Add float variant of chunk write operation.

src/cdi.h

@@ -432,6 +432,7 @@ void    streamReadVarSlice(int streamID, int varID, int levelID, double data[],
 void    streamReadVarSliceF(int streamID, int varID, int levelID, float data[], SizeType *nmiss);
 
 void    streamWriteVarChunk(int streamID, int varID, const int rect[3][2], const double data[], SizeType nmiss);
+void    streamWriteVarChunkF(int streamID, int varID, const int rect[3][2], const float data[], SizeType nmiss);
 
 
 // STREAM record I/O routines (sequential access)

src/stream_write.c

@@ -228,6 +228,15 @@ streamWriteVarChunk(int streamID, int varID, const int rect[3][2], const double
   myCdiStreamWriteVarChunk_(streamID, varID, MEMTYPE_DOUBLE, rect, data, nmiss);
 }
 
+void
+streamWriteVarChunkF(int streamID, int varID, const int rect[3][2], const float *data, SizeType nmiss)
+{
+  void (*myCdiStreamWriteVarChunk_)(int streamID, int varID, int memtype, const int rect[3][2], const void *data, SizeType nmiss)
+      = (void (*)(int, int, int, const int[3][2], const void *, SizeType)) namespaceSwitchGet(NSSWITCH_STREAM_WRITE_VAR_CHUNK_)
+            .func;
+  myCdiStreamWriteVarChunk_(streamID, varID, MEMTYPE_FLOAT, rect, data, nmiss);
+}
+
 // single image implementation
 void
 cdiStreamWriteVarChunk_(int streamID, int varID, int memtype, const int rect[][2], const void *data, SizeType nmiss)