Imported gcc-4.4.3

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

diff --git a/mpfr/setmax.c b/mpfr/setmax.c
new file mode 100644 (file)
index 0000000..c510b60
--- /dev/null
+++ b/mpfr/setmax.c
@@ -0,0 +1,41 @@
+/* mpfr_setmax -- maximum representable floating-point number (raw version)
+
+Copyright 2002, 2003, 2004, 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"
+
+/* Note: the flags are not cleared and the current sign is kept. */
+
+void
+mpfr_setmax (mpfr_ptr x, mp_exp_t e)
+{
+  mp_size_t xn, i;
+  int sh;
+  mp_limb_t *xp;
+
+  MPFR_SET_EXP (x, e);
+  xn = 1 + (MPFR_PREC(x) - 1) / BITS_PER_MP_LIMB;
+  sh = (mp_prec_t) xn * BITS_PER_MP_LIMB - MPFR_PREC(x);
+  xp = MPFR_MANT(x);
+  xp[0] = MP_LIMB_T_MAX << sh;
+  for (i = 1; i < xn; i++)
+    xp[i] = MP_LIMB_T_MAX;
+}