LAPACKE_dptrfs()

lapack_int LAPACKE_dptrfs	(	int	matrix_layout,
		lapack_int	n,
		lapack_int	nrhs,
		const double *	d,
		const double *	e,
		const double *	df,
		const double *	ef,
		const double *	b,
		lapack_int	ldb,
		double *	x,
		lapack_int	ldx,
		double *	ferr,
		double *	berr
	)

Definition at line 35 of file lapacke_dptrfs.c.

{
    lapack_int info = 0;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dptrfs", -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 -8;
        }
        if( LAPACKE_d_nancheck( n, d, 1 ) ) {
            return -4;
        }
        if( LAPACKE_d_nancheck( n, df, 1 ) ) {
            return -6;
        }
        if( LAPACKE_d_nancheck( n-1, e, 1 ) ) {
            return -5;
        }
        if( LAPACKE_d_nancheck( n-1, ef, 1 ) ) {
            return -7;
        }
        if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
            return -10;
        }
    }
#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_dptrfs_work( matrix_layout, n, nrhs, d, e, df, ef, b, ldb, x,
                                ldx, ferr, berr, work );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dptrfs", info );
    }
    return info;

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