1 /* mpf_cmp_si -- Compare a float with a signed integer.
3 Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Library General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or (at your
10 option) any later version.
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 Library General Public
15 License for more details.
17 You should have received a copy of the GNU Library 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. */
27 mpf_cmp_si (mpf_srcptr u, long int vslimb)
29 mpf_cmp_si (u, vslimb)
42 /* 1. Are the signs different? */
43 if ((usize < 0) == (vslimb < 0)) /* don't use xor, type size may differ */
45 /* U and V are both non-negative or both negative. */
48 return -(vslimb != 0);
56 /* Either U or V is negative, but not both. */
57 return usize >= 0 ? 1 : -1;
60 /* U and V have the same sign and are both non-zero. */
62 usign = usize >= 0 ? 1 : -1;
64 /* 2. Are the exponents different (V's exponent == 1)? */
71 vslimb = ABS (vslimb);
75 #define STRICT_MPF_NORMALIZATION 0
76 #if ! STRICT_MPF_NORMALIZATION
77 /* Ignore zeroes at the low end of U and V. */
85 /* 3. Now, if the number of limbs are different, we have a difference
86 since we have made sure the trailing limbs are not zero. */
90 /* 4. Compare the mantissas. */
93 else if (*up < vslimb)
96 /* Wow, we got zero even if we tried hard to avoid it. */