# clarge.f - Man Page

TESTING/MATGEN/clarge.f

## Synopsis

### Functions/Subroutines

subroutine **clarge** (n, a, lda, iseed, work, info)**CLARGE**

## Function/Subroutine Documentation

### subroutine clarge (integer n, complex, dimension( lda, * ) a, integer lda, integer, dimension( 4 ) iseed, complex, dimension( * ) work, integer info)

**CLARGE**

**Purpose:**

CLARGE pre- and post-multiplies a complex general n by n matrix A with a random unitary matrix: A = U*D*U'.

**Parameters***N*N is INTEGER The order of the matrix A. N >= 0.

*A*A is COMPLEX 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 unitary 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 COMPLEX 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 **clarge.f**.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page clarge(3) is an alias of clarge.f(3).

Tue Nov 28 2023 12:08:43 Version 3.12.0 LAPACK