Annotation of OpenXM_contrib/gmp/mpz/fits_slong_p.c, Revision 1.1.1.1
1.1 maekawa 1: /* int mpz_fits_X_p (mpz_t src) -- Return whether src fits the C type X.
2:
3: Copyright (C) 1997, 2000 Free Software Foundation, Inc.
4:
5: This file is part of the GNU MP Library.
6:
7: The GNU MP Library is free software; you can redistribute it and/or modify
8: it under the terms of the GNU Lesser General Public License as published by
9: the Free Software Foundation; either version 2.1 of the License, or (at your
10: option) any later version.
11:
12: The GNU MP Library is distributed in the hope that it will be useful, but
13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15: License for more details.
16:
17: You should have received a copy of the GNU Lesser General Public License
18: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20: MA 02111-1307, USA. */
21:
22: #include "gmp.h"
23: #include "gmp-impl.h"
24:
25: int
26: #if __STDC__
27: mpz_fits_slong_p (mpz_srcptr src)
28: #else
29: mpz_fits_slong_p (src)
30: mpz_srcptr src;
31: #endif
32: {
33: mp_size_t size;
34: mp_limb_t mpl;
35:
36: mpl = PTR(src)[0];
37: size = SIZ(src);
38: if (size > 0)
39: {
40: if (size > 1)
41: return 0;
42: return mpl < ~((~(unsigned long int) 0) >> 1);
43: }
44: else
45: {
46: if (size < -1)
47: return 0;
48: return mpl <= ~((~(unsigned long int) 0) >> 1);
49: }
50: }
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