source:
vendors/XIOS/current/extern/boost/include/boost/functional/hash/detail/limits.hpp
@
3428
Last change on this file since 3428 was 3428, checked in by rblod, 12 years ago | |
---|---|
File size: 1.6 KB |
Line | |
---|---|
1 | |
2 | // Copyright 2005-2009 Daniel James. |
3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying |
4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
5 | // |
6 | // On some platforms std::limits gives incorrect values for long double. |
7 | // This tries to work around them. |
8 | |
9 | #if !defined(BOOST_FUNCTIONAL_HASH_DETAIL_LIMITS_HEADER) |
10 | #define BOOST_FUNCTIONAL_HASH_DETAIL_LIMITS_HEADER |
11 | |
12 | #if defined(_MSC_VER) && (_MSC_VER >= 1020) |
13 | # pragma once |
14 | #endif |
15 | |
16 | #include <boost/limits.hpp> |
17 | |
18 | // On OpenBSD, numeric_limits is not reliable for long doubles, but |
19 | // the macros defined in <float.h> are and support long double when STLport |
20 | // doesn't. |
21 | |
22 | #if defined(__OpenBSD__) || defined(_STLP_NO_LONG_DOUBLE) |
23 | #include <float.h> |
24 | #endif |
25 | |
26 | namespace boost |
27 | { |
28 | namespace hash_detail |
29 | { |
30 | template <class T> |
31 | struct limits : std::numeric_limits<T> {}; |
32 | |
33 | #if defined(__OpenBSD__) || defined(_STLP_NO_LONG_DOUBLE) |
34 | template <> |
35 | struct limits<long double> |
36 | : std::numeric_limits<long double> |
37 | { |
38 | static long double epsilon() { |
39 | return LDBL_EPSILON; |
40 | } |
41 | |
42 | static long double (max)() { |
43 | return LDBL_MAX; |
44 | } |
45 | |
46 | static long double (min)() { |
47 | return LDBL_MIN; |
48 | } |
49 | |
50 | BOOST_STATIC_CONSTANT(int, digits = LDBL_MANT_DIG); |
51 | BOOST_STATIC_CONSTANT(int, max_exponent = LDBL_MAX_EXP); |
52 | BOOST_STATIC_CONSTANT(int, min_exponent = LDBL_MIN_EXP); |
53 | #if defined(_STLP_NO_LONG_DOUBLE) |
54 | BOOST_STATIC_CONSTANT(int, radix = FLT_RADIX); |
55 | #endif |
56 | }; |
57 | #endif // __OpenBSD__ |
58 | } |
59 | } |
60 | |
61 | #endif |
Note: See TracBrowser
for help on using the repository browser.