* mpf/fits_s.i: Renamed and adapted from mpf/fits_s.c.

1 files changed, 52 insertions, 0 deletions

diff --git a/mpf/fits_s.i b/mpf/fits_s.i
new file mode 100644
index 000000000..afcdd266c
--- /dev/null
+++ b/mpf/fits_s.i
@@ -0,0 +1,52 @@
+/* mpf_fits_s*_p -- test whether an mpf fits a C signed type.
+
+Copyright 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 2.1 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; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+
+/* Notice this is equivalent to mpz_set_f + mpz_fits_s*_p.  */
+
+int
+FUNCTION (mpf_srcptr f)
+{
+  int        size, abs_size, i;
+  mp_exp_t   exp;
+  mp_srcptr  ptr;
+
+  size = SIZ(f);
+  if (size == 0)
+    return 1;  /* zero fits */
+
+  exp = EXP(f);
+  if (exp != 1)  /* only 1 limb above the radix point */
+    return 0;
+
+  /* any fraction limbs must be zero */
+  abs_size = ABS(size);
+  ptr = PTR(f);
+  for (i = 0; i < abs_size-1; i++)
+    if (ptr[i] != 0)
+      return 0;
+
+  return ptr[abs_size-1]
+    <= (size > 0 ? (mp_limb_t) MAXIMUM : - (mp_limb_t) MINIMUM);
+}