lapacke_slantr.c

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* Contents: Native high-level C interface to LAPACK function slantr
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
float LAPACKE_slantr( int matrix_layout, char norm, char uplo, char diag,
                           lapack_int m, lapack_int n, const float* a,
                           lapack_int lda )
{
    lapack_int info = 0;
    float res = 0.;
    float* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_slantr", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_str_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 = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,MAX(m,n)) );
        if( work == NULL ) {
            info = LAPACK_WORK_MEMORY_ERROR;
            goto exit_level_0;
        }
    }
    /* Call middle-level interface */
    res = LAPACKE_slantr_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_slantr", info );
    }
    return res;
}