CBLAS/src/cblas_chpr2.c(3)

💅 CBLAS/src/cblas_chpr2.c(3) — like, the whole manual, but make it make sense

okay so bestie welcome to the CBLAS/src/cblas_chpr2.c(3) page — part of the Library Functions Manual vibe. this is the one that's giving "rank-2 update of a Hermitian packed matrix" energy, and honestly? we're gonna read it together, no stress 💖

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✨ NAME ✨

CBLAS/src/cblas_chpr2.c — that's it, that's the name, that's the whole identity 🎀 this is the file-slash-page you're looking at, and she is lowkey the main character of this doc.

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🌸 SYNOPSIS 🌸

here's the lineup of what gets pulled in, straight up, no edits:

#include <stdio.h>
#include <stdlib.h>
#include 'cblas.h'
#include 'cblas_f77.h'

ngl the quote-style includes are exactly how they're written in the original — not me changing anything, fr fr 🙈

🦋 Macros

these lil cuties get defined, and like, they're not doing anything mysterious:

• #define F77_UL &UL — grabs the address of UL, slay
• #define F77_N N — N is N, iconic, no notes
• #define F77_incX incx — incX becomes incx, lowercase era
• #define F77_incY incy — same deal for incY → incy, periodt

🧚 Functions

one (1) function, and here she is in all her glory:

void API_SUFFIX cblas_chpr2 (const CBLAS_LAYOUT layout, const CBLAS_UPLO
    Uplo, const CBLAS_INT N, const void *alpha, const void *X, const
    CBLAS_INT incX, const void *Y, const CBLAS_INT incY, void *Ap)

that's void, that's the API_SUFFIX, that's every single parameter — layout, Uplo, N, alpha, X, incX, Y, incY, Ap — all accounted for, we don't lose a single one in this house 💜

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🌈 Macro Definition Documentation 🌈

okay so the doc section that's literally just the same four macros again, but now with their own little heading. we love consistency 💅

#define F77_incX incx

she maps incX onto incx. that's her whole job. and she ate 🔥

#define F77_incY incy

the Y counterpart, doing the exact same thing but for incY → incy. matching set, cute 🎀

#define F77_N N

N equals N. deep, honestly. iconic. no cap.

#define F77_UL &UL

takes the address of UL — the & is doing the heavy lifting here and we respect it 🫶

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⭐ Function Documentation ⭐

void API_SUFFIX cblas_chpr2 (const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo, const CBLAS_INT N, const void * alpha, const void * X, const CBLAS_INT incX, const void * Y, const CBLAS_INT incY, void * Ap)

here's the full signature again, bestie, because we do not gatekeep:

void API_SUFFIX cblas_chpr2 (const CBLAS_LAYOUT layout, const CBLAS_UPLO
    Uplo, const CBLAS_INT N, const void * alpha, const void * X, const
    CBLAS_INT incX, const void * Y, const CBLAS_INT incY, void * Ap)

and the documented fact you actually need: Definition at line 12 of file cblas_chpr2.c. like, that's where she lives, on line 12, at home, thriving ✨

heads up: this page gives you the signature and the location and the macros — that's genuinely all it says. it's not out here explaining the math, so neither am I. we stay factual in this group chat 😭

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👑 Author 👑

Generated automatically by Doxygen for LAPACK from the source code.

so yeah — nobody hand-wrote this, Doxygen just did its thing and we're grateful 🙏 it's giving "auto-generated but make it fashion."

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💖 that's the whole page! every macro, every parameter, every line number, all present and accounted for. mwah 🫶

— LAPACK, Version 3.12.0, CBLAS/src/cblas_chpr2.c(3) — okay bye bestie, go update that Hermitian packed matrix, you're gonna slay 💅✨🎀