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

lapack_int LAPACKE_dtprfb_work (int matrix_order, char side, char trans, char direct, char storev, lapack_int m, lapack_int n, lapack_int k, lapack_int l, const double *v, lapack_int ldv, const double *t, lapack_int ldt, double *a, lapack_int lda, double *b, lapack_int ldb, const double *work, lapack_int ldwork)

Function/Subroutine Documentation

lapack_int LAPACKE_dtprfb_work ( int  matrix_order,
char  side,
char  trans,
char  direct,
char  storev,
lapack_int  m,
lapack_int  n,
lapack_int  k,
lapack_int  l,
const double *  v,
lapack_int  ldv,
const double *  t,
lapack_int  ldt,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
const double *  work,
lapack_int  ldwork 
)

Definition at line 36 of file lapacke_dtprfb_work.c.

{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dtprfb( &side, &trans, &direct, &storev, &m, &n, &k, &l, v, &ldv,
t, &ldt, a, &lda, b, &ldb, work, &ldwork );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int r = LAPACKE_lsame( side, 'r' ) ? k : k;
lapack_int lda_t = MAX(1,k);
lapack_int ldb_t = MAX(1,m);
lapack_int ldt_t = MAX(1,ldt);
lapack_int ldv_t = MAX(1,ldv);
double* v_t = NULL;
double* t_t = NULL;
double* a_t = NULL;
double* b_t = NULL;
/* Check leading dimension(s) */
if( lda < m ) {
info = -15;
LAPACKE_xerbla( "LAPACKE_dtprfb_work", info );
return info;
}
if( ldb < n ) {
info = -17;
LAPACKE_xerbla( "LAPACKE_dtprfb_work", info );
return info;
}
if( ldt < k ) {
info = -13;
LAPACKE_xerbla( "LAPACKE_dtprfb_work", info );
return info;
}
if( ldv < k ) {
info = -11;
LAPACKE_xerbla( "LAPACKE_dtprfb_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
v_t = (double*)LAPACKE_malloc( sizeof(double) * ldv_t * MAX(1,k) );
if( v_t == NULL ) {
goto exit_level_0;
}
t_t = (double*)LAPACKE_malloc( sizeof(double) * ldt_t * MAX(1,k) );
if( t_t == NULL ) {
goto exit_level_1;
}
a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,m) );
if( a_t == NULL ) {
goto exit_level_2;
}
b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,n) );
if( b_t == NULL ) {
goto exit_level_3;
}
/* Transpose input matrices */
LAPACKE_dge_trans( matrix_order, ldv, k, v, ldv, v_t, ldv_t );
LAPACKE_dge_trans( matrix_order, ldt, k, t, ldt, t_t, ldt_t );
LAPACKE_dge_trans( matrix_order, k, m, a, lda, a_t, lda_t );
LAPACKE_dge_trans( matrix_order, m, n, b, ldb, b_t, ldb_t );
/* Call LAPACK function and adjust info */
LAPACK_dtprfb( &side, &trans, &direct, &storev, &m, &n, &k, &l, v_t,
&ldv_t, t_t, &ldt_t, a_t, &lda_t, b_t, &ldb_t, work,
&ldwork );
info = 0; /* LAPACK call is ok! */
/* Transpose output matrices */
LAPACKE_dge_trans( LAPACK_COL_MAJOR, k, m, a_t, lda_t, a, lda );
LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, b_t, ldb_t, b, ldb );
/* Release memory and exit */
LAPACKE_free( b_t );
exit_level_3:
LAPACKE_free( a_t );
exit_level_2:
LAPACKE_free( t_t );
exit_level_1:
LAPACKE_free( v_t );
exit_level_0:
LAPACKE_xerbla( "LAPACKE_dtprfb_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dtprfb_work", info );
}
return info;
}

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