BLAS/SRC/sger.f(3)

✨ BLAS/SRC/sger.f ✨</p>

okay bestie, welcome to the sger page from LAPACK 💖 (yes it lives in the BLAS/SRC corner of the repo, section 3 of the manual, and it is exactly as iconic as it sounds). sit down, hydrate, and let's get into it 🫶

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NAME 🌸

BLAS/SRC/sger.f — it's giving "one file, one purpose, zero notes" 💅

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SYNOPSIS ✨

Functions/Subroutines 🎀

• subroutine sger (m, n, alpha, x, incx, y, incy, a, lda) — SGER

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Function/Subroutine Documentation 💜

subroutine sger 🦋

subroutine sger (integer m, integer n, real alpha, real, dimension(*) x,
    integer incx, real, dimension(*) y, integer incy, real, dimension(lda,*)
    a, integer lda)

SGER — that's the name, no cap 🎀

Purpose 🔥

so here's the tea, bestie: SGER performs the rank 1 operation

A := alpha*x*y**T + A,

where alpha is a scalar, x is an m element vector, y is an n element vector and A is an m by n matrix. literally the glow-up of your matrix, one rank-1 update at a time ✨

Parameters 🍓

• M — M is INTEGER. On entry, M specifies the number of rows of the matrix A. M must be at least zero. (no negative rows, babe, that's not a vibe 🙈)
• N — N is INTEGER. On entry, N specifies the number of columns of the matrix A. N must be at least zero.
• ALPHA — ALPHA is REAL. On entry, ALPHA specifies the scalar alpha. just the little multiplier doing its main character moment 💅
• X — X is REAL array, dimension at least ( 1 + ( m - 1 )*abs( INCX ) ). Before entry, the incremented array X must contain the m element vector x. 🌈
• INCX — INCX is INTEGER. On entry, INCX specifies the increment for the elements of X. INCX must not be zero. > zero is NOT it, bestie 💀
• Y — Y is REAL array, dimension at least ( 1 + ( n - 1 )*abs( INCY ) ). Before entry, the incremented array Y must contain the n element vector y. 🦋
• INCY — INCY is INTEGER. On entry, INCY specifies the increment for the elements of Y. INCY must not be zero. > same rule, same energy, zero is banned 🚫
• A — A is REAL array, dimension ( LDA, N ). Before entry, the leading m by n part of the array A must contain the matrix of coefficients. On exit, A is overwritten by the updated matrix. (yes babe, it gets replaced, she's a changed woman now 😭)
• LDA — LDA is INTEGER. On entry, LDA specifies the first dimension of A as declared in the calling (sub) program. LDA must be at least max( 1, m ). ⭐

Author 👑

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

the whole squad, fr fr 🫶

Further Details: 💙

Level 2 Blas routine.

• Written on 22-October-1986.
  • Jack Dongarra, Argonne National Lab.
  • Jeremy Du Croz, Nag Central Office.
  • Sven Hammarling, Nag Central Office.
  • Richard Hanson, Sandia National Labs.

definition at line 129 of file sger.f — go look, it's right there 📍

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Author 🌈

Generated automatically by Doxygen for LAPACK from the source code. (not me, not you, a robot did this and honestly? slay 🤖✨)

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okay that's the whole page, you ate it, periodt 💅💖 this was LAPACK Version 3.12.0, dated Tue Nov 28 2023 12:08:41, straight out of BLAS/SRC/sger.f — go forth and rank-1 update responsibly, bestie 🎀🦋