LAPACKE_zptrfs()

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

Definition at line 35 of file lapacke_zptrfs.c.

{
    lapack_int info = 0;
    double* rwork = NULL;
    lapack_complex_double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_zptrfs", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
            return -9;
        }
        if( LAPACKE_d_nancheck( n, d, 1 ) ) {
            return -5;
        }
        if( LAPACKE_d_nancheck( n, df, 1 ) ) {
            return -7;
        }
        if( LAPACKE_z_nancheck( n-1, e, 1 ) ) {
            return -6;
        }
        if( LAPACKE_z_nancheck( n-1, ef, 1 ) ) {
            return -8;
        }
        if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
            return -11;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (lapack_complex_double*)
        LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_zptrfs_work( matrix_layout, uplo, n, nrhs, d, e, df, ef, b,
                                ldb, x, ldx, ferr, berr, work, rwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_1:
    LAPACKE_free( rwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_zptrfs", info );
    }
    return info;

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