BLAS/SRC/sscal.f(3)

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version 3.12.0 · 7 versions
, in centos-stream 10, fedora 43, fedora 44

💖 BLAS/SRC/sscal.f(3) — LAPACK 💖

okay bestie, welcome to the LAPACK section 3 glow-up ✨ this one's a lil BLAS routine living at BLAS/SRC/sscal.f and she is literally the moment.

🌸 NAME 🌸

BLAS/SRC/sscal.f — yes that's her, that's the file, no notes 💅

✨ SYNOPSIS ✨

Functions/Subroutines

  • subroutine sscal (n, sa, sx, incx)
    • SSCAL

🎀 Function/Subroutine Documentation 🎀

subroutine sscal (integer n, real sa, real, dimension(*) sx, integer incx)

SSCAL — the icon herself 👑

Purpose:

SSCAL scales a vector by a constant.

and the tea? it uses unrolled loops for increment equal to 1 — so when INCX is exactly 1 she's speedrunning it, no cap 🏃‍♀️💨

Parameters

  • N — N is INTEGER. it's the number of elements in input vector(s). like, how many lil guys are we scaling today 🫶
  • SA — SA is REAL. On entry, SA specifies the scalar alpha. she's the multiplier, the moment, the main character ✨
  • SX — SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) ). that's the vector getting scaled, and that dimension formula is not a vibe you skip over bestie, copy it exactly 📏
  • INCX — INCX is INTEGER. it's the storage spacing between elements of SX. basically how far apart the elements are chillin' 🦋

Author

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

the whole squad came together for this one, we love a collab 💜

Further Details:

jack dongarra, linpack, 3/11/78.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)
ngl the lore is real: modified 3/93 to return if incx .le. 0 — so if your INCX is zero or negative she just... returns. no drama, no crash, she's out 🌈
and modified 12/3/93 when array(1) declarations got changed to array(*). history, honestly 💀

Definition at line 78 of file sscal.f. go look, line 78, she's right there 📖

💫 Author 💫

Generated automatically by Doxygen for LAPACK from the source code. yes bestie, a robot wrote the docs, but the vibes? immaculate 🤖💖

okay that's the whole page, and fr fr you're now an SSCAL expert 🌟 mwah, love u, go scale something responsibly 🫶

Version 3.12.0 — Tue Nov 28 2023 12:08:41 — BLAS/SRC/sscal.f(3) 🎀✨

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