LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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lapacke_cggevx.c File Reference
#include "lapacke_utils.h"
Include dependency graph for lapacke_cggevx.c:

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Functions/Subroutines

lapack_int LAPACKE_cggevx (int matrix_order, char balanc, char jobvl, char jobvr, char sense, lapack_int n, lapack_complex_float *a, lapack_int lda, lapack_complex_float *b, lapack_int ldb, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *vl, lapack_int ldvl, lapack_complex_float *vr, lapack_int ldvr, lapack_int *ilo, lapack_int *ihi, float *lscale, float *rscale, float *abnrm, float *bbnrm, float *rconde, float *rcondv)

Function/Subroutine Documentation

lapack_int LAPACKE_cggevx ( int  matrix_order,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float alpha,
lapack_complex_float beta,
lapack_complex_float vl,
lapack_int  ldvl,
lapack_complex_float vr,
lapack_int  ldvr,
lapack_int ilo,
lapack_int ihi,
float *  lscale,
float *  rscale,
float *  abnrm,
float *  bbnrm,
float *  rconde,
float *  rcondv 
)

Definition at line 36 of file lapacke_cggevx.c.

{
lapack_int info = 0;
lapack_int lwork = -1;
/* Additional scalars declarations for work arrays */
lapack_int lrwork;
lapack_logical* bwork = NULL;
lapack_int* iwork = NULL;
float* rwork = NULL;
lapack_complex_float* work = NULL;
if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
LAPACKE_xerbla( "LAPACKE_cggevx", -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 -7;
}
if( LAPACKE_cge_nancheck( matrix_order, n, n, b, ldb ) ) {
return -9;
}
#endif
/* Additional scalars initializations for work arrays */
if( LAPACKE_lsame( balanc, 's' ) || LAPACKE_lsame( balanc, 'b' ) ) {
lrwork = MAX(1,6*n);
} else {
lrwork = MAX(1,2*n);
}
/* Allocate memory for working array(s) */
if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
LAPACKE_lsame( sense, 'v' ) ) {
bwork = (lapack_logical*)
LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
if( bwork == NULL ) {
goto exit_level_0;
}
}
if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
LAPACKE_lsame( sense, 'v' ) ) {
iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n+2) );
if( iwork == NULL ) {
goto exit_level_1;
}
}
rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
if( rwork == NULL ) {
goto exit_level_2;
}
/* Query optimal working array(s) size */
info = LAPACKE_cggevx_work( matrix_order, balanc, jobvl, jobvr, sense, n, a,
lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
rcondv, &work_query, lwork, rwork, iwork,
bwork );
if( info != 0 ) {
goto exit_level_3;
}
lwork = LAPACK_C2INT( work_query );
/* Allocate memory for work arrays */
if( work == NULL ) {
goto exit_level_3;
}
/* Call middle-level interface */
info = LAPACKE_cggevx_work( matrix_order, balanc, jobvl, jobvr, sense, n, a,
lda, b, ldb, alpha, beta, vl, ldvl, vr, ldvr,
ilo, ihi, lscale, rscale, abnrm, bbnrm, rconde,
rcondv, work, lwork, rwork, iwork, bwork );
/* Release memory and exit */
LAPACKE_free( work );
exit_level_3:
LAPACKE_free( rwork );
exit_level_2:
if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'n' ) ||
LAPACKE_lsame( sense, 'v' ) ) {
LAPACKE_free( iwork );
}
exit_level_1:
if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'e' ) ||
LAPACKE_lsame( sense, 'v' ) ) {
LAPACKE_free( bwork );
}
exit_level_0:
if( info == LAPACK_WORK_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_cggevx", info );
}
return info;
}

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