CBLAS/src/cblas_sgbmv.c(3)

📦
version 3.12.1 · 3 versions
, in arch rolling

💅 CBLAS/src/cblas_sgbmv.c 💅

okay so bestie, welcome to the glow-up of cblas_sgbmv.c — this is page three of the Library Functions Manual (CBLAS/src/cblas_sgbmv.c(3), yes she's a section 3 girlie) and she is literally the CBLAS wrapper for single-precision general band matrix–vector multiply. no cap, she's a whole vibe. let's get into it ✨

🌸 NAME 🌸

CBLAS/src/cblas_sgbmv.c — that's her. that's the name. short, iconic, to the point. periodt 💅

✨ SYNOPSIS ✨

first things first, she includes her two besties:

#include 'cblas.h'
#include 'cblas_f77.h'

🎀 Macros

these little #define cuties are the bridge to the Fortran side of the family — they're all just aliases, no cap:

  • #define F77_TA → &TA (address-of, because Fortran wants the pointer, iykyk)
  • #define F77_M → M
  • #define F77_N → N
  • #define F77_lda → lda
  • #define F77_KL → KL
  • #define F77_KU → KU
  • #define F77_incX → incX
  • #define F77_incY → incY

🦋 Functions

the main character herself 🫶:

void API_SUFFIX cblas_sgbmv (const CBLAS_LAYOUT layout, const
    CBLAS_TRANSPOSE TransA, const CBLAS_INT M, const CBLAS_INT N, const
    CBLAS_INT KL, const CBLAS_INT KU, const float alpha, const float *A,
    const CBLAS_INT lda, const float *X, const CBLAS_INT incX, const
    float beta, float *Y, const CBLAS_INT incY)

that's a lot of parameters and honestly? she ate. 🔥

🧚 MACRO DEFINITION DOCUMENTATION 🧚

same iconic eight macros, now with their own dedicated section because Doxygen said so. giving them their moment 💖

  • #define F77_incX — expands to incX
  • #define F77_incY — expands to incY
  • #define F77_KL — expands to KL
  • #define F77_KU — expands to KU
  • #define F77_lda — expands to lda
  • #define F77_M — expands to M
  • #define F77_N — expands to N
  • #define F77_TA — expands to &TA

all verified, all accounted for, nobody left behind 💜

👑 FUNCTION DOCUMENTATION 👑

⭐ void API_SUFFIX cblas_sgbmv (...)

here she is in full glam, every single parameter exactly as declared:

void API_SUFFIX cblas_sgbmv (const CBLAS_LAYOUT layout, const
    CBLAS_TRANSPOSE TransA, const CBLAS_INT M, const CBLAS_INT N, const
    CBLAS_INT KL, const CBLAS_INT KU, const float alpha, const float * A,
    const CBLAS_INT lda, const float * X, const CBLAS_INT incX, const float
    beta, float * Y, const CBLAS_INT incY)

and the important footnote, bestie — don't skip this:

Definition at line 12 of file cblas_sgbmv.c. 📍

that's where the magic lives, fr fr.

🌈 AUTHOR 🌈

Generated automatically by Doxygen for LAPACK from the source code.

so nobody hand-wrote this in a Notes app at 2am — it's Doxygen doing Doxygen things, serving looks automatically for LAPACK. we respect the automation. 🤖✨

and that's a wrap on our girl! 🎀 she's from the LAPACK manual, Version 3.12.0, and this little section-3 page is dated and stamped as CBLAS/src/cblas_sgbmv.c(3) in the footer — mwah 💋 byeee, go multiply something banded, you've got this 🦋💖

📦 where this page comes from