, rday, rhour, rminute, second, &julday, &secofday);
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1890

1891
1892
1893
1894
      addsec = 0;
      switch ( ISEC1_TimeUnit )
	{
	case ISEC1_TABLE4_MINUTE:  addsec =    60 * time_period; break;
1895
	case ISEC1_TABLE4_QUARTER: addsec =   900 * time_period; break;
1896
	case ISEC1_TABLE4_HOUR:    addsec =  3600 * time_period; break;
Uwe Schulzweida's avatar
Uwe Schulzweida committed
1897
1898
1899
	case ISEC1_TABLE4_3HOURS:  addsec = 10800 * time_period; break;
	case ISEC1_TABLE4_6HOURS:  addsec = 21600 * time_period; break;
	case ISEC1_TABLE4_12HOURS: addsec = 43200 * time_period; break;
1900
1901
1902
	case ISEC1_TABLE4_DAY:     addsec = 86400 * time_period; break;
	default:
	  if ( lprint )