TESTING/MATGEN/dlarge.f(3) Library Functions Manual NAME TESTING/MATGEN/dlarge.f SYNOPSIS Functions/Subroutines subroutine dlarge (n, a, lda, iseed, work, info) DLARGE Function/Subroutine Documentation subroutine dlarge (integer n, double precision, dimension( lda, * ) a, integer lda, integer, dimension( 4 ) iseed, double precision, dimension( * ) work, integer info) DLARGE Purpose: DLARGE 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 DOUBLE PRECISION 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 DOUBLE PRECISION 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 dlarge.f. Author Generated automatically by Doxygen for LAPACK from the source code. LAPACK Version 3.12.0 TESTING/MATGEN/dlarge.f(3)