lapacke_sptsvx.c

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* Contents: Native high-level C interface to LAPACK function sptsvx
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_sptsvx( int matrix_layout, char fact, lapack_int n,
                           lapack_int nrhs, const float* d, const float* e,
                           float* df, float* ef, const float* b, lapack_int ldb,
                           float* x, lapack_int ldx, float* rcond, float* ferr,
                           float* berr )
{
    lapack_int info = 0;
    float* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_sptsvx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
            return -9;
        }
        if( LAPACKE_s_nancheck( n, d, 1 ) ) {
            return -5;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_s_nancheck( n, df, 1 ) ) {
                return -7;
            }
        }
        if( LAPACKE_s_nancheck( n-1, e, 1 ) ) {
            return -6;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_s_nancheck( n-1, ef, 1 ) ) {
                return -8;
            }
        }
    }
#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_sptsvx_work( matrix_layout, fact, n, nrhs, d, e, df, ef, b,
                                ldb, x, ldx, rcond, ferr, berr, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_sptsvx", info );
    }
    return info;
}