diff options
Diffstat (limited to 'lapacke/src/lapacke_zhegv.c')
| -rw-r--r-- | lapacke/src/lapacke_zhegv.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/lapacke/src/lapacke_zhegv.c b/lapacke/src/lapacke_zhegv.c new file mode 100644 index 00000000..2ae046e7 --- /dev/null +++ b/lapacke/src/lapacke_zhegv.c @@ -0,0 +1,92 @@ +/***************************************************************************** + 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 high-level C interface to LAPACK function zhegv +* Author: Intel Corporation +* Generated November, 2011 +*****************************************************************************/ + +#include "lapacke.h" +#include "lapacke_utils.h" + +lapack_int LAPACKE_zhegv( int matrix_order, lapack_int itype, char jobz, + char uplo, lapack_int n, lapack_complex_double* a, + lapack_int lda, lapack_complex_double* b, + lapack_int ldb, double* w ) +{ + lapack_int info = 0; + lapack_int lwork = -1; + double* rwork = NULL; + lapack_complex_double* work = NULL; + lapack_complex_double work_query; + if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) { + LAPACKE_xerbla( "LAPACKE_zhegv", -1 ); + return -1; + } +#ifndef LAPACK_DISABLE_NAN_CHECK + /* Optionally check input matrices for NaNs */ + if( LAPACKE_zge_nancheck( matrix_order, n, n, a, lda ) ) { + return -6; + } + if( LAPACKE_zge_nancheck( matrix_order, n, n, b, ldb ) ) { + return -8; + } +#endif + /* Allocate memory for working array(s) */ + rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n-2) ); + if( rwork == NULL ) { + info = LAPACK_WORK_MEMORY_ERROR; + goto exit_level_0; + } + /* Query optimal working array(s) size */ + info = LAPACKE_zhegv_work( matrix_order, itype, jobz, uplo, n, a, lda, b, + ldb, w, &work_query, lwork, rwork ); + if( info != 0 ) { + goto exit_level_1; + } + lwork = LAPACK_Z2INT( work_query ); + /* Allocate memory for work arrays */ + work = (lapack_complex_double*) + LAPACKE_malloc( sizeof(lapack_complex_double) * lwork ); + if( work == NULL ) { + info = LAPACK_WORK_MEMORY_ERROR; + goto exit_level_1; + } + /* Call middle-level interface */ + info = LAPACKE_zhegv_work( matrix_order, itype, jobz, uplo, n, a, lda, b, + ldb, w, work, lwork, rwork ); + /* Release memory and exit */ + LAPACKE_free( work ); +exit_level_1: + LAPACKE_free( rwork ); +exit_level_0: + if( info == LAPACK_WORK_MEMORY_ERROR ) { + LAPACKE_xerbla( "LAPACKE_zhegv", info ); + } + return info; +} |