NAME

       g2_unpack4.c - Unpack Section 4 (Product Definition Section) of a GRIB2 message.

SYNOPSIS

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

   Functions
       g2int g2_unpack4 (unsigned char *cgrib, g2int *iofst, g2int *ipdsnum, g2int **ipdstmpl, g2int *mappdslen,
           float **coordlist, g2int *numcoord)
           Unpack Section 4 (Product Definition Section) of a GRIB2 message.

Detailed Description

       Unpack Section 4 (Product Definition Section) of a GRIB2 message.

       Author
           Stephen Gilbert

       Date
           2002-10-31

       Definition in file g2_unpack4.c.

Function Documentation

   g2int g2_unpack4 (unsigned char * cgrib, g2int * iofst, g2int * ipdsnum, g2int ** ipdstmpl, g2int *
       mappdslen, float ** coordlist, g2int * numcoord)
       Unpack Section 4 (Product Definition Section) of a GRIB2 message.

   Program History Log
       Date   Programmer   Comments    2002-10-31   Gilbert   Initial    2009-01-14   Vuong   Changed structure
       name template to gtemplate

       Parameters
           cgrib Array containing Section 4 of the GRIB2 message.
           iofst Bit offset of the beginning of Section 4 in cgrib. Returned with updated bit offset.
           ipdsnum Product Definition Template Number (see Table 4.0).
           ipdstmpl Pointer that gets an integer array containing the data values for the Product Definition
           Template specified by ipdsnum.
           mappdslen Number of elements in ipdstmpl - i.e. number of entries in Product Defintion Template
           specified by ipdsnum.
           coordlist Pointer that gets an array containing floating point values intended to document the
           vertical discretisation associated to model data on hybrid coordinate vertical levels.
           numcoord number of values in array coordlist.

       Returns

           • G2_NO_ERROR No error.

           • G2_UNPACK_BAD_SEC Array passed had incorrect section number.

           • G2_UNPACK4_BAD_PDT message contains an undefined Product Definition Template.

           • G2_UNPACK_NO_MEM Memory allocation error.

       Author
           Stephen Gilbert

       Date
           2002-10-31

       Definition at line 45 of file g2_unpack4.c.

       References   gtemplate::ext,   gtemplate::extlen,   extpdstemplate(),   G2_NO_ERROR,  G2_UNPACK4_BAD_PDT,
       G2_UNPACK_BAD_SEC,    G2_UNPACK_NO_MEM,    gbit(),     gbits(),     getpdstemplate(),     gtemplate::map,
       gtemplate::maplen, gtemplate::needext, and rdieee().

       Referenced by g2_getfld().

Author

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

NCEPLIBS-g2c                                      Version 2.1.0                                  g2_unpack4.c(3)