diff options
Diffstat (limited to 'lapacke/src/lapacke_zhseqr_work.c')
| -rw-r--r-- | lapacke/src/lapacke_zhseqr_work.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/lapacke/src/lapacke_zhseqr_work.c b/lapacke/src/lapacke_zhseqr_work.c new file mode 100644 index 00000000..ad0ad121 --- /dev/null +++ b/lapacke/src/lapacke_zhseqr_work.c @@ -0,0 +1,121 @@ +/***************************************************************************** + Copyright (c) 2011, Intel Corp. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + * Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of Intel Corporation nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + THE POSSIBILITY OF SUCH DAMAGE. +***************************************************************************** +* Contents: Native middle-level C interface to LAPACK function zhseqr +* Author: Intel Corporation +* Generated November, 2011 +*****************************************************************************/ + +#include "lapacke.h" +#include "lapacke_utils.h" + +lapack_int LAPACKE_zhseqr_work( int matrix_order, char job, char compz, + lapack_int n, lapack_int ilo, lapack_int ihi, + lapack_complex_double* h, lapack_int ldh, + lapack_complex_double* w, + lapack_complex_double* z, lapack_int ldz, + lapack_complex_double* work, lapack_int lwork ) +{ + lapack_int info = 0; + if( matrix_order == LAPACK_COL_MAJOR ) { + /* Call LAPACK function and adjust info */ + LAPACK_zhseqr( &job, &compz, &n, &ilo, &ihi, h, &ldh, w, z, &ldz, work, + &lwork, &info ); + if( info < 0 ) { + info = info - 1; + } + } else if( matrix_order == LAPACK_ROW_MAJOR ) { + lapack_int ldh_t = MAX(1,n); + lapack_int ldz_t = MAX(1,n); + lapack_complex_double* h_t = NULL; + lapack_complex_double* z_t = NULL; + /* Check leading dimension(s) */ + if( ldh < n ) { + info = -8; + LAPACKE_xerbla( "LAPACKE_zhseqr_work", info ); + return info; + } + if( ldz < n ) { + info = -11; + LAPACKE_xerbla( "LAPACKE_zhseqr_work", info ); + return info; + } + /* Query optimal working array(s) size if requested */ + if( lwork == -1 ) { + LAPACK_zhseqr( &job, &compz, &n, &ilo, &ihi, h, &ldh_t, w, z, + &ldz_t, work, &lwork, &info ); + return (info < 0) ? (info - 1) : info; + } + /* Allocate memory for temporary array(s) */ + h_t = (lapack_complex_double*) + LAPACKE_malloc( sizeof(lapack_complex_double) * ldh_t * MAX(1,n) ); + if( h_t == NULL ) { + info = LAPACK_TRANSPOSE_MEMORY_ERROR; + goto exit_level_0; + } + if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) { + z_t = (lapack_complex_double*) + LAPACKE_malloc( sizeof(lapack_complex_double) * + ldz_t * MAX(1,n) ); + if( z_t == NULL ) { + info = LAPACK_TRANSPOSE_MEMORY_ERROR; + goto exit_level_1; + } + } + /* Transpose input matrices */ + LAPACKE_zge_trans( matrix_order, n, n, h, ldh, h_t, ldh_t ); + if( LAPACKE_lsame( compz, 'v' ) ) { + LAPACKE_zge_trans( matrix_order, n, n, z, ldz, z_t, ldz_t ); + } + /* Call LAPACK function and adjust info */ + LAPACK_zhseqr( &job, &compz, &n, &ilo, &ihi, h_t, &ldh_t, w, z_t, + &ldz_t, work, &lwork, &info ); + if( info < 0 ) { + info = info - 1; + } + /* Transpose output matrices */ + LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, h_t, ldh_t, h, ldh ); + if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) { + LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz ); + } + /* Release memory and exit */ + if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) { + LAPACKE_free( z_t ); + } +exit_level_1: + LAPACKE_free( h_t ); +exit_level_0: + if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) { + LAPACKE_xerbla( "LAPACKE_zhseqr_work", info ); + } + } else { + info = -1; + LAPACKE_xerbla( "LAPACKE_zhseqr_work", info ); + } + return info; +} |