Adding 2stage to LAPACKE

1 files changed, 114 insertions, 0 deletions

diff --git a/LAPACKE/src/lapacke_dsbevd_2stage_work.c b/LAPACKE/src/lapacke_dsbevd_2stage_work.c
new file mode 100644
index 00000000..a28fc382
--- /dev/null
+++ b/LAPACKE/src/lapacke_dsbevd_2stage_work.c
@@ -0,0 +1,114 @@
+/*****************************************************************************
+  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 middle-level C interface to LAPACK function dsbevd_2stage
+* Author: Intel Corporation
+* Generated November 2015
+*****************************************************************************/
+
+#include "lapacke_utils.h"
+
+lapack_int LAPACKE_dsbevd_2stage_work( 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, double* work, lapack_int lwork,
+                                lapack_int* iwork, lapack_int liwork )
+{
+    lapack_int info = 0;
+    if( matrix_layout == LAPACK_COL_MAJOR ) {
+        /* Call LAPACK function and adjust info */
+        LAPACK_dsbevd_2stage( &jobz, &uplo, &n, &kd, ab, &ldab, w, z, &ldz, work,
+                       &lwork, iwork, &liwork, &info );
+        if( info < 0 ) {
+            info = info - 1;
+        }
+    } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
+        lapack_int ldab_t = MAX(1,kd+1);
+        lapack_int ldz_t = MAX(1,n);
+        double* ab_t = NULL;
+        double* z_t = NULL;
+        /* Check leading dimension(s) */
+        if( ldab < n ) {
+            info = -7;
+            LAPACKE_xerbla( "LAPACKE_dsbevd_2stage_work", info );
+            return info;
+        }
+        if( ldz < n ) {
+            info = -10;
+            LAPACKE_xerbla( "LAPACKE_dsbevd_2stage_work", info );
+            return info;
+        }
+        /* Query optimal working array(s) size if requested */
+        if( liwork == -1 || lwork == -1 ) {
+            LAPACK_dsbevd_2stage( &jobz, &uplo, &n, &kd, ab, &ldab_t, w, z, &ldz_t,
+                           work, &lwork, iwork, &liwork, &info );
+            return (info < 0) ? (info - 1) : info;
+        }
+        /* Allocate memory for temporary array(s) */
+        ab_t = (double*)LAPACKE_malloc( sizeof(double) * ldab_t * MAX(1,n) );
+        if( ab_t == NULL ) {
+            info = LAPACK_TRANSPOSE_MEMORY_ERROR;
+            goto exit_level_0;
+        }
+        if( LAPACKE_lsame( jobz, 'v' ) ) {
+            z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
+            if( z_t == NULL ) {
+                info = LAPACK_TRANSPOSE_MEMORY_ERROR;
+                goto exit_level_1;
+            }
+        }
+        /* Transpose input matrices */
+        LAPACKE_dsb_trans( matrix_layout, uplo, n, kd, ab, ldab, ab_t, ldab_t );
+        /* Call LAPACK function and adjust info */
+        LAPACK_dsbevd_2stage( &jobz, &uplo, &n, &kd, ab_t, &ldab_t, w, z_t, &ldz_t,
+                       work, &lwork, iwork, &liwork, &info );
+        if( info < 0 ) {
+            info = info - 1;
+        }
+        /* Transpose output matrices */
+        LAPACKE_dsb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
+                           ldab );
+        if( LAPACKE_lsame( jobz, 'v' ) ) {
+            LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
+        }
+        /* Release memory and exit */
+        if( LAPACKE_lsame( jobz, 'v' ) ) {
+            LAPACKE_free( z_t );
+        }
+exit_level_1:
+        LAPACKE_free( ab_t );
+exit_level_0:
+        if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
+            LAPACKE_xerbla( "LAPACKE_dsbevd_2stage_work", info );
+        }
+    } else {
+        info = -1;
+        LAPACKE_xerbla( "LAPACKE_dsbevd_2stage_work", info );
+    }
+    return info;
+}