lapacke_ctrevc.c

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* Contents: Native high-level C interface to LAPACK function ctrevc
* Author: Intel Corporation
*****************************************************************************/
 
#include "lapacke_utils.h"
 
lapack_int LAPACKE_ctrevc( int matrix_layout, char side, char howmny,
                           const lapack_logical* select, lapack_int n,
                           lapack_complex_float* t, lapack_int ldt,
                           lapack_complex_float* vl, lapack_int ldvl,
                           lapack_complex_float* vr, lapack_int ldvr,
                           lapack_int mm, lapack_int* m )
{
    lapack_int info = 0;
    float* rwork = NULL;
    lapack_complex_float* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_ctrevc", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_cge_nancheck( matrix_layout, n, n, t, ldt ) ) {
            return -6;
        }
        if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
            if( LAPACKE_cge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
                return -8;
            }
        }
        if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
            if( LAPACKE_cge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
                return -10;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (lapack_complex_float*)
        LAPACKE_malloc( sizeof(lapack_complex_float) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_ctrevc_work( matrix_layout, side, howmny, select, n, t, ldt,
                                vl, ldvl, vr, ldvr, mm, m, work, rwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_1:
    LAPACKE_free( rwork );
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_ctrevc", info );
    }
    return info;
}