patch from Nathanael Huebbe: 0005-added-a-single-precision-version-of-streamReadVar.patch

src/stream.c

@@ -1506,8 +1506,11 @@ void cdiStreamReadVar(int streamID, int varID, int memtype, void *data, int *nmi
     case FILETYPE_NC4:
     case FILETYPE_NC4C:
       {
-        if ( memtype == MEMTYPE_FLOAT ) Error("cdfReadVar not implemented for memtype float!");
-        cdfReadVarDP(streamptr, varID, data, nmiss);
+        if ( memtype == MEMTYPE_FLOAT )
+          cdfReadVarSP(streamptr, varID, data, nmiss);
+        else
+          cdfReadVarDP(streamptr, varID, data, nmiss);
+
 	break;
       }
 #endif

src/stream_cdf.h

@@ -18,6 +18,8 @@ void   cdfReadRecord(stream_t *streamptr, double *data, int *nmiss);
 void   cdf_write_record(stream_t *streamptr, int memtype, const void *data, int nmiss);
 
 void   cdfReadVarDP(stream_t *streamptr, int varID, double *data, int *nmiss);
+void   cdfReadVarSP(stream_t *streamptr, int varID, float *data, int *nmiss);
+
 void   cdf_write_var(stream_t *streamptr, int varID, int memtype, const void *data, int nmiss);
 
 void   cdfReadVarSliceDP(stream_t *streamptr, int varID, int levelID, double *data, int *nmiss);