mfbt/NumericLimits.h@6474c204b198 (annotated)
mfbt/NumericLimits.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | /* Compatibility with std::numeric_limits<char16_t>. */ |
| michael@0 | 8 | |
| michael@0 | 9 | #ifndef mozilla_NumericLimits_h |
| michael@0 | 10 | #define mozilla_NumericLimits_h |
| michael@0 | 11 | |
| michael@0 | 12 | #include "mozilla/Char16.h" |
| michael@0 | 13 | |
| michael@0 | 14 | #include <limits> |
| michael@0 | 15 | #include <stdint.h> |
| michael@0 | 16 | |
| michael@0 | 17 | namespace mozilla { |
| michael@0 | 18 | |
| michael@0 | 19 | /** |
| michael@0 | 20 | * The NumericLimits class provides a compatibility layer with std::numeric_limits |
| michael@0 | 21 | * for char16_t, otherwise it is exactly the same as std::numeric_limits. |
| michael@0 | 22 | * Code which does not need std::numeric_limits<char16_t> should avoid using |
| michael@0 | 23 | * NumericLimits. |
| michael@0 | 24 | */ |
| michael@0 | 25 | template<typename T> |
| michael@0 | 26 | class NumericLimits : public std::numeric_limits<T> |
| michael@0 | 27 | { |
| michael@0 | 28 | }; |
| michael@0 | 29 | |
| michael@0 | 30 | #ifdef MOZ_CHAR16_IS_NOT_WCHAR |
| michael@0 | 31 | template<> |
| michael@0 | 32 | class NumericLimits<char16_t> : public std::numeric_limits<uint16_t> |
| michael@0 | 33 | { |
| michael@0 | 34 | // char16_t and uint16_t numeric limits should be exactly the same. |
| michael@0 | 35 | }; |
| michael@0 | 36 | #endif |
| michael@0 | 37 | |
| michael@0 | 38 | } // namespace mozilla |
| michael@0 | 39 | |
| michael@0 | 40 | #endif /* mozilla_NumericLimits_h */ |
