lapacke_cptrfs.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_cptrfs (int matrix_layout, char uplo, lapack_int n, lapack_int nrhs, const float *d, const lapack_complex_float *e, const float *df, const lapack_complex_float *ef, const lapack_complex_float *b, lapack_int ldb, lapack_complex_float *x, lapack_int ldx, float *ferr, float *berr)

Function Documentation

LAPACKE_cptrfs()

lapack_int LAPACKE_cptrfs	(	int	matrix_layout,
		char	uplo,
		lapack_int	n,
		lapack_int	nrhs,
		const float *	d,
		const lapack_complex_float *	e,
		const float *	df,
		const lapack_complex_float *	ef,
		const lapack_complex_float *	b,
		lapack_int	ldb,
		lapack_complex_float *	x,
		lapack_int	ldx,
		float *	ferr,
		float *	berr )

Definition at line 35 of file lapacke_cptrfs.c.

{
    lapack_int info = 0;
    float* rwork = NULL;
    lapack_complex_float* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_cptrfs", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_cge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
            return -9;
        }
        if( LAPACKE_s_nancheck( n, d, 1 ) ) {
            return -5;
        }
        if( LAPACKE_s_nancheck( n, df, 1 ) ) {
            return -7;
        }
        if( LAPACKE_c_nancheck( n-1, e, 1 ) ) {
            return -6;
        }
        if( LAPACKE_c_nancheck( n-1, ef, 1 ) ) {
            return -8;
        }
        if( LAPACKE_cge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
            return -11;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (lapack_complex_float*)
        LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_cptrfs_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_cptrfs", info );
    }
    return info;
}