174 lines
7.6 KiB
C
174 lines
7.6 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 middle-level C interface to LAPACK function cgbrfsx
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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_cgbrfsx_work( int matrix_layout, char trans, char equed,
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lapack_int n, lapack_int kl, lapack_int ku,
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lapack_int nrhs,
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const lapack_complex_float* ab,
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lapack_int ldab,
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const lapack_complex_float* afb,
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lapack_int ldafb, const lapack_int* ipiv,
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const float* r, const float* c,
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const lapack_complex_float* b, lapack_int ldb,
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lapack_complex_float* x, lapack_int ldx,
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float* rcond, float* berr,
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lapack_int n_err_bnds, float* err_bnds_norm,
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float* err_bnds_comp, lapack_int nparams,
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float* params, lapack_complex_float* work,
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float* rwork )
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{
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lapack_int info = 0;
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if( matrix_layout == LAPACK_COL_MAJOR ) {
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/* Call LAPACK function and adjust info */
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LAPACK_cgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab, &ldab, afb,
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&ldafb, ipiv, r, c, b, &ldb, x, &ldx, rcond, berr,
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&n_err_bnds, err_bnds_norm, err_bnds_comp, &nparams,
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params, work, rwork, &info );
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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_layout == LAPACK_ROW_MAJOR ) {
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lapack_int ldab_t = MAX(1,kl+ku+1);
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lapack_int ldafb_t = MAX(1,2*kl+ku+1);
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lapack_int ldb_t = MAX(1,n);
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lapack_int ldx_t = MAX(1,n);
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lapack_complex_float* ab_t = NULL;
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lapack_complex_float* afb_t = NULL;
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lapack_complex_float* b_t = NULL;
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lapack_complex_float* x_t = NULL;
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float* err_bnds_norm_t = NULL;
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float* err_bnds_comp_t = NULL;
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/* Check leading dimension(s) */
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if( ldab < n ) {
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info = -9;
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LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
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return info;
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}
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if( ldafb < n ) {
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info = -11;
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LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
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return info;
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}
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if( ldb < nrhs ) {
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info = -16;
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LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
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return info;
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}
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if( ldx < nrhs ) {
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info = -18;
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LAPACKE_xerbla( "LAPACKE_cgbrfsx_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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ab_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
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if( ab_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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afb_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) * ldafb_t * MAX(1,n) );
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if( afb_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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b_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) *
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ldb_t * MAX(1,nrhs) );
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if( b_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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x_t = (lapack_complex_float*)
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LAPACKE_malloc( sizeof(lapack_complex_float) *
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ldx_t * MAX(1,nrhs) );
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if( x_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_3;
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}
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err_bnds_norm_t = (float*)
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LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
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if( err_bnds_norm_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_4;
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}
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err_bnds_comp_t = (float*)
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LAPACKE_malloc( sizeof(float) * nrhs * MAX(1,n_err_bnds) );
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if( err_bnds_comp_t == NULL ) {
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info = LAPACK_TRANSPOSE_MEMORY_ERROR;
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goto exit_level_5;
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}
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/* Transpose input matrices */
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LAPACKE_cgb_trans( matrix_layout, n, n, kl, ku, ab, ldab, ab_t, ldab_t );
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LAPACKE_cgb_trans( matrix_layout, n, n, kl, kl+ku, afb, ldafb, afb_t,
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ldafb_t );
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LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
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LAPACKE_cge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
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/* Call LAPACK function and adjust info */
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LAPACK_cgbrfsx( &trans, &equed, &n, &kl, &ku, &nrhs, ab_t, &ldab_t,
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afb_t, &ldafb_t, ipiv, r, c, b_t, &ldb_t, x_t, &ldx_t,
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rcond, berr, &n_err_bnds, err_bnds_norm_t,
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err_bnds_comp_t, &nparams, params, work, rwork, &info );
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if( info < 0 ) {
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info = info - 1;
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}
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/* Transpose output matrices */
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LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
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LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_norm_t,
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nrhs, err_bnds_norm, nrhs );
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LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrhs, n_err_bnds, err_bnds_comp_t,
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nrhs, err_bnds_comp, nrhs );
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/* Release memory and exit */
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LAPACKE_free( err_bnds_comp_t );
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exit_level_5:
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LAPACKE_free( err_bnds_norm_t );
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exit_level_4:
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LAPACKE_free( x_t );
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exit_level_3:
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LAPACKE_free( b_t );
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exit_level_2:
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LAPACKE_free( afb_t );
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exit_level_1:
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LAPACKE_free( ab_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_cgbrfsx_work", info );
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}
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} else {
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info = -1;
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LAPACKE_xerbla( "LAPACKE_cgbrfsx_work", info );
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}
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return info;
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}
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