/home/abui...N/slarnd.f(3)

💅 SLARND — the random-number glow-up (Library Functions Manual, bestie)

okay so real talk: you wandered into /home/abuild/rpmbuild/BUILD/lapack-static-3.12.0-build/lapack-3.12.0/TESTING/MATGEN/slarnd.f and you're like "what is this file and why is the path a whole novel" 😭 — don't worry, we're gonna break it down together. This is a Library Functions Manual page and it's genuinely so much simpler than that path makes it look.

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✨ SYNOPSIS ✨

Functions/Subroutines

• real function SLARND (idist, iseed) — that's her, that's the whole function, she's called SLARND 🎀

🌸 Function/Subroutine Documentation 🌸

real function SLARND (integer idist, integer, dimension( 4 ) iseed)

SLARND — literally the name. iconic. no notes. 💖

🦋 Purpose:

!>
!> SLARND returns a random real number from a uniform or normal
!> distribution.
!>

so yeah — you call her, she hands you back a random real number, and depending on the vibe you picked it's either uniform or normal. that's the whole job. she ate and left no crumbs 👑

🎀 Parameters

• IDIST — IDIST is INTEGER — this is the vibe selector, the "which distribution are we feeling today" dial. the options are:

!>          IDIST is INTEGER
!>          Specifies the distribution of the random numbers:
!>          = 1:  uniform (0,1)
!>          = 2:  uniform (-1,1)
!>          = 3:  normal (0,1)
!>

so like: = 1 gives you uniform (0,1), = 2 gives you uniform (-1,1), and = 3 gives you normal (0,1). pick your fighter 💅

• ISEED — ISEED is INTEGER array, dimension (4) — the seed of the random number generator, and bestie there are rules:

!>          ISEED is INTEGER array, dimension (4)
!>          On entry, the seed of the random number generator; the array
!>          elements must be between 0 and 4095, and ISEED(4) must be
!>          odd.
!>          On exit, the seed is updated.
!>

on entry: every array element has to be between 0 and 4095, and ISEED(4) must be odd — like, that's not a suggestion, that's the rule, do not come in here with an even ISEED(4) 🙈 on exit: the seed gets updated (she moves on with her life so your next call isn't the same number, periodt).

👑 Author

• Univ. of Tennessee
• Univ. of California Berkeley
• Univ. of Colorado Denver
• NAG Ltd.

(that's a whole squad, a coalition, the avengers of numerics 🫶)

🔥 Further Details:

!>
!>  This routine calls the auxiliary routine SLARAN to generate a random
!>  real number from a uniform (0,1) distribution. The Box-Muller method
!>  is used to transform numbers from a uniform to a normal distribution.
!>

so the tea is: SLARND calls the auxiliary routine SLARAN to get a random real number from a uniform (0,1) distribution, and then the Box-Muller method transforms uniform numbers into a normal distribution. math girlie behavior fr fr 💀✨

ngl the "Further Details" section is where the real plot is — SLARAN does the uniform heavy lifting, Box-Muller does the glow-up to normal.

📍 Definition at line 72 of file slarnd.f.

like, literally line 72. of slarnd.f. now you know exactly where to find her 🧚

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⭐ Author (the meta one) ⭐

Generated automatically by Doxygen for LAPACK from the source code. (so nobody hand-wrote this page, the robots did it, and honestly? slay 🤖💜)

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and that's the whole page bestie — you understood it, no cap. 🌈

LAPACK — Version 3.12.0 — /home/abui...N/slarnd.f(3) 🍓

thanks for reading, mwah, see you in the next manpage 💋🎀