lapacke_dptsvx.c

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* Contents: Native high-level C interface to LAPACK function dptsvx
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_dptsvx( int matrix_layout, char fact, lapack_int n,
                           lapack_int nrhs, const double* d, const double* e,
                           double* df, double* ef, const double* b,
                           lapack_int ldb, double* x, lapack_int ldx,
                           double* rcond, double* ferr, double* berr )
{
    lapack_int info = 0;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dptsvx", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
            return -9;
        }
        if( LAPACKE_d_nancheck( n, d, 1 ) ) {
            return -5;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_d_nancheck( n, df, 1 ) ) {
                return -7;
            }
        }
        if( LAPACKE_d_nancheck( n-1, e, 1 ) ) {
            return -6;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_d_nancheck( n-1, ef, 1 ) ) {
                return -8;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    /* Call middle-level interface */
    info = LAPACKE_dptsvx_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_dptsvx", info );
    }
    return info;
}