1 /* mpf_cmp_ui -- Compare a float with an unsigned integer.
3 Copyright 1993, 1994, 1995, 1999, 2001, 2002 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 Lesser General Public License as published by
9 the Free Software Foundation; either version 3 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 Lesser General Public
15 License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
24 mpf_cmp_ui (mpf_srcptr u, unsigned long int vval)
34 /* 1. Is U negative? */
37 /* We rely on usize being non-negative in the code that follows. */
42 /* 2. Are the exponents different (V's exponent == 1)? */
43 #if GMP_NAIL_BITS != 0
44 if (uexp > 1 + (vval > GMP_NUMB_MAX))
46 if (uexp < 1 + (vval > GMP_NUMB_MAX))
57 ulimb = up[usize - 1];
58 #if GMP_NAIL_BITS != 0
59 if (usize >= 2 && uexp == 2)
61 if ((ulimb >> GMP_NAIL_BITS) != 0)
63 ulimb = (ulimb << GMP_NUMB_BITS) | up[usize - 2];
69 /* 3. Compare the most significant mantissa limb with V. */
72 else if (ulimb < vval)
75 /* Ignore zeroes at the low end of U. */
82 /* 4. Now, if the number of limbs are different, we have a difference
83 since we have made sure the trailing limbs are not zero. */
87 /* Wow, we got zero even if we tried hard to avoid it. */