lamc3(3)

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version 3.12.1 · 9 versions
, in arch rolling

💅 lamc3(3) — Library Functions Manual

okay so bestie, buckle up, because this is lamc3(3) and honestly? it's giving "compiler optimizer said no ❤️" energy. it's a tiny little LAPACK helper whose whole personality is forcing numbers to actually live in memory before you add them. iconic behavior, no cap 💖

✨ NAME ✨

lamc3 — lamc3: ??

yeah the description really is just ?? 😭 the docs said "we don't know her" and honestly we respect the honesty.

🌸 SYNOPSIS 🌸

🎀 Functions

  • double precision function dlamc3 (a, b) — DLAMC3
  • real function slamc3 (a, b) — SLAMC3

🦋 Detailed Description

bestie there is literally nothing here. the section exists, it's just vibes and empty space. like a group chat at 3am 🫶

👑 Function Documentation 👑

💜 double precision function dlamc3 (double precision a, double precision b)

DLAMC3 Purpose:

DLAMC3 is intended to force A and B to be stored prior to doing the addition of A and B , for use in situations where optimizers might hold one of these in a register.

like, the whole point is that the optimizer is being too clever — it wants to keep A and B cozy in a register instead of actually storing them. so this function drags them out of the register and makes them get stored first, before the addition of A and B happens. it's the "touch grass" of floating point 🔥

🌈 Author

LAPACK is a software package provided by Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..

🍓 Parameters

  • A
A is a DOUBLE PRECISION
  • B
B is a DOUBLE PRECISION The values A and B.

Definition at line 171 of file dlamch.f. ⭐

🧚 real function slamc3 (real a, real b)

SLAMC3 Purpose:

SLAMC3 is intended to force A and B to be stored prior to doing the addition of A and B , for use in situations where optimizers might hold one of these in a register.

same exact energy, just single precision this time. the optimizer wants to hoard A and B in a register again and SLAMC3 is like "no ma'am, we store first, then we add" 💅

💖 Author

LAPACK is a software package provided by Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..

✨ Parameters

  • A
  • B
The values A and B.

(not me noticing A gets no description here — the docs really just left her on read 🙈)

Definition at line 170 of file slamch.f. ⭐

🌸 Author 🌸

Generated automatically by Doxygen for LAPACK from the source code.

okay that's the whole page, you ate that 🫶

sign-off time bestie: this icon of a manual page is brought to you by LAPACK, Version 3.12.0 💖 (the footer energy is very "no date given, just vibes"). now go forth and force your variables to be stored, periodt. ✨

📦 where this page comes from