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

lapack_int LAPACKE_strsen_work (int matrix_order, char job, char compq, const lapack_logical *select, lapack_int n, float *t, lapack_int ldt, float *q, lapack_int ldq, float *wr, float *wi, lapack_int *m, float *s, float *sep, float *work, lapack_int lwork, lapack_int *iwork, lapack_int liwork)

Function/Subroutine Documentation

lapack_int LAPACKE_strsen_work ( int  matrix_order,
char  job,
char  compq,
const lapack_logical select,
lapack_int  n,
float *  t,
lapack_int  ldt,
float *  q,
lapack_int  ldq,
float *  wr,
float *  wi,
lapack_int m,
float *  s,
float *  sep,
float *  work,
lapack_int  lwork,
lapack_int iwork,
lapack_int  liwork 
)

Definition at line 36 of file lapacke_strsen_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_strsen( &job, &compq, select, &n, t, &ldt, q, &ldq, wr, wi, m, s,
sep, work, &lwork, iwork, &liwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int ldq_t = MAX(1,n);
lapack_int ldt_t = MAX(1,n);
float* t_t = NULL;
float* q_t = NULL;
/* Check leading dimension(s) */
if( ldq < n ) {
info = -9;
LAPACKE_xerbla( "LAPACKE_strsen_work", info );
return info;
}
if( ldt < n ) {
info = -7;
LAPACKE_xerbla( "LAPACKE_strsen_work", info );
return info;
}
/* Allocate memory for temporary array T */
t_t = (float*)LAPACKE_malloc( sizeof(float) * ldt_t * MAX(1,n) );
if( t_t == NULL ) {
goto exit_level_0;
}
/* Transpose input matrix T */
LAPACKE_sge_trans( matrix_order, n, n, t, ldt, t_t, ldt_t );
/* Query optimal working array(s) size if requested */
if( liwork == -1 || lwork == -1 ) {
LAPACK_strsen( &job, &compq, select, &n, t_t, &ldt_t, q, &ldq_t, wr,
wi, m, s, sep, work, &lwork, iwork, &liwork, &info );
LAPACKE_free( t_t );
return (info < 0) ? (info - 1) : info;
}
/* Allocate memory for temporary array(s) */
if( LAPACKE_lsame( compq, 'v' ) ) {
q_t = (float*)LAPACKE_malloc( sizeof(float) * ldq_t * MAX(1,n) );
if( q_t == NULL ) {
goto exit_level_1;
}
}
/* Transpose input matrices */
if( LAPACKE_lsame( compq, 'v' ) ) {
LAPACKE_sge_trans( matrix_order, n, n, q, ldq, q_t, ldq_t );
}
/* Call LAPACK function and adjust info */
LAPACK_strsen( &job, &compq, select, &n, t_t, &ldt_t, q_t, &ldq_t, wr,
wi, m, s, sep, work, &lwork, iwork, &liwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
if( LAPACKE_lsame( compq, 'v' ) ) {
LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
}
/* Release memory and exit */
if( LAPACKE_lsame( compq, 'v' ) ) {
LAPACKE_free( q_t );
}
exit_level_1:
LAPACKE_free( t_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_strsen_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_strsen_work", info );
}
return info;
}

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