160 lines
7.3 KiB
C
160 lines
7.3 KiB
C
/*****************************************************************************
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Copyright (c) 2011, Intel Corp.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************
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* Contents: Native middle-level C interface to LAPACK function clarfb
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* Author: Intel Corporation
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* Generated November, 2011
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*****************************************************************************/
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#include "lapacke_utils.h"
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lapack_int LAPACKE_clarfb_work( int matrix_order, char side, char trans,
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char direct, char storev, lapack_int m,
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lapack_int n, lapack_int k,
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const lapack_complex_float* v, lapack_int ldv,
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const lapack_complex_float* t, lapack_int ldt,
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lapack_complex_float* c, lapack_int ldc,
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lapack_complex_float* work, lapack_int ldwork )
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{
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lapack_int info = 0;
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lapack_int nrows_v, ncols_v;
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lapack_int ldc_t, ldt_t, ldv_t;
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lapack_complex_float *v_t = NULL, *t_t = NULL, *c_t = NULL;
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if( matrix_order == LAPACK_COL_MAJOR ) {
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/* Call LAPACK function and adjust info */
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LAPACK_clarfb( &side, &trans, &direct, &storev, &m, &n, &k, v, &ldv, t,
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&ldt, c, &ldc, work, &ldwork );
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if( info < 0 ) {
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info = info - 1;
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}
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} else if( matrix_order == LAPACK_ROW_MAJOR ) {
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nrows_v = ( LAPACKE_lsame( storev, 'c' ) &&
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LAPACKE_lsame( side, 'l' ) ) ? m :
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( ( LAPACKE_lsame( storev, 'c' ) &&
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LAPACKE_lsame( side, 'r' ) ) ? n :
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( LAPACKE_lsame( storev, 'r' ) ? k : 1) );
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ncols_v = LAPACKE_lsame( storev, 'c' ) ? k :
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( ( LAPACKE_lsame( storev, 'r' ) &&
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LAPACKE_lsame( side, 'l' ) ) ? m :
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( ( LAPACKE_lsame( storev, 'r' ) &&
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LAPACKE_lsame( side, 'r' ) ) ? n : 1) );
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ldc_t = MAX(1,m);
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ldt_t = MAX(1,k);
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ldv_t = MAX(1,nrows_v);
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/* Check leading dimension(s) */
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if( ldc < n ) {
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info = -14;
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LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
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return info;
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}
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if( ldt < k ) {
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info = -12;
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LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
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return info;
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}
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if( ldv < ncols_v ) {
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info = -10;
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LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
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return info;
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}
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/* Allocate memory for temporary array(s) */
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v_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) *
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ldv_t * MAX(1,ncols_v) );
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if( v_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_0;
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}
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t_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) * ldt_t * MAX(1,k) );
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if( t_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_1;
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}
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c_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) * ldc_t * MAX(1,n) );
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if( c_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_2;
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}
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/* Transpose input matrices */
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if( LAPACKE_lsame( storev, 'c' ) && LAPACKE_lsame( direct, 'f' ) ) {
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LAPACKE_ctr_trans( matrix_order, 'l', 'u', k, v, ldv, v_t, ldv_t );
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LAPACKE_cge_trans( matrix_order, nrows_v-k, ncols_v, &v[k*ldv], ldv,
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&v_t[k], ldv_t );
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} else if( LAPACKE_lsame( storev, 'c' ) &&
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LAPACKE_lsame( direct, 'b' ) ) {
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if( k > nrows_v ) {
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LAPACKE_xerbla( "LAPACKE_clarfb_work", -8 );
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return -8;
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}
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LAPACKE_ctr_trans( matrix_order, 'u', 'u', k, &v[(nrows_v-k)*ldv],
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ldv, &v_t[nrows_v-k], ldv_t );
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LAPACKE_cge_trans( matrix_order, nrows_v-k, ncols_v, v, ldv, v_t,
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ldv_t );
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} else if( LAPACKE_lsame( storev, 'r' ) &&
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LAPACKE_lsame( direct, 'f' ) ) {
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LAPACKE_ctr_trans( matrix_order, 'u', 'u', k, v, ldv, v_t, ldv_t );
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LAPACKE_cge_trans( matrix_order, nrows_v, ncols_v-k, &v[k], ldv,
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&v_t[k*ldv_t], ldv_t );
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} else if( LAPACKE_lsame( storev, 'r' ) &&
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LAPACKE_lsame( direct, 'f' ) ) {
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if( k > ncols_v ) {
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LAPACKE_xerbla( "LAPACKE_clarfb_work", -8 );
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return -8;
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}
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LAPACKE_ctr_trans( matrix_order, 'l', 'u', k, &v[ncols_v-k], ldv,
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&v_t[(ncols_v-k)*ldv_t], ldv_t );
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LAPACKE_cge_trans( matrix_order, nrows_v, ncols_v-k, v, ldv, v_t,
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ldv_t );
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}
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LAPACKE_cge_trans( matrix_order, k, k, t, ldt, t_t, ldt_t );
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LAPACKE_cge_trans( matrix_order, m, n, c, ldc, c_t, ldc_t );
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/* Call LAPACK function and adjust info */
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LAPACK_clarfb( &side, &trans, &direct, &storev, &m, &n, &k, v_t, &ldv_t,
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t_t, &ldt_t, c_t, &ldc_t, work, &ldwork );
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info = 0; /* LAPACK call is ok! */
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/* Transpose output matrices */
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LAPACKE_cge_trans( LAPACK_COL_MAJOR, m, n, c_t, ldc_t, c, ldc );
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/* Release memory and exit */
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LAPACKE_free( c_t );
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exit_level_2:
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LAPACKE_free( t_t );
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exit_level_1:
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LAPACKE_free( v_t );
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exit_level_0:
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if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
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LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
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}
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} else {
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info = -1;
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LAPACKE_xerbla( "LAPACKE_clarfb_work", info );
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}
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return info;
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}
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