LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_dgtcon.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

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/Subroutine Documentation

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 36 of file lapacke_dgtcon.c.

{
lapack_int info = 0;
lapack_int* iwork = NULL;
double* work = NULL;
#ifndef LAPACK_DISABLE_NAN_CHECK
/* 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 ) {
goto exit_level_0;
}
work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
if( work == NULL ) {
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;
}

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