NAME

       aecunpack.c - Unpack a data field that was packed with AEC compression.

SYNOPSIS

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

   Functions
       g2int aecunpack (unsigned char *cpack, g2int len, g2int *idrstmpl, g2int ndpts, float *fld)
           Unpack AEC compressed data into an array of floats, using info from the GRIB2 Data Representation
           Template 5.42.
       static int aecunpack_int (unsigned char *cpack, g2int len, g2int *idrstmpl, g2int ndpts, void *fld, int
           fld_is_double, int verbose)
           Unpack AEC compressed data into an array of floats or doubles, using info from the GRIB2 Data
           Representation Template 5.42.
       int g2c_aecunpackd (unsigned char *cpack, size_t len, int *idrstmpl, size_t ndpts, double *fld)
           Unpack AEC compressed data into an array of doubles, using info from the GRIB2 Data Representation
           Template 5.42.
       int g2c_aecunpackf (unsigned char *cpack, size_t len, int *idrstmpl, size_t ndpts, float *fld)
           Unpack AEC compressed data into an array of floats, using info from the GRIB2 Data Representation
           Template 5.42.

Detailed Description

       Unpack a data field that was packed with AEC compression.

       stream

       Author
           Eric Engle

       Date
           2023-10-16

       Definition in file aecunpack.c.

Function Documentation

   g2int aecunpack (unsigned char * cpack, g2int len, g2int * idrstmpl, g2int ndpts, float * fld)
       Unpack AEC compressed data into an array of floats, using info from the GRIB2 Data Representation
       Template 5.42.

       Parameters
           cpack The packed data.
           len The length of the packed data.
           idrstmpl Pointer to array of values for Data Representation Template 5.42.
           ndpts The number of data values to unpack.
           fld A pointer that gets the unpacked data values as an array of float.

       Returns

           • G2C_NOERROR No error.

       Author
           Eric Engle

       Date
           2023-10-16

       Definition at line 161 of file aecunpack.c.

       References aecunpack_int(), and LOG.

       Referenced by g2c_unpack7_int().

   static  int  aecunpack_int  (unsigned char * cpack, g2int len, g2int * idrstmpl, g2int ndpts, void * fld, int
       fld_is_double, int verbose) [static]
       Unpack AEC compressed data into  an  array  of  floats  or  doubles,  using  info  from  the  GRIB2  Data
       Representation   Template   5.42.   This   function   is   used  by  aecunpack(),  g2c_aecunpackf(),  and
       g2c_aecunpackd().

       Parameters
           cpack The packed data.
           len The length of the packed data.
           idrstmpl Pointer to array of values for Data Representation Template 5.42.
           ndpts The number of data values to unpack.
           fld A pointer that gets the unpacked data values.
           fld_is_double Non-zero if the data are to be unpacked into a double array,  otherwise  data  will  be
           unpacked into a float array.
           verbose  If non-zero, error messages will be printed in case of error. Otherwise, error codes will be
           return but no error messages printed. Calls to the original g2c API may cause error  messages  to  be
           printed  in case of error. For the new g2c_ API, no error messages will be printed - instead an error
           code will be returned. Call g2c_strerror() to get the error message for any error code.

       Returns

           • G2C_NOERROR No error.

           • G2C_ENOMEM Out of memory.

       Author
           Eric Engle

       Date
           2023-10-16

       Definition at line 43 of file aecunpack.c.

       References dec_aec(), G2C_ENOMEM, G2C_NOERROR, gbits(), int_power(), LOG, and rdieee().

       Referenced by aecunpack(), g2c_aecunpackd(), and g2c_aecunpackf().

   int g2c_aecunpackd (unsigned char * cpack, size_t len, int * idrstmpl, size_t ndpts, double * fld)
       Unpack AEC compressed data into an array of doubles,  using  info  from  the  GRIB2  Data  Representation
       Template 5.42. This function is the V2 API version of aecunpack() for doubles.

       Parameters
           cpack The packed data.
           len The length of the packed data.
           idrstmpl Pointer to array of values for Data Representation Template 5.42.
           ndpts The number of data values to unpack.
           fld A pointer that gets the unpacked data values as an array of double.

       Returns

           • G2C_NOERROR No error.

           • G2C_ENOMEM Out of memory.

       Author
           Eric Engle

       Date
           2023-10-16

       Definition at line 232 of file aecunpack.c.

       References aecunpack_int(), G2C_AEC_DRS_TEMPLATE_LEN, and LOG.

   int g2c_aecunpackf (unsigned char * cpack, size_t len, int * idrstmpl, size_t ndpts, float * fld)
       Unpack  AEC  compressed  data  into  an  array  of  floats, using info from the GRIB2 Data Representation
       Template 5.42.

       Parameters
           cpack The packed data.
           len The length of the packed data.
           idrstmpl Pointer to array of values for Data Representation Template 5.42.
           ndpts The number of data values to unpack.
           fld A pointer that gets the unpacked data values as an array of float.

       Returns

           • G2C_NOERROR No error.

           • G2C_ENOMEM Out of memory.

       Author
           Eric Engle

       Date
           2022-10-16

       Definition at line 194 of file aecunpack.c.

       References aecunpack_int(), G2C_AEC_DRS_TEMPLATE_LEN, and LOG.

Author

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NCEPLIBS-g2c                                      Version 2.1.0                                   aecunpack.c(3)