aecunpack.c(3)

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version 2.3.0 · 2 versions
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💖 aecunpack.c — the aecunpack.c(3) page, bestie edition 💖

okay so this is aecunpack.c(3) from the Library Functions Manual, and it's literally all about unpacking a data field that was packed with AEC compression. yes bestie, we're un-squishing data. it's giving ✨reverse magic✨.

✨ 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.

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👑 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().

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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and that's the whole page, bestie!! 💖✨ this one came from NCEPLIBS-g2c, Version 2.3.0, and the footer date on the original is aecunpack.c(3) — slay, go unpack some data, you've got this 🫶🎀

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