BLAS/SRC/dger.f(3)

💖 BLAS/SRC/dger.f(3) 💖

okay bestie, this one is straight from the Library Functions Manual and it's all about dger, a BLAS routine with main-character energy. Let's get into it ✨

✨ NAME ✨

BLAS/SRC/dger.f — that's the file, periodt 💅

✨ SYNOPSIS ✨

Functions/Subroutines

• subroutine dger (m, n, alpha, x, incx, y, incy, a, lda) — DGER

subroutine dger (m, n, alpha, x, incx, y, incy, a, lda)
    DGER

🧚 Function/Subroutine Documentation 🧚

subroutine dger (integer m, integer n, double precision alpha, double
    precision, dimension(*) x, integer incx, double precision, dimension(*)
    y, integer incy, double precision, dimension(lda,*) a, integer lda)
    DGER

🌸 Purpose 🌸

DGER 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. Slay, honestly 🫶

💜 Parameters 💜

• M — M is INTEGER. On entry, M specifies the number of rows of the matrix A. M must be at least zero.
• 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 DOUBLE PRECISION. On entry, ALPHA specifies the scalar alpha.
• X — X is DOUBLE PRECISION 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.
• Y — Y is DOUBLE PRECISION 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.
• A — A is DOUBLE PRECISION 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.
• 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.

🦋 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 dger.f.

🎀 Author 🎀

Generated automatically by Doxygen for LAPACK from the source code.

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okay that's the whole page, bestie 💖 footer sign-off: LAPACK, Version 3.12.0, page BLAS/SRC/dger.f(3) — that's the source/version stamp, periodt 🎀✨