cmplxpack.c(3)

✨ cmplxpack.c — bestie edition ✨

okay so this is the cmplxpack.c(3) page from the Library Functions Manual and honestly? it's giving "quiet little function that does a LOT". sit down, hydrate, let's go 💖

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🌸 NAME 🌸

cmplxpack.c — pack a data field using a complex packing algorithm. that's it, that's the whole job, and it does it gorgeously 💅

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🦋 SYNOPSIS 🦋

#include 'grib2_int.h'

✨ Functions ✨

• void cmplxpack (float *fld, g2int ndpts, g2int idrsnum, g2int *idrstmpl, unsigned char *cpack, g2int *lcpack) — pack up a data field using a complex packing algorithm. iconic behavior, no notes 🫶

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💜 Detailed Description 💜

Pack a data field using a complex packing algorithm. that's the vibe. that's the whole vibe. ✨

Author: Stephen Gilbert — we love him, we thank him 🙏

Date: 2004-08-27 — yes she's been slaying since 2004, a true veteran 👑

Definition in file cmplxpack.c.

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🎀 Function Documentation 🎀

void cmplxpack (float * fld, g2int ndpts, g2int idrsnum, g2int * idrstmpl, unsigned char * cpack, g2int * lcpack)

Pack up a data field using a complex packing algorithm. ok so here's the tea: this function supports GRIB2 complex packing templates with or without spatial differences (that's DRTs 5.2 and 5.3, bestie, write it down 📝). and not only does it pack — it also fills in GRIB2 Data Representation Template 5.2 or 5.3 with the appropriate values. she does the whole assignment AND the extra credit, main character energy fr fr 🔥

💖 Parameters 💖

• fld — contains the data values to pack. the raw material, the ingredients, the ~content~ 🍓
• ndpts — the number of data values in array fld. like, how many of them. count them. 🧮
• idrsnum — Data Representation Template number. must equal 2 or 3. not 4, not 1, not "close enough" — 2 or 3, periodt 💀
• idrstmpl — contains the array of values for Data Representation Template 5.2 or 5.3. and the indices inside it are:
  • 0 — Reference value — ignored on input, set by compack routine. so don't bother filling it in, it's not listening 🙈
  • 1 — Binary Scale Factor
  • 2 — Decimal Scale Factor
  • 6 — Missing value management
  • 7 — Primary missing value
  • 8 — Secondary missing value
  • 16 — Order of Spatial Differencing ( 1 or 2 ) — pick one, bestie, you got this ✨
• cpack — the packed data field. the glow-up result 💅
• lcpack — length of packed field cpack. and heads up: will be set to -1 if missing value management field is not 1 or 2. so if you see a -1, that's not a bug, that's the function telling you the vibes were off 😭

Author: Stephen Gilbert

Date: 2004-08-27

Definition at line 37 of file cmplxpack.c.

References: compack(), and misspack(). — the besties she calls up when she needs backup 🫶

Referenced by: g2_addfield(). — and she gets called right back, mutuals only 💞

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🌈 Author 🌈

Generated automatically by Doxygen for NCEPLIBS-g2c from the source code. yes girl, the robots wrote the docs, and they ate ✨

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lowkey a whole lesson in GRIB2 packing disguised as a group chat. no cap. 💀💖

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and that's the page, bestie!! this was NCEPLIBS-g2c, Version 2.3.0 🎀 bye bye, go pack something iconic 🦋🌸💅