lapacke_cggesx.c File Reference

#include "lapacke_utils.h"

Go to the source code of this file.

Functions
lapack_int	LAPACKE_cggesx (int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_C_SELECT2 selctg, char sense, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, lapack_int *sdim, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *vsl, lapack_int ldvsl, lapack_complex_float *vsr, lapack_int ldvsr, float *rconde, float *rcondv)

Function Documentation

LAPACKE_cggesx()

lapack_int LAPACKE_cggesx	(	int	matrix_layout,
		char	jobvsl,
		char	jobvsr,
		char	sort,
		LAPACK_C_SELECT2	selctg,
		char	sense,
		lapack_int	n,
		lapack_complex_float *	a,
		lapack_int	lda,
		lapack_complex_float *	b,
		lapack_int	ldb,
		lapack_int *	sdim,
		lapack_complex_float *	alpha,
		lapack_complex_float *	beta,
		lapack_complex_float *	vsl,
		lapack_int	ldvsl,
		lapack_complex_float *	vsr,
		lapack_int	ldvsr,
		float *	rconde,
		float *	rcondv )

Definition at line 35 of file lapacke_cggesx.c.

{
    lapack_int info = 0;
    lapack_int liwork = -1;
    lapack_int lwork = -1;
    lapack_logical* bwork = NULL;
    lapack_int* iwork = NULL;
    float* rwork = NULL;
    lapack_complex_float* work = NULL;
    lapack_int iwork_query;
    lapack_complex_float work_query;
    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
        LAPACKE_xerbla( "LAPACKE_cggesx", -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, a, lda ) ) {
            return -8;
        }
        if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
            return -10;
        }
    }
#endif
    /* Allocate memory for working array(s) */
    if( LAPACKE_lsame( sort, 's' ) ) {
        bwork = (lapack_logical*)
            LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
        if( bwork == NULL ) {
            info = LAPACK_WORK_MEMORY_ERROR;
            goto exit_level_0;
        }
    }
    rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,8*n) );
    if( rwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_1;
    }
    /* Query optimal working array(s) size */
    info = LAPACKE_cggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
                                sense, n, a, lda, b, ldb, sdim, alpha, beta,
                                vsl, ldvsl, vsr, ldvsr, rconde, rcondv,
                                &work_query, lwork, rwork, &iwork_query, liwork,
                                bwork );
    if( info != 0 ) {
        goto exit_level_2;
    }
    liwork = iwork_query;
    lwork = LAPACK_C2INT( work_query );
    /* Allocate memory for work arrays */
    iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
    if( iwork == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_2;
    }
    work = (lapack_complex_float*)
        LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
    if( work == NULL ) {
        info = LAPACK_WORK_MEMORY_ERROR;
        goto exit_level_3;
    }
    /* Call middle-level interface */
    info = LAPACKE_cggesx_work( matrix_layout, jobvsl, jobvsr, sort, selctg,
                                sense, n, a, lda, b, ldb, sdim, alpha, beta,
                                vsl, ldvsl, vsr, ldvsr, rconde, rcondv, work,
                                lwork, rwork, iwork, liwork, bwork );
    /* Release memory and exit */
    LAPACKE_free( work );
exit_level_3:
    LAPACKE_free( iwork );
exit_level_2:
    LAPACKE_free( rwork );
exit_level_1:
    if( LAPACKE_lsame( sort, 's' ) ) {
        LAPACKE_free( bwork );
    }
exit_level_0:
    if( info == LAPACK_WORK_MEMORY_ERROR ) {
        LAPACKE_xerbla( "LAPACKE_cggesx", info );
    }
    return info;
}