Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpn / cray / cfp / submul_1.c

diff --git a/gmp/mpn/cray/cfp/submul_1.c b/gmp/mpn/cray/cfp/submul_1.c
new file mode 100644 (file)
index 0000000..0507d0e
--- /dev/null
+++ b/gmp/mpn/cray/cfp/submul_1.c
@@ -0,0 +1,38 @@
+/* mpn_submul_1 for Cray PVP.
+
+Copyright 1996, 2000, 2001 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 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.
+
+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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
+
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+mp_limb_t
+mpn_submul_1 (mp_ptr rp, mp_srcptr up, mp_size_t n, mp_limb_t limb)
+{
+  mp_limb_t p0[n], p1[n], tp[n];
+  mp_limb_t cy_limb;
+
+  GMPN_MULWW (p1, p0, up, &n, &limb);
+  cy_limb = mpn_sub_n (tp, rp, p0, n);
+  rp[0] = tp[0];
+  if (n != 1)
+    cy_limb += mpn_sub_n (rp + 1, tp + 1, p1, n - 1);
+  cy_limb += p1[n - 1];
+
+  return cy_limb;
+}