lapacke_zlantr.c

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* Contents: Native high-level C interface to LAPACK function zlantr
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
double LAPACKE_zlantr( int matrix_layout, char norm, char uplo, char diag,
                           lapack_int m, lapack_int n,
                           const lapack_complex_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_zlantr", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_ztr_nancheck( matrix_layout, uplo, diag, MIN(m,n), a, lda ) ) {
            return -7;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    if( LAPACKE_lsame( norm, 'i' ) ) {
        work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,MAX(m,n)) );
        if( work == NULL ) {
            info = LAPACK_WORK_MEMORY_ERROR;
            goto exit_level_0;
        }
    }
    /* Call middle-level interface */
    res = LAPACKE_zlantr_work( matrix_layout, norm, uplo, diag, 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_zlantr", info );
    }
    return res;
}