lapack_int LAPACKE_dtrtri_work( int matrix_order, char uplo, char diag,
lapack_int n, double* a, lapack_int lda )
{
lapack_int info = 0;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dtrtri( &uplo, &diag, &n, a, &lda, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,n);
double* a_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -6;
LAPACKE_xerbla( "LAPACKE_dtrtri_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
if( a_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
/* Transpose input matrices */
LAPACKE_dtr_trans( matrix_order, uplo, diag, n, a, lda, a_t, lda_t );
/* Call LAPACK function and adjust info */
LAPACK_dtrtri( &uplo, &diag, &n, a_t, &lda_t, &info );
if( info < 0 ) {
info = info - 1;
}
/* Transpose output matrices */
LAPACKE_dtr_trans( LAPACK_COL_MAJOR, uplo, diag, n, a_t, lda_t, a,
lda );
/* Release memory and exit */
LAPACKE_free( a_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dtrtri_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dtrtri_work", info );
}
return info;
}
double LAPACKE_dlantr_work( int matrix_order, char norm, char uplo,
char diag, lapack_int m, lapack_int n,
const double* a, lapack_int lda, double* work )
{
lapack_int info = 0;
double res = 0.;
if( matrix_order == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dlantr( &norm, &uplo, &diag, &m, &n, a, &lda, work );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_order == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,m);
double* a_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -8;
LAPACKE_xerbla( "LAPACKE_dlantr_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,MAX(m,n)) );
if( a_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
/* Transpose input matrices */
LAPACKE_dtr_trans( matrix_order, uplo, diag, MAX(m,n), a, lda, a_t, lda_t );
/* Call LAPACK function and adjust info */
res = LAPACK_dlantr( &norm, &uplo, &diag, &m, &n, a_t, &lda_t, work );
info = 0; /* LAPACK call is ok! */
/* Release memory and exit */
LAPACKE_free( a_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dlantr_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dlantr_work", info );
}
return res;
}
void LAPACKE_dpo_trans( int matrix_layout, char uplo, lapack_int n,
const double *in, lapack_int ldin,
double *out, lapack_int ldout )
{
LAPACKE_dtr_trans( matrix_layout, uplo, 'n', n, in, ldin, out, ldout );
}
lapack_int LAPACKE_dtrrfs_work( int matrix_layout, char uplo, char trans,
char diag, lapack_int n, lapack_int nrhs,
const double* a, lapack_int lda,
const double* b, lapack_int ldb,
const double* x, lapack_int ldx, double* ferr,
double* berr, double* work, lapack_int* iwork )
{
lapack_int info = 0;
if( matrix_layout == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dtrrfs( &uplo, &trans, &diag, &n, &nrhs, a, &lda, b, &ldb, x,
&ldx, ferr, berr, work, iwork, &info );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_layout == LAPACK_ROW_MAJOR ) {
lapack_int lda_t = MAX(1,n);
lapack_int ldb_t = MAX(1,n);
lapack_int ldx_t = MAX(1,n);
double* a_t = NULL;
double* b_t = NULL;
double* x_t = NULL;
/* Check leading dimension(s) */
if( lda < n ) {
info = -8;
LAPACKE_xerbla( "LAPACKE_dtrrfs_work", info );
return info;
}
if( ldb < nrhs ) {
info = -10;
LAPACKE_xerbla( "LAPACKE_dtrrfs_work", info );
return info;
}
if( ldx < nrhs ) {
info = -12;
LAPACKE_xerbla( "LAPACKE_dtrrfs_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
if( a_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
if( b_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_1;
}
x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
if( x_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_2;
}
/* Transpose input matrices */
LAPACKE_dtr_trans( matrix_layout, uplo, diag, n, a, lda, a_t, lda_t );
LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
LAPACKE_dge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
/* Call LAPACK function and adjust info */
LAPACK_dtrrfs( &uplo, &trans, &diag, &n, &nrhs, a_t, &lda_t, b_t,
&ldb_t, x_t, &ldx_t, ferr, berr, work, iwork, &info );
if( info < 0 ) {
info = info - 1;
}
/* Release memory and exit */
LAPACKE_free( x_t );
exit_level_2:
LAPACKE_free( b_t );
exit_level_1:
LAPACKE_free( a_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dtrrfs_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dtrrfs_work", info );
}
return info;
}
lapack_int LAPACKE_dlarfb_work( int matrix_layout, char side, char trans,
char direct, char storev, lapack_int m,
lapack_int n, lapack_int k, const double* v,
lapack_int ldv, const double* t, lapack_int ldt,
double* c, lapack_int ldc, double* work,
lapack_int ldwork )
{
lapack_int info = 0;
lapack_int nrows_v, ncols_v;
lapack_int ldc_t, ldt_t, ldv_t;
double *v_t = NULL, *t_t = NULL, *c_t = NULL;
if( matrix_layout == LAPACK_COL_MAJOR ) {
/* Call LAPACK function and adjust info */
LAPACK_dlarfb( &side, &trans, &direct, &storev, &m, &n, &k, v, &ldv, t,
&ldt, c, &ldc, work, &ldwork );
if( info < 0 ) {
info = info - 1;
}
} else if( matrix_layout == LAPACK_ROW_MAJOR ) {
nrows_v = ( LAPACKE_lsame( storev, 'c' ) &&
LAPACKE_lsame( side, 'l' ) ) ? m :
( ( LAPACKE_lsame( storev, 'c' ) &&
LAPACKE_lsame( side, 'r' ) ) ? n :
( LAPACKE_lsame( storev, 'r' ) ? k : 1) );
ncols_v = LAPACKE_lsame( storev, 'c' ) ? k :
( ( LAPACKE_lsame( storev, 'r' ) &&
LAPACKE_lsame( side, 'l' ) ) ? m :
( ( LAPACKE_lsame( storev, 'r' ) &&
LAPACKE_lsame( side, 'r' ) ) ? n : 1) );
ldc_t = MAX(1,m);
ldt_t = MAX(1,k);
ldv_t = MAX(1,nrows_v);
/* Check leading dimension(s) */
if( ldc < n ) {
info = -14;
LAPACKE_xerbla( "LAPACKE_dlarfb_work", info );
return info;
}
if( ldt < k ) {
info = -12;
LAPACKE_xerbla( "LAPACKE_dlarfb_work", info );
return info;
}
if( ldv < ncols_v ) {
info = -10;
LAPACKE_xerbla( "LAPACKE_dlarfb_work", info );
return info;
}
/* Allocate memory for temporary array(s) */
v_t = (double*)
LAPACKE_malloc( sizeof(double) * ldv_t * MAX(1,ncols_v) );
if( v_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_0;
}
t_t = (double*)LAPACKE_malloc( sizeof(double) * ldt_t * MAX(1,k) );
if( t_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_1;
}
c_t = (double*)LAPACKE_malloc( sizeof(double) * ldc_t * MAX(1,n) );
if( c_t == NULL ) {
info = LAPACK_TRANSPOSE_MEMORY_ERROR;
goto exit_level_2;
}
/* Transpose input matrices */
if( LAPACKE_lsame( storev, 'c' ) && LAPACKE_lsame( direct, 'f' ) ) {
LAPACKE_dtr_trans( matrix_layout, 'l', 'u', k, v, ldv, v_t, ldv_t );
LAPACKE_dge_trans( matrix_layout, nrows_v-k, ncols_v, &v[k*ldv], ldv,
&v_t[k], ldv_t );
} else if( LAPACKE_lsame( storev, 'c' ) &&
LAPACKE_lsame( direct, 'b' ) ) {
if( k > nrows_v ) {
LAPACKE_xerbla( "LAPACKE_dlarfb_work", -8 );
return -8;
}
LAPACKE_dtr_trans( matrix_layout, 'u', 'u', k, &v[(nrows_v-k)*ldv],
ldv, &v_t[nrows_v-k], ldv_t );
LAPACKE_dge_trans( matrix_layout, nrows_v-k, ncols_v, v, ldv, v_t,
ldv_t );
} else if( LAPACKE_lsame( storev, 'r' ) &&
LAPACKE_lsame( direct, 'f' ) ) {
LAPACKE_dtr_trans( matrix_layout, 'u', 'u', k, v, ldv, v_t, ldv_t );
LAPACKE_dge_trans( matrix_layout, nrows_v, ncols_v-k, &v[k], ldv,
&v_t[k*ldv_t], ldv_t );
} else if( LAPACKE_lsame( storev, 'r' ) &&
LAPACKE_lsame( direct, 'b' ) ) {
if( k > ncols_v ) {
LAPACKE_xerbla( "LAPACKE_dlarfb_work", -8 );
return -8;
}
LAPACKE_dtr_trans( matrix_layout, 'l', 'u', k, &v[ncols_v-k], ldv,
&v_t[(ncols_v-k)*ldv_t], ldv_t );
LAPACKE_dge_trans( matrix_layout, nrows_v, ncols_v-k, v, ldv, v_t,
ldv_t );
}
LAPACKE_dge_trans( matrix_layout, k, k, t, ldt, t_t, ldt_t );
LAPACKE_dge_trans( matrix_layout, m, n, c, ldc, c_t, ldc_t );
/* Call LAPACK function and adjust info */
LAPACK_dlarfb( &side, &trans, &direct, &storev, &m, &n, &k, v_t, &ldv_t,
t_t, &ldt_t, c_t, &ldc_t, work, &ldwork );
info = 0; /* LAPACK call is ok! */
/* Transpose output matrices */
LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
/* Release memory and exit */
LAPACKE_free( c_t );
exit_level_2:
LAPACKE_free( t_t );
exit_level_1:
LAPACKE_free( v_t );
exit_level_0:
if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
LAPACKE_xerbla( "LAPACKE_dlarfb_work", info );
}
} else {
info = -1;
LAPACKE_xerbla( "LAPACKE_dlarfb_work", info );
}
return info;
}
