Adding 2stage to LAPACKE

1 files changed, 77 insertions, 0 deletions

diff --git a/LAPACKE/src/lapacke_dsbev_2stage.c b/LAPACKE/src/lapacke_dsbev_2stage.c
new file mode 100644
index 00000000..a0cb58f3
--- /dev/null
+++ b/LAPACKE/src/lapacke_dsbev_2stage.c
@@ -0,0 +1,77 @@
+/*****************************************************************************
+  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 dsbev_2stage
+* Author: Intel Corporation
+* Generated November 2015
+*****************************************************************************/
+
+#include "lapacke_utils.h"
+
+lapack_int LAPACKE_dsbev_2stage( int matrix_layout, char jobz, char uplo, lapack_int n,
+                          lapack_int kd, double* ab, lapack_int ldab, double* w,
+                          double* z, lapack_int ldz )
+{
+    lapack_int info = 0;
+    lapack_int lwork = -1;
+    double* work = NULL;
+    double work_query;
+    if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
+        LAPACKE_xerbla( "LAPACKE_dsbev_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 -6;
+    }
+#endif
+    /* Query optimal working array(s) size */
+    info = LAPACKE_dsbev_2stage_work( matrix_layout, jobz, uplo, n, kd, ab, ldab, w, z,
+                               ldz, &work_query, lwork );
+    if( info != 0 ) {
+        goto exit_level_0;
+    }
+    lwork = (lapack_int)work_query;
+    /* Allocate memory for working array(s) */
+    work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
+    if( work == NULL ) {
+        info = LAPACK_WORK_MEMORY_ERROR;
+        goto exit_level_0;
+    }
+    /* Call middle-level interface */
+    info = LAPACKE_dsbev_2stage_work( matrix_layout, jobz, uplo, n, kd, ab, ldab, w, z,
+                               ldz, work, lwork );
+    /* Release memory and exit */
+    LAPACKE_free( work );
+exit_level_0:
+    if( info == LAPACK_WORK_MEMORY_ERROR ) {
+        LAPACKE_xerbla( "LAPACKE_dsbev_2stage", info );
+    }
+    return info;
+}