lapacke_stgsja.c

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* Contents: Native high-level C interface to LAPACK function stgsja
* Author: Intel Corporation
* Generated October, 2010
*****************************************************************************/

#include "lapacke.h"
#include "lapacke_utils.h"

lapack_int LAPACKE_stgsja( int matrix_order, 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 )
{
    lapack_int info = 0;
    float* work = NULL;
    if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_stgsja", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_sge_nancheck( matrix_order, m, n, a, lda ) ) {
        return -10;
    }
    if( LAPACKE_sge_nancheck( matrix_order, p, n, b, ldb ) ) {
        return -12;
    }
    if( LAPACKE_lsame( jobq, 'i' ) || LAPACKE_lsame( jobq, 'q' ) ) {
        if( LAPACKE_sge_nancheck( matrix_order, 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_order, m, m, u, ldu ) ) {
            return -18;
        }
    }
    if( LAPACKE_lsame( jobv, 'i' ) || LAPACKE_lsame( jobv, 'v' ) ) {
        if( LAPACKE_sge_nancheck( matrix_order, 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_order, 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;
}