summaryrefslogtreecommitdiff
path: root/Build/source/libs/gmp/gmp-6.0.0/mpn/cray/lshift.c
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpn/cray/lshift.c')
-rw-r--r--Build/source/libs/gmp/gmp-6.0.0/mpn/cray/lshift.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/cray/lshift.c b/Build/source/libs/gmp/gmp-6.0.0/mpn/cray/lshift.c
new file mode 100644
index 00000000000..074f38041a1
--- /dev/null
+++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/cray/lshift.c
@@ -0,0 +1,59 @@
+/* mpn_lshift -- Shift left low level for Cray vector processors.
+
+Copyright (C) 2000 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of either:
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at your
+ option) any later version.
+
+or
+
+ * the GNU General Public License as published by the Free Software
+ Foundation; either version 2 of the License, or (at your option) any
+ later version.
+
+or both in parallel, as here.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received copies of the GNU General Public License and the
+GNU Lesser General Public License along with the GNU MP Library. If not,
+see https://www.gnu.org/licenses/. */
+
+#include <intrinsics.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+
+mp_limb_t
+mpn_lshift (mp_ptr wp, mp_srcptr up, mp_size_t n, unsigned int cnt)
+{
+ unsigned sh_1, sh_2;
+ mp_size_t i;
+ mp_limb_t retval;
+
+ sh_1 = cnt;
+ sh_2 = GMP_LIMB_BITS - sh_1;
+ retval = up[n - 1] >> sh_2;
+
+#pragma _CRI ivdep
+ for (i = n - 1; i > 0; i--)
+ {
+#if 1
+ wp[i] = (up[i] << sh_1) | (up[i - 1] >> sh_2);
+#else
+ /* This is the recommended way, but at least on SV1 it is slower. */
+ wp[i] = _dshiftl (up[i], up[i - 1], sh_1);
+#endif
+ }
+
+ wp[0] = up[0] << sh_1;
+ return retval;
+}