lapacke_sgtcon.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

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

Function Documentation

LAPACKE_sgtcon()

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

Definition at line 35 of file lapacke_sgtcon.c.

{
    lapack_int info = 0;
    lapack_int* iwork = NULL;
    float* work = NULL;
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_s_nancheck( 1, &anorm, 1 ) ) {
            return -8;
        }
        if( LAPACKE_s_nancheck( n, d, 1 ) ) {
            return -4;
        }
        if( LAPACKE_s_nancheck( n-1, dl, 1 ) ) {
            return -3;
        }
        if( LAPACKE_s_nancheck( n-1, du, 1 ) ) {
            return -5;
        }
        if( LAPACKE_s_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 = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_sgtcon_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_sgtcon", info );
    }
    return info;
}