LAPACK  3.5.0
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lapacke_dtgevc_work.c File Reference
#include "lapacke_utils.h"
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Functions/Subroutines

lapack_int LAPACKE_dtgevc_work (int matrix_order, char side, char howmny, const lapack_logical *select, lapack_int n, const double *s, lapack_int lds, const double *p, lapack_int ldp, double *vl, lapack_int ldvl, double *vr, lapack_int ldvr, lapack_int mm, lapack_int *m, double *work)

Function/Subroutine Documentation

lapack_int LAPACKE_dtgevc_work ( int  matrix_order,
char  side,
char  howmny,
const lapack_logical select,
lapack_int  n,
const double *  s,
lapack_int  lds,
const double *  p,
lapack_int  ldp,
double *  vl,
lapack_int  ldvl,
double *  vr,
lapack_int  ldvr,
lapack_int  mm,
lapack_int m,
double *  work 
)

Definition at line 36 of file lapacke_dtgevc_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dtgevc( &side, &howmny, select, &n, s, &lds, p, &ldp, vl, &ldvl,
vr, &ldvr, &mm, m, work, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldp_t = MAX(1,n);
lapack_int lds_t = MAX(1,n);
lapack_int ldvl_t = MAX(1,n);
lapack_int ldvr_t = MAX(1,n);
double* s_t = NULL;
double* p_t = NULL;
double* vl_t = NULL;
double* vr_t = NULL;
/* Check leading dimension(s) */
if( ldp < n ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
return info;
}
if( lds < n ) {
info = -7;
LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
return info;
}
if( ldvl < mm ) {
info = -11;
LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
return info;
}
if( ldvr < mm ) {
info = -13;
LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
s_t = (double*)LAPACKE_malloc( sizeof(double) * lds_t * MAX(1,n) );
if( s_t == NULL ) {
goto exit_level_0;
}
p_t = (double*)LAPACKE_malloc( sizeof(double) * ldp_t * MAX(1,n) );
if( p_t == NULL ) {
goto exit_level_1;
}
if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
vl_t = (double*)
LAPACKE_malloc( sizeof(double) * ldvl_t * MAX(1,mm) );
if( vl_t == NULL ) {
goto exit_level_2;
}
}
if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
vr_t = (double*)
LAPACKE_malloc( sizeof(double) * ldvr_t * MAX(1,mm) );
if( vr_t == NULL ) {
goto exit_level_3;
}
}
/* Transpose input matrices */
LAPACKE_dge_trans( matrix_order, n, n, s, lds, s_t, lds_t );
LAPACKE_dge_trans( matrix_order, n, n, p, ldp, p_t, ldp_t );
if( ( LAPACKE_lsame( side, 'l' ) || LAPACKE_lsame( side, 'b' ) ) &&
LAPACKE_lsame( howmny, 'b' ) ) {
LAPACKE_dge_trans( matrix_order, n, mm, vl, ldvl, vl_t, ldvl_t );
}
if( ( LAPACKE_lsame( side, 'r' ) || LAPACKE_lsame( side, 'b' ) ) &&
LAPACKE_lsame( howmny, 'b' ) ) {
LAPACKE_dge_trans( matrix_order, n, mm, vr, ldvr, vr_t, ldvr_t );
}
/* Call LAPACK function and adjust info */
LAPACK_dtgevc( &side, &howmny, select, &n, s_t, &lds_t, p_t, &ldp_t,
vl_t, &ldvl_t, vr_t, &ldvr_t, &mm, m, work, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
ldvl );
}
if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
ldvr );
}
/* Release memory and exit */
if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
LAPACKE_free( vr_t );
}
exit_level_3:
if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
LAPACKE_free( vl_t );
}
exit_level_2:
LAPACKE_free( p_t );
exit_level_1:
LAPACKE_free( s_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dtgevc_work", info );
}
return info;
}

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