lapacke_dlange.c

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* Contents: Native high-level C interface to LAPACK function dlange
* Author: Intel Corporation
* Generated November 2015
*****************************************************************************/

#include "lapacke_utils.h"

double LAPACKE_dlange( int matrix_layout, char norm, lapack_int m,
                           lapack_int n, const double* a, lapack_int lda )
{
    lapack_int info = 0;
        double res = 0.;
    double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_dlange", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    /* Optionally check input matrices for NaNs */
    if( LAPACKE_dge_nancheck( matrix_layout, m, n, a, lda ) ) {
        return -5;
    }
#endif
    /* Allocate memory for working array(s) */
    if( LAPACKE_lsame( norm, 'i' ) ) {
        work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,m) );
        if( work == NULL ) {
            info = LAPACK_WORK_MEMORY_ERROR;
            goto exit_level_0;
        }
    }
    /* Call middle-level interface */
    res = LAPACKE_dlange_work( matrix_layout, norm, m, n, a, lda, work );
    /* Release memory and exit */
    if( LAPACKE_lsame( norm, 'i' ) ) {
        LAPACKE_free( work );
    }
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_dlange", info );
    }
    return res;
}