dger.f (3)  Linux Man Pages
NAME
dger.f 
SYNOPSIS
Functions/Subroutines
subroutine dger (M, N, ALPHA, X, INCX, Y, INCY, A, LDA)
DGER
Function/Subroutine Documentation
subroutine dger (integerM, integerN, double precisionALPHA, double precision, dimension(*)X, integerINCX, double precision, dimension(*)Y, integerINCY, double precision, dimension(lda,*)A, integerLDA)
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.
Parameters:

M
M is INTEGER On entry, M specifies the number of rows of the matrix A. M must be at least zero.
NN is INTEGER On entry, N specifies the number of columns of the matrix A. N must be at least zero.
ALPHAALPHA is DOUBLE PRECISION. On entry, ALPHA specifies the scalar alpha.
XX is DOUBLE PRECISION array of dimension at least ( 1 + ( m  1 )*abs( INCX ) ). Before entry, the incremented array X must contain the m element vector x.
INCXINCX is INTEGER On entry, INCX specifies the increment for the elements of X. INCX must not be zero.
YY is DOUBLE PRECISION array of dimension at least ( 1 + ( n  1 )*abs( INCY ) ). Before entry, the incremented array Y must contain the n element vector y.
INCYINCY is INTEGER On entry, INCY specifies the increment for the elements of Y. INCY must not be zero.
AA is DOUBLE PRECISION array of 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.
LDALDA 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.
Date:
 November 2011
Further Details:

Level 2 Blas routine.  Written on 22October1986. Jack Dongarra, Argonne National Lab. Jeremy Du Croz, Nag Central Office. Sven Hammarling, Nag Central Office. Richard Hanson, Sandia National Labs.
Definition at line 131 of file dger.f.
Author
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