109 lines
4.7 KiB
C
109 lines
4.7 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 zgbsvx
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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_zgbsvx( int matrix_layout, char fact, char trans,
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lapack_int n, lapack_int kl, lapack_int ku,
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lapack_int nrhs, lapack_complex_double* ab,
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lapack_int ldab, lapack_complex_double* afb,
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lapack_int ldafb, lapack_int* ipiv, char* equed,
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double* r, double* c, lapack_complex_double* b,
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lapack_int ldb, lapack_complex_double* x,
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lapack_int ldx, double* rcond, double* ferr,
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double* berr, double* rpivot )
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{
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lapack_int info = 0;
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double* rwork = NULL;
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lapack_complex_double* work = NULL;
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if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
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LAPACKE_xerbla( "LAPACKE_zgbsvx", -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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if( LAPACKE_zgb_nancheck( matrix_layout, n, n, kl, ku, ab, ldab ) ) {
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return -8;
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}
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if( LAPACKE_lsame( fact, 'f' ) ) {
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if( LAPACKE_zgb_nancheck( matrix_layout, n, n, kl, kl+ku, afb,
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ldafb ) ) {
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return -10;
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}
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}
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if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
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return -16;
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}
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if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
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LAPACKE_lsame( *equed, 'c' ) ) ) {
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if( LAPACKE_d_nancheck( n, c, 1 ) ) {
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return -15;
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}
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}
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if( LAPACKE_lsame( fact, 'f' ) && ( LAPACKE_lsame( *equed, 'b' ) ||
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LAPACKE_lsame( *equed, 'r' ) ) ) {
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if( LAPACKE_d_nancheck( n, r, 1 ) ) {
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return -14;
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}
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}
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}
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#endif
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/* Allocate memory for working array(s) */
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rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
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if( rwork == 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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work = (lapack_complex_double*)
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LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,2*n) );
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if( work == NULL ) {
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info = LAPACK_WORK_MEMORY_ERROR;
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goto exit_level_1;
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}
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/* Call middle-level interface */
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info = LAPACKE_zgbsvx_work( matrix_layout, fact, trans, n, kl, ku, nrhs, ab,
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ldab, afb, ldafb, ipiv, equed, r, c, b, ldb, x,
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ldx, rcond, ferr, berr, work, rwork );
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/* Backup significant data from working array(s) */
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*rpivot = rwork[0];
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/* Release memory and exit */
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LAPACKE_free( work );
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exit_level_1:
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LAPACKE_free( rwork );
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exit_level_0:
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if( info == LAPACK_WORK_MEMORY_ERROR ) {
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LAPACKE_xerbla( "LAPACKE_zgbsvx", info );
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}
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return info;
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}
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