g2_unpack2.c File Reference

Unpack Section 2 (Local Use Section) of a GRIB2 message. More...

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

Go to the source code of this file.

Functions
g2int	g2_unpack2 (unsigned char *cgrib, g2int *iofst, g2int *lencsec2, unsigned char **csec2)
	Unpack Section 2 (Local Use Section) of a GRIB2 message.

Detailed Description

Unpack Section 2 (Local Use Section) of a GRIB2 message.

Author

Stephen Gilbert

Date

2002-10-31

Definition in file g2_unpack2.c.

Function Documentation

g2_unpack2()

g2int g2_unpack2	(	unsigned char *	cgrib,
		g2int *	iofst,
		g2int *	lencsec2,
		unsigned char **	csec2
	)

Unpack Section 2 (Local Use Section) of a GRIB2 message.

Program History Log

Date	Programmer	Comments
2002-10-31	Gilbert	Initial
2008-12-23	Wesley	Initialize lencsec2 Length of Local Use data
2010-08-05	Vuong	If section 2 has zero length, ierr=0

Parameters

cgrib	char array containing Section 2 of the GRIB2 message.
iofst	Pointer that contains the bit offset for the beginning of Section 2 in cgrib. The modified version will be returned.
lencsec2	Length (in octets) of Local Use data.
csec2	Pointer to a pointer that will get an allocated array containing local use data. This memory must be freed by the caller.

Returns

• G2_NO_ERROR No error.
• G2_UNPACK_BAD_SEC Array passed had incorrect section number.
• G2_UNPACK_NO_MEM Memory allocation error.

Author

Stephen Gilbert

Date

2002-10-31

Definition at line 37 of file g2_unpack2.c.

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

Referenced by g2_getfld().