lapacke_dggsvp.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_dggsvp (int matrix_layout, char jobu, char jobv, char jobq, lapack_int m, lapack_int p, lapack_int n, double *a, lapack_int lda, double *b, lapack_int ldb, double tola, double tolb, lapack_int *k, lapack_int *l, double *u, lapack_int ldu, double *v, lapack_int ldv, double *q, lapack_int ldq)

Function Documentation

LAPACKE_dggsvp()

lapack_int LAPACKE_dggsvp	(	int	matrix_layout,
		char	jobu,
		char	jobv,
		char	jobq,
		lapack_int	m,
		lapack_int	p,
		lapack_int	n,
		double *	a,
		lapack_int	lda,
		double *	b,
		lapack_int	ldb,
		double	tola,
		double	tolb,
		lapack_int *	k,
		lapack_int *	l,
		double *	u,
		lapack_int	ldu,
		double *	v,
		lapack_int	ldv,
		double *	q,
		lapack_int	ldq )

Definition at line 35 of file lapacke_dggsvp.c.

{
    lapack_int info = 0;
    lapack_int* iwork = NULL;
    double* tau = NULL;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dggsvp", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
            return -8;
        }
        if( LAPACKE_dge_nancheck( matrix_layout, p, n, b, ldb ) ) {
            return -10;
        }
        if( LAPACKE_d_nancheck( 1, &tola, 1 ) ) {
            return -12;
        }
        if( LAPACKE_d_nancheck( 1, &tolb, 1 ) ) {
            return -13;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
    if( iwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    tau = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
    if( tau == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX3(3*n,m,p)) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_2;
    }
    /* Call middle-level interface */
    info = LAPACKE_dggsvp_work( matrix_layout, jobu, jobv, jobq, m, p, n, a, lda,
                                b, ldb, tola, tolb, k, l, u, ldu, v, ldv, q,
                                ldq, iwork, tau, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_2:
    LAPACKE_free( tau );
exit_level_1:
    LAPACKE_free( iwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dggsvp", info );
    }
    return info;
}