LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_cggesx.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_cggesx (int matrix_order, 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/Subroutine Documentation

lapack_int LAPACKE_cggesx ( int  matrix_order,
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 36 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;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_cggesx", -1 );
return -1;
}
#ifndef LAPACK_DISABLE_NAN_CHECK
/* Optionally check input matrices for NaNs */
if( LAPACKE_cge_nancheck( matrix_order, n, n, a, lda ) ) {
return -8;
}
if( LAPACKE_cge_nancheck( matrix_order, 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 ) {
goto exit_level_0;
}
}
rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,8*n) );
if( rwork == NULL ) {
goto exit_level_1;
}
/* Query optimal working array(s) size */
info = LAPACKE_cggesx_work( matrix_order, 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 = (lapack_int)iwork_query;
lwork = LAPACK_C2INT( work_query );
/* Allocate memory for work arrays */
iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
if( iwork == NULL ) {
goto exit_level_2;
}
if( work == NULL ) {
goto exit_level_3;
}
/* Call middle-level interface */
info = LAPACKE_cggesx_work( matrix_order, 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;
}

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