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

lapack_int LAPACKE_dgecon (int matrix_order, char norm, lapack_int n, const double *a, lapack_int lda, double anorm, double *rcond)

Function/Subroutine Documentation

lapack_int LAPACKE_dgecon ( int  matrix_order,
char  norm,
lapack_int  n,
const double *  a,
lapack_int  lda,
double  anorm,
double *  rcond 
)

Definition at line 36 of file lapacke_dgecon.c.

{
lapack_int info = 0;
lapack_int* iwork = NULL;
double* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_dgecon", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_dge_nancheck( matrix_order, n, n, a, lda ) ) {
return -4;
}
if( LAPACKE_d_nancheck( 1, &anorm, 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(1,4*n) );
if( work == NULL ) {
goto exit_level_1;
}
/* Call middle-level interface */
info = LAPACKE_dgecon_work( matrix_order, norm, n, a, lda, 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_dgecon", info );
}
return info;
}

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