LOG(3pm)

💖 LOG(3pm) — bestie we're doing logarithms 💖

okay so this is the manual page for PDL::GSLSF::LOG, which is, and I quote, a PDL interface to GSL Special Functions. that's the whole name. that's the vibe. ✨

---

🌸 DESCRIPTION 🌸

so basically?? this is an interface to the Special Function package that lives inside the GNU Scientific Library. that's it. that's the description. short king. 🫶

---

🎀 FUNCTIONS 🎀

✨ gsl_sf_log

Signature: (double x(); double [o]y(); double [o]e())

this one hands you a logarithm function with GSL semantics. GSL semantics!! not regular semantics!! she has her own rules and honestly? respect. 💅

ngl important tea: gsl_sf_log does not process bad values. what it does do is set the bad-value flag of all output ndarrays if that flag is set for any of the input ndarrays. so like, one bad apple and the whole basket gets flagged. no cap. 😭

🦋 gsl_sf_complex_log

Signature: (double zr(); double zi(); double [o]x(); double [o]y(); double [o]xe(); double [o]ye())

Complex Logarithm, and here's the exact math bestie:

exp(lnr + I theta) = zr + I zi

and it returns argument in [-pi,pi]. periodt. that's the range, don't come for me. 🔥

same energy as above fr fr: gsl_sf_complex_log does not process bad values either, and it'll set the bad-value flag of every single output ndarray if the flag is set for any of the input ndarrays. 💀

---

👑 AUTHOR 👑

kay so the whole legal situation, in full, no skipping:

this file is copyright (C) 1999 Christian Pellegrin <chri@infis.univ.trieste.it> — All rights reserved. there is no warranty. you are allowed to redistribute this software / documentation under certain conditions, and for the details you gotta see the file COPYING in the PDL distribution. and — this part matters — if this file ever gets separated from the PDL distribution, the copyright notice should be included in the file. take the notice with you, it's her emotional support notice. 🥺💜

also, extra credit moment: the GSL SF modules were written by G. Jungman. shoutout. 🌟

---

anyway that's the whole page bestie, no crumbs left, every flag and every warning accounted for 💖

🦋 this gem of a manpage comes to you via perl v5.38.2, dated 2024-04-10 — and it's LOG(3pm) if you need her full government name. bye bestie, slay your logarithms responsibly ✨💅🌈