Imported gcc-4.4.3

[msp430-gcc.git] / mpfr / si_op.c

diff --git a/mpfr/si_op.c b/mpfr/si_op.c
new file mode 100644 (file)
index 0000000..a7e80f9
--- /dev/null
+++ b/mpfr/si_op.c
@@ -0,0 +1,57 @@
+/* mpfr_add_si -- add a floating-point number with a machine integer
+   mpfr_sub_si -- sub  a floating-point number with a machine integer
+   mpfr_si_sub -- sub  a machine number with a floating-point number
+
+Copyright 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR 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 2.1 of the License, or (at your
+option) any later version.
+
+The GNU MPFR 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 MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#include "mpfr-impl.h"
+
+int
+mpfr_add_si (mpfr_ptr y, mpfr_srcptr x, long int u, mp_rnd_t rnd_mode)
+{
+  if (u >= 0)
+    return mpfr_add_ui (y, x, u, rnd_mode);
+  else
+    return mpfr_sub_ui (y, x, -u, rnd_mode);
+}
+
+int
+mpfr_sub_si (mpfr_ptr y, mpfr_srcptr x, long int u, mp_rnd_t rnd_mode)
+{
+  if (u >= 0)
+    return mpfr_sub_ui (y, x, u, rnd_mode);
+  else
+    return mpfr_add_ui (y, x, -u, rnd_mode);
+}
+
+int
+mpfr_si_sub (mpfr_ptr y, long int u, mpfr_srcptr x, mp_rnd_t rnd_mode)
+{
+  if (u >= 0)
+    return mpfr_ui_sub (y, u, x, rnd_mode);
+  else
+    {
+    int res = -mpfr_add_ui (y, x, -u, MPFR_INVERT_RND (rnd_mode));
+    MPFR_CHANGE_SIGN (y);
+    return res;
+    }
+}
+