lapacke_dgtsvx.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_dgtsvx (int matrix_layout, char fact, char trans, lapack_int n, lapack_int nrhs, const double *dl, const double *d, const double *du, double *dlf, double *df, double *duf, double *du2, lapack_int *ipiv, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *rcond, double *ferr, double *berr)

Function Documentation

LAPACKE_dgtsvx()

lapack_int LAPACKE_dgtsvx	(	int	matrix_layout,
		char	fact,
		char	trans,
		lapack_int	n,
		lapack_int	nrhs,
		const double *	dl,
		const double *	d,
		const double *	du,
		double *	dlf,
		double *	df,
		double *	duf,
		double *	du2,
		lapack_int *	ipiv,
		const double *	b,
		lapack_int	ldb,
		double *	x,
		lapack_int	ldx,
		double *	rcond,
		double *	ferr,
		double *	berr )

Definition at line 35 of file lapacke_dgtsvx.c.

{
    lapack_int info = 0;
    lapack_int* iwork = NULL;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dgtsvx", -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 -14;
        }
        if( LAPACKE_d_nancheck( n, d, 1 ) ) {
            return -7;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_d_nancheck( n, df, 1 ) ) {
                return -10;
            }
        }
        if( LAPACKE_d_nancheck( n-1, dl, 1 ) ) {
            return -6;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_d_nancheck( n-1, dlf, 1 ) ) {
                return -9;
            }
        }
        if( LAPACKE_d_nancheck( n-1, du, 1 ) ) {
            return -8;
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_d_nancheck( n-2, du2, 1 ) ) {
                return -12;
            }
        }
        if( LAPACKE_lsame( fact, 'f' ) ) {
            if( LAPACKE_d_nancheck( n-1, duf, 1 ) ) {
                return -11;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
    if( iwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_dgtsvx_work( matrix_layout, fact, trans, n, nrhs, dl, d, du,
                                dlf, df, duf, du2, ipiv, b, ldb, x, ldx, rcond,
                                ferr, berr, work, iwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_1:
    LAPACKE_free( iwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dgtsvx", info );
    }
    return info;
}