From c593321a397874d4ac1b392a2679109508f52733 Mon Sep 17 00:00:00 2001
From: Julie <julie@cs.utk.edu>
Date: Sat, 17 Dec 2016 16:19:25 -0800
Subject: Adding 2stage to LAPACKE

---
 LAPACKE/src/lapacke_chegv_2stage.c | 91 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 LAPACKE/src/lapacke_chegv_2stage.c

(limited to 'LAPACKE/src/lapacke_chegv_2stage.c')

diff --git a/LAPACKE/src/lapacke_chegv_2stage.c b/LAPACKE/src/lapacke_chegv_2stage.c
new file mode 100644
index 00000000..6c8fd2c1
--- /dev/null
+++ b/LAPACKE/src/lapacke_chegv_2stage.c
@@ -0,0 +1,91 @@
+/*****************************************************************************
+  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 chegv
+* Author: Intel Corporation
+* Generated November 2015
+*****************************************************************************/
+
+#include "lapacke_utils.h"
+
+lapack_int LAPACKE_chegv( int matrix_layout, lapack_int itype, char jobz,
+                          char uplo, lapack_int n, lapack_complex_float* a,
+                          lapack_int lda, lapack_complex_float* b,
+                          lapack_int ldb, float* w )
+{
+    lapack_int info = 0;
+    lapack_int lwork = -1;
+    float* rwork = NULL;
+    lapack_complex_float* work = NULL;
+    lapack_complex_float work_query;
+    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
+        LAPACKE_xerbla( "LAPACKE_chegv", -1 );
+        return -1;
+    }
+#ifndef LAPACK_DISABLE_NAN_CHECK
+    /* Optionally check input matrices for NaNs */
+    if( LAPACKE_cge_nancheck( matrix_layout, n, n, a, lda ) ) {
+        return -6;
+    }
+    if( LAPACKE_cge_nancheck( matrix_layout, n, n, b, ldb ) ) {
+        return -8;
+    }
+#endif
+    /* Allocate memory for working array(s) */
+    rwork = (float*)LAPACKE_malloc( sizeof(float) * 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_chegv_work( matrix_layout, itype, jobz, uplo, n, a, lda, b,
+                               ldb, w, &work_query, lwork, rwork );
+    if( info != 0 ) {
+        goto exit_level_1;
+    }
+    lwork = LAPACK_C2INT( work_query );
+    /* Allocate memory for work arrays */
+    work = (lapack_complex_float*)
+        LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
+    if( work == NULL ) {
+        info = LAPACK_WORK_MEMORY_ERROR;
+        goto exit_level_1;
+    }
+    /* Call middle-level interface */
+    info = LAPACKE_chegv_work( matrix_layout, 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_chegv", info );
+    }
+    return info;
+}
-- 
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