lapacke_stgsja.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

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

Function Documentation

LAPACKE_stgsja()

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

Definition at line 35 of file lapacke_stgsja.c.

{
    lapack_int info = 0;
    float* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_stgsja", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_sge_nancheck( matrix_layout, m, n, a, lda ) ) {
            return -10;
        }
        if( LAPACKE_sge_nancheck( matrix_layout, p, n, b, ldb ) ) {
            return -12;
        }
        if( LAPACKE_lsame( jobq, 'i' ) || LAPACKE_lsame( jobq, 'q' ) ) {
            if( LAPACKE_sge_nancheck( matrix_layout, n, n, q, ldq ) ) {
                return -22;
            }
        }
        if( LAPACKE_s_nancheck( 1, &tola, 1 ) ) {
            return -14;
        }
        if( LAPACKE_s_nancheck( 1, &tolb, 1 ) ) {
            return -15;
        }
        if( LAPACKE_lsame( jobu, 'i' ) || LAPACKE_lsame( jobu, 'u' ) ) {
            if( LAPACKE_sge_nancheck( matrix_layout, m, m, u, ldu ) ) {
                return -18;
            }
        }
        if( LAPACKE_lsame( jobv, 'i' ) || LAPACKE_lsame( jobv, 'v' ) ) {
            if( LAPACKE_sge_nancheck( matrix_layout, p, p, v, ldv ) ) {
                return -20;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_stgsja_work( matrix_layout, jobu, jobv, jobq, m, p, n, k, l,
                                a, lda, b, ldb, tola, tolb, alpha, beta, u, ldu,
                                v, ldv, q, ldq, work, ncycle );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_stgsja", info );
    }
    return info;
}