lapacke_sgtsvx.c

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

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

lapack_int LAPACKE_sgtsvx( int matrix_order, char fact, char trans,
                           lapack_int n, lapack_int nrhs, const float* dl,
                           const float* d, const float* du, float* dlf,
                           float* df, float* duf, float* du2, lapack_int* ipiv,
                           const float* b, lapack_int ldb, float* x,
                           lapack_int ldx, float* rcond, float* ferr,
                           float* berr )
{
    lapack_int info = 0;
    lapack_int* iwork = NULL;
    float* work = NULL;
    if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_sgtsvx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_sge_nancheck( matrix_order, n, nrhs, b, ldb ) ) {
        return -14;
    }
    if( LAPACKE_s_nancheck( n, d, 1 ) ) {
        return -7;
    }
    if( LAPACKE_lsame( fact, 'f' ) ) {
        if( LAPACKE_s_nancheck( n, df, 1 ) ) {
            return -10;
        }
    }
    if( LAPACKE_s_nancheck( n-1, dl, 1 ) ) {
        return -6;
    }
    if( LAPACKE_lsame( fact, 'f' ) ) {
        if( LAPACKE_s_nancheck( n-1, dlf, 1 ) ) {
            return -9;
        }
    }
    if( LAPACKE_s_nancheck( n-1, du, 1 ) ) {
        return -8;
    }
    if( LAPACKE_lsame( fact, 'f' ) ) {
        if( LAPACKE_s_nancheck( n-2, du2, 1 ) ) {
            return -12;
        }
    }
    if( LAPACKE_lsame( fact, 'f' ) ) {
        if( LAPACKE_s_nancheck( n-1, duf, 1 ) ) {
            return -11;
        }
    }
#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;
    }
    work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_sgtsvx_work( matrix_order, fact, trans, n, nrhs, dl, d, du,
                                dlf, df, duf, du2, ipiv, b, ldb, x, ldx, rcond,
                                ferr, berr, work, iwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_1:
    LAPACKE_free( iwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_sgtsvx", info );
    }
    return info;
}