102 lines
4.3 KiB
C
102 lines
4.3 KiB
C
/*****************************************************************************
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Copyright (c) 2014, 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 high-level C interface to LAPACK function slarfb
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* Author: Intel Corporation
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*****************************************************************************/
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#include "lapacke_utils.h"
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lapack_int LAPACKE_slarfb( int matrix_layout, char side, char trans, char direct,
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char storev, lapack_int m, lapack_int n,
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lapack_int k, const float* v, lapack_int ldv,
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const float* t, lapack_int ldt, float* c,
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lapack_int ldc )
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{
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lapack_int info = 0;
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lapack_int ldwork;
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float* work = NULL;
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lapack_int nrows_v, ncols_v;
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lapack_logical left, col, forward;
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char uplo;
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if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
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LAPACKE_xerbla( "LAPACKE_slarfb", -1 );
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return -1;
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}
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#ifndef LAPACK_DISABLE_NAN_CHECK
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if( LAPACKE_get_nancheck() ) {
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/* Optionally check input matrices for NaNs */
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left = LAPACKE_lsame( side, 'l' );
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col = LAPACKE_lsame( storev, 'c' );
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forward = LAPACKE_lsame( direct, 'f' );
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nrows_v = ( col && left ) ? m : ( ( col && !left ) ? n : ( !col ? k : 1) );
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ncols_v = ( !col && left ) ? m : ( ( !col && !left ) ? n : ( col ? k : 1 ) );
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uplo = ( ( forward && col ) || !( forward || col ) ) ? 'l' : 'u';
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if( ( col && k > nrows_v ) || ( !col && k > ncols_v ) ) {
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LAPACKE_xerbla( "LAPACKE_slarfb", -8 );
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return -8;
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}
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if( LAPACKE_stz_nancheck( matrix_layout, direct, uplo, 'u',
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nrows_v, ncols_v, v, ldv ) ) {
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return -9;
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}
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if( LAPACKE_sge_nancheck( matrix_layout, k, k, t, ldt ) ) {
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return -11;
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}
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if( LAPACKE_sge_nancheck( matrix_layout, m, n, c, ldc ) ) {
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return -13;
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}
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}
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#endif
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if( LAPACKE_lsame( side, 'l' ) ) {
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ldwork = n;
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} else if( LAPACKE_lsame( side, 'r' ) ) {
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ldwork = m;
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} else {
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ldwork = 1;
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}
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/* Allocate memory for working array(s) */
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work = (float*)LAPACKE_malloc( sizeof(float) * ldwork * MAX(1,k) );
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if( work == NULL ) {
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info = LAPACK_WORK_MEMORY_ERROR;
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goto exit_level_0;
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}
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/* Call middle-level interface */
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info = LAPACKE_slarfb_work( matrix_layout, side, trans, direct, storev, m, n,
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k, v, ldv, t, ldt, c, ldc, work, ldwork );
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/* Release memory and exit */
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LAPACKE_free( work );
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exit_level_0:
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if( info == LAPACK_WORK_MEMORY_ERROR ) {
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LAPACKE_xerbla( "LAPACKE_slarfb", info );
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}
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return info;
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}
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