1/* Header file for misc range functions. -*- C++ -*-
2 Copyright (C) 2017-2023 Free Software Foundation, Inc.
3 Contributed by Aldy Hernandez <aldyh@redhat.com>.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3. If not see
19<http://www.gnu.org/licenses/>. */
20
21#ifndef GCC_RANGE_H
22#define GCC_RANGE_H
23
24value_range range_zero (tree type);
25value_range range_nonzero (tree type);
26value_range range_positives (tree type);
27value_range range_negatives (tree type);
28
29// Return an irange instance that is a boolean TRUE.
30
31inline int_range<1>
32range_true (tree type = boolean_type_node)
33{
34 unsigned prec = TYPE_PRECISION (type);
35 return int_range<1> (type, wi::one (precision: prec), wi::one (precision: prec));
36}
37
38// Return an irange instance that is a boolean FALSE.
39
40inline int_range<1>
41range_false (tree type = boolean_type_node)
42{
43 unsigned prec = TYPE_PRECISION (type);
44 return int_range<1> (type, wi::zero (precision: prec), wi::zero (precision: prec));
45}
46
47// Return an irange that covers both true and false.
48
49inline int_range<1>
50range_true_and_false (tree type = boolean_type_node)
51{
52 unsigned prec = TYPE_PRECISION (type);
53 if (prec == 1)
54 return int_range<1> (type);
55 return int_range<1> (type, wi::zero (precision: prec), wi::one (precision: prec));
56}
57
58#endif // GCC_RANGE_H
59

source code of gcc/range.h