lapacke_dgtcon.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_dgtcon (char norm, lapack_int n, const double *dl, const double *d, const double *du, const double *du2, const lapack_int *ipiv, double anorm, double *rcond)

Function Documentation

LAPACKE_dgtcon()

lapack_int LAPACKE_dgtcon	(	char	norm,
		lapack_int	n,
		const double *	dl,
		const double *	d,
		const double *	du,
		const double *	du2,
		const lapack_int *	ipiv,
		double	anorm,
		double *	rcond )

Definition at line 35 of file lapacke_dgtcon.c.

{
    lapack_int info = 0;
    lapack_int* iwork = NULL;
    double* work = NULL;
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_d_nancheck( 1, &anorm, 1 ) ) {
            return -8;
        }
        if( LAPACKE_d_nancheck( n, d, 1 ) ) {
            return -4;
        }
        if( LAPACKE_d_nancheck( n-1, dl, 1 ) ) {
            return -3;
        }
        if( LAPACKE_d_nancheck( n-1, du, 1 ) ) {
            return -5;
        }
        if( LAPACKE_d_nancheck( n-2, du2, 1 ) ) {
            return -6;
        }
    }
#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(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_dgtcon_work( norm, n, dl, d, du, du2, ipiv, anorm, rcond,
                                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_dgtcon", info );
    }
    return info;
}