| TESTING/MATGEN/slarge.f(3) | Library Functions Manual | TESTING/MATGEN/slarge.f(3) |
NAME
TESTING/MATGEN/slarge.f
SYNOPSIS
Functions/Subroutines
subroutine slarge (n, a, lda, iseed, work, info)
SLARGE
Function/Subroutine Documentation
subroutine slarge (integer n, real, dimension( lda, * ) a, integer lda, integer, dimension( 4 ) iseed, real, dimension( * ) work, integer info)
SLARGE
Purpose:
!> !> SLARGE pre- and post-multiplies a real general n by n matrix A !> with a random orthogonal matrix: A = U*D*U'. !>
Parameters
N
!> N is INTEGER !> The order of the matrix A. N >= 0. !>
A
!> A is REAL array, dimension (LDA,N) !> On entry, the original n by n matrix A. !> On exit, A is overwritten by U*A*U' for some random !> orthogonal matrix U. !>
LDA
!> LDA is INTEGER !> The leading dimension of the array A. LDA >= N. !>
ISEED
!> ISEED is INTEGER array, dimension (4) !> On entry, the seed of the random number generator; the array !> elements must be between 0 and 4095, and ISEED(4) must be !> odd. !> On exit, the seed is updated. !>
WORK
!> WORK is REAL array, dimension (2*N) !>
INFO
!> INFO is INTEGER !> = 0: successful exit !> < 0: if INFO = -i, the i-th argument had an illegal value !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 86 of file slarge.f.
Author
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