comunpack.c(3)

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version 2.3.0 · 2 versions
, in ubuntu resolute, ubuntu stonking

💖 comunpack.c — Library Functions Manual 💖

okay bestie, buckle up, we're looking at comunpack.c from section 3 of the manual (that's Library Functions Manual energy, iykyk) 🫶

✨ NAME ✨

comunpack.c — Unpack a data field that was packed using a complex packing algorithm as defined in the GRIB2 documention. 🦋

✨ SYNOPSIS ✨

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

🌸 Functions 🌸

  • int comunpack (unsigned char *cpack, g2int lensec, g2int idrsnum, g2int *idrstmpl, g2int ndpts, float *fld) — Unpack a data field that was packed using a complex packing algorithm, using info from the GRIB2 Data Representation Template 5.2 or Template 5.3.

🌈 Detailed Description 🌈

Unpack a data field that was packed using a complex packing algorithm as defined in the GRIB2 documention. no cap, that's the whole vibe of this file 💅

Author Stephen Gilbert

Date 2002-10-29

Definition in file comunpack.c.

👑 Function Documentation 👑

💜 int comunpack (unsigned char * cpack, g2int lensec, g2int idrsnum, g2int * idrstmpl, g2int ndpts, float * fld) 💜

Unpack a data field that was packed using a complex packing algorithm, using info from the GRIB2 Data Representation Template 5.2 or Template 5.3. Supports GRIB2 complex packing templates with or without spatial differences (i.e. DRTs 5.2 and 5.3). periodt ✨

🎀 Program History Log 🎀

  1. 2002-10-29 — Gilbert — Initial
  2. 2004-12-16 — Gilbert — Added test (from Arthur Taylor/MDL) verifying group widths/lengths

🍓 Parameters 🍓

  • cpack — pointer to the packed data field.
  • lensec — length of section 7 (used for error checking).
  • idrsnum — Data Representation Template number. Must equal 2 or 3.
  • idrstmpl — pointer to the array of values for Data Representation Template 5.2 or 5.3
  • ndpts — The number of data values to unpack
  • fld — Contains the unpacked data values. Must be allocated with at least ndpts * sizeof(float) bytes before calling this routine.
bestie, for real, fld has to be allocated with at least ndpts * sizeof(float) bytes before you call this. don't skip that step, it's giving "crash" otherwise 😭

🫶 Returns 🫶

0 for success, error code otherwise.

Author Stephen Gilbert

Date 2002-10-29

Definition at line 41 of file comunpack.c.

References gbit(), gbits(), int_power(), LOG, and rdieee().

Referenced by g2c_unpack7_int().

💀 Author 💀

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

and that's a wrap, my love 💖 this lil page came from NCEPLIBS-g2c, Version 2.3.0, and it's the comunpack.c(3) page — slay, go unpack something 🌸🦋👑

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