Imported gcc-4.4.3

[msp430-gcc.git] / gmp / mpf / int_p.c

diff --git a/gmp/mpf/int_p.c b/gmp/mpf/int_p.c
new file mode 100644 (file)
index 0000000..d43dcf8
--- /dev/null
+++ b/gmp/mpf/int_p.c
@@ -0,0 +1,48 @@
+/* mpf_integer_p -- test whether an mpf is an integer */
+
+/*
+Copyright 2001, 2002 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"
+
+
+int
+mpf_integer_p (mpf_srcptr f)
+{
+  mp_srcptr ptr;
+  mp_exp_t exp;
+  mp_size_t size, frac, i;
+
+  size = SIZ (f);
+  if (size == 0)
+    return 1;  /* zero is an integer */
+
+  exp = EXP (f);
+  if (exp <= 0)
+    return 0;  /* has only fraction limbs */
+
+  /* any fraction limbs must be zero */
+  frac = ABS (size) - exp;
+  ptr = PTR (f);
+  for (i = 0; i < frac; i++)
+    if (ptr[i] != 0)
+      return 0;
+
+  return 1;
+}