Scroll to navigation

g2_unpack6.c(3) Library Functions Manual g2_unpack6.c(3)

NAME

g2_unpack6.c - Unpack Section 6 (Bit-Map Section) of a GRIB2 message.

SYNOPSIS

#include 'grib2_int.h'
#include <stdio.h>
#include <stdlib.h>

Functions


g2int g2_unpack6 (unsigned char *cgrib, g2int *iofst, g2int ngpts, g2int *ibmap, g2int **bmap)
Unpack Section 6 (Bit-Map Section) of a GRIB2 message.

Detailed Description

Unpack Section 6 (Bit-Map Section) of a GRIB2 message.

Author

Stephen Gilbert

Date

2002-10-31

Definition in file g2_unpack6.c.

Function Documentation

g2int g2_unpack6 (unsigned char * cgrib, g2int * iofst, g2int ngpts, g2int * ibmap, g2int ** bmap)

Unpack Section 6 (Bit-Map Section) of a GRIB2 message.

Parameters

cgrib char array containing Section 6 of the GRIB2 message.
iofst Bit offset of the beginning of Section 6 in cgrib.
ngpts Number of grid points specified in the bit-map
ibmap Bitmap indicator (see Code Table 6.0)
  • 0 bitmap applies and is included in Section 6.
  • 1-253 Predefined bitmap applies
  • 254 Previously defined bitmap applies to this field
  • 255 Bit map does not apply to this product.

bmap Pointer to an integer array containing decoded bitmap. (if ibmap=0)

Returns

  • G2_NO_ERROR No error.
  • G2_UNPACK_BAD_SEC Array passed had incorrect section number.
  • G2_UNPACK6_BAD_BITMAP Unrecognized pre-defined bit-map.
  • G2_UNPACK_NO_MEM Memory allocation error.

Author

Stephen Gilbert

Date

2002-10-31

Definition at line 32 of file g2_unpack6.c.

References G2_NO_ERROR, G2_UNPACK_BAD_SEC, G2_UNPACK_NO_MEM, gbit(), and gbits().

Referenced by g2_getfld().

Author

Generated automatically by Doxygen for NCEPLIBS-g2c from the source code.

Version 2.1.0 NCEPLIBS-g2c