lapacke_ztrevc.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_ztrevc (int matrix_layout, char side, char howmny, const lapack_logical *select, lapack_int n, lapack_complex_double *t, lapack_int ldt, lapack_complex_double *vl, lapack_int ldvl, lapack_complex_double *vr, lapack_int ldvr, lapack_int mm, lapack_int *m)

Function Documentation

LAPACKE_ztrevc()

lapack_int LAPACKE_ztrevc	(	int	matrix_layout,
		char	side,
		char	howmny,
		const lapack_logical *	select,
		lapack_int	n,
		lapack_complex_double *	t,
		lapack_int	ldt,
		lapack_complex_double *	vl,
		lapack_int	ldvl,
		lapack_complex_double *	vr,
		lapack_int	ldvr,
		lapack_int	mm,
		lapack_int *	m )

Definition at line 35 of file lapacke_ztrevc.c.

{
    lapack_int info = 0;
    double* rwork = NULL;
    lapack_complex_double* work = NULL;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_ztrevc", -1 );
        return -1;
    }
#ifndef LAPACK_DISABLE_NAN_CHECK
    if( LAPACKE_get_nancheck() ) {
        /* Optionally check input matrices for NaNs */
        if( LAPACKE_zge_nancheck( matrix_layout, n, n, t, ldt ) ) {
            return -6;
        }
        if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
            if( LAPACKE_zge_nancheck( matrix_layout, n, mm, vl, ldvl ) ) {
                return -8;
            }
        }
        if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
            if( LAPACKE_zge_nancheck( matrix_layout, n, mm, vr, ldvr ) ) {
                return -10;
            }
        }
    }
#endif
    /* Allocate memory for working array(s) */
    rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_0;
    }
    work = (lapack_complex_double*)
        LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,2*n) );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Call middle-level interface */
    info = LAPACKE_ztrevc_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_ztrevc", info );
    }
    return info;
}