cgeru.f man page

cgeru.f —

Synopsis

Functions/Subroutines

subroutine cgeru (M, N, ALPHA, X, INCX, Y, INCY, A, LDA)
CGERU

Function/Subroutine Documentation

subroutine cgeru (integerM, integerN, complexALPHA, complex, dimension(*)X, integerINCX, complex, dimension(*)Y, integerINCY, complex, dimension(lda,*)A, integerLDA)

CGERU Purpose:

CGERU  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.

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 COMPLEX
 On entry, ALPHA specifies the scalar alpha.

X

X is COMPLEX array of 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 COMPLEX array of 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 COMPLEX 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.

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.

Date:

November 2011

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 131 of file cgeru.f.

Author

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Referenced By

cgeru(3) is an alias of cgeru.f(3).

Sat Nov 16 2013 Version 3.4.2 LAPACK