specunpack.c(3)

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

🦋 specunpack.c — okay bestie, let's unpack this 💅

(from the Library Functions Manual, specunpack.c(3) — yes we're doing section 3 today)

✨ NAME ✨

specunpack.c — unpacks a spectral data field that got packed using the complex packing algorithm for spherical harmonic data. that's the whole gig. no cap. 🎀

🌸 SYNOPSIS 🌸

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

🫶 Functions

  • g2int specunpack (unsigned char *cpack, g2int *idrstmpl, g2int ndpts, g2int JJ, g2int KK, g2int MM, float *fld) — unpacks a spectral data field that was packed with the complex packing algorithm for spherical harmonic data, exactly as defined in the GRIB2 documention, using the info from GRIB2 Data Representation Template 5.51. ✨

💖 Detailed Description 💖

Unpack a spectral data field that was packed using the complex packing algorithm for spherical harmonic data. like. that's it. that's the mission. 🦋

Author Stephen Gilbert 👑

Date 2000-06-21 ⭐

Definition in file specunpack.c.

🔥 Function Documentation 🔥

g2int specunpack (unsigned char * cpack, g2int * idrstmpl, g2int ndpts, g2int JJ, g2int KK, g2int MM, float * fld)

Unpack a spectral data field that was packed using the complex packing algorithm for spherical harmonic data as defined in the GRIB2 documention, using info from the GRIB2 Data Representation Template 5.51. literally the whole point of the function, periodt. 💜

🌈 Parameters 🌈

  • cpack — pointer to the packed data field.
  • idrstmpl — pointer to the array of values for Data Representation Template 5.51.
  • ndpts — The number of data values to unpack (real and imaginary parts). yes, both parts, she's doing double duty. 🙈
  • JJ — pentagonal resolution parameter.
  • KK — pentagonal resolution parameter.
  • MM — pentagonal resolution parameter.
  • fld — Contains the unpacked data values. fld must be allocated with at least ndpts * sizeof(float) bytes before calling this routine.
⚠️ bestie listen. fld needs at least ndpts * sizeof(float) bytes already allocated before you call this. do not come in here with an unallocated pointer, that's not the vibe, that's a crash. 😭

⭐ Returns ⭐

0 for success, -3 for wrong type. so if you get -3, it's giving "wrong type" energy, not "you broke everything" energy. 💅

Author Stephen Gilbert 👑

Date 2000-06-21 ⭐

Definition at line 35 of file specunpack.c.

References G2_NO_ERROR, G2_SPECUNPACK_TYPE, gbits(), int_power(), and rdieee(). 🧚

Referenced by g2c_unpack7_int(). 🫶

👑 Author 👑

Generated automatically by Doxygen for NCEPLIBS-g2c from the source code. so like, no human typed this by hand, the robot did it, and honestly? she ate. 🤖✨

okay that's the whole page, tysm for reading 💖 this doc came from NCEPLIBS-g2c, Version 2.3.0, and it's dated specunpack.c(3) — mwah, slay, go unpack some spherical harmonics bestie 🌸💅🦋

📦 where this page comes from