Adding 2stage to LAPACKE

1 files changed, 103 insertions, 0 deletions

diff --git a/LAPACKE/src/lapacke_dsbevx_2stage.c b/LAPACKE/src/lapacke_dsbevx_2stage.c
new file mode 100644
index 00000000..8738bf27
--- /dev/null
+++ b/LAPACKE/src/lapacke_dsbevx_2stage.c
@@ -0,0 +1,103 @@
+/*****************************************************************************
+  Copyright (c) 2014, 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 dsbevx_2stage
+* Author: Intel Corporation
+* Generated November 2015
+*****************************************************************************/
+
+#include "lapacke_utils.h"
+
+lapack_int LAPACKE_dsbevx_2stage( int matrix_layout, char jobz, char range, char uplo,
+                           lapack_int n, lapack_int kd, double* ab,
+                           lapack_int ldab, double* q, lapack_int ldq,
+                           double vl, double vu, lapack_int il, lapack_int iu,
+                           double abstol, lapack_int* m, double* w, double* z,
+                           lapack_int ldz, lapack_int* ifail )
+{
+    lapack_int info = 0;
+    lapack_int lwork = -1;
+    lapack_int* iwork = NULL;
+    double* work = NULL;
+    double work_query;
+    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
+        LAPACKE_xerbla( "LAPACKE_dsbevx_2stage", -1 );
+        return -1;
+    }
+#ifndef LAPACK_DISABLE_NAN_CHECK
+    /* Optionally check input matrices for NaNs */
+    if( LAPACKE_dsb_nancheck( matrix_layout, uplo, n, kd, ab, ldab ) ) {
+        return -7;
+    }
+    if( LAPACKE_d_nancheck( 1, &abstol, 1 ) ) {
+        return -15;
+    }
+    if( LAPACKE_lsame( range, 'v' ) ) {
+        if( LAPACKE_d_nancheck( 1, &vl, 1 ) ) {
+            return -11;
+        }
+    }
+    if( LAPACKE_lsame( range, 'v' ) ) {
+        if( LAPACKE_d_nancheck( 1, &vu, 1 ) ) {
+            return -12;
+        }
+    }
+#endif
+    /* Query optimal working array(s) size */
+    info = LAPACKE_dsbevx_2stage_work( matrix_layout, jobz, range, uplo, n, kd, ab,
+                                ldab, q, ldq, vl, vu, il, iu, abstol, m, w, z,
+                                ldz, &work_query, lwork, iwork, ifail );
+    if( info != 0 ) {
+        goto exit_level_0;
+    }
+    lwork = (lapack_int) work_query;
+    /* Allocate memory for working array(s) */
+    iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,5*n) );
+    if( iwork == NULL ) {
+        info = LAPACK_WORK_MEMORY_ERROR;
+        goto exit_level_0;
+    }
+    work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
+    if( work == NULL ) {
+        info = LAPACK_WORK_MEMORY_ERROR;
+        goto exit_level_1;
+    }
+    /* Call middle-level interface */
+    info = LAPACKE_dsbevx_2stage_work( matrix_layout, jobz, range, uplo, n, kd, ab,
+                                ldab, q, ldq, vl, vu, il, iu, abstol, m, w, z,
+                                ldz, work, lwork, iwork, ifail );
+    /* Release memory and exit */
+    LAPACKE_free( work );
+exit_level_1:
+    LAPACKE_free( iwork );
+exit_level_0:
+    if( info == LAPACK_WORK_MEMORY_ERROR ) {
+        LAPACKE_xerbla( "LAPACKE_dsbevx_2stage", info );
+    }
+    return info;
+}