basictypes.h revision 116680a4aac90f2aa7413d9095a592090648e557
1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// This file contains definitions of our old basic integral types 6// ((u)int{8,16,32,64}) and further includes. I recommend that you use the C99 7// standard types instead, and include <stdint.h>/<stddef.h>/etc. as needed. 8// Note that the macros and macro-like constructs that were formerly defined in 9// this file are now available separately in base/macros.h. 10 11#ifndef BASE_BASICTYPES_H_ 12#define BASE_BASICTYPES_H_ 13 14#include <limits.h> // So we can set the bounds of our types. 15#include <stddef.h> // For size_t. 16#include <stdint.h> // For intptr_t. 17 18#include "base/macros.h" 19#include "base/port.h" // Types that only need exist on certain systems. 20 21// DEPRECATED: Please use (u)int{8,16,32,64}_t instead (and include <stdint.h>). 22typedef int8_t int8; 23typedef uint8_t uint8; 24typedef int16_t int16; 25typedef int32_t int32; 26typedef uint16_t uint16; 27typedef uint32_t uint32; 28 29// TODO(vtl): Figure what's up with the 64-bit types. Can we just define them as 30// |int64_t|/|uint64_t|? 31// The NSPR system headers define 64-bit as |long| when possible, except on 32// Mac OS X. In order to not have typedef mismatches, we do the same on LP64. 33// 34// On Mac OS X, |long long| is used for 64-bit types for compatibility with 35// <inttypes.h> format macros even in the LP64 model. 36#if defined(__LP64__) && !defined(OS_MACOSX) && !defined(OS_OPENBSD) 37typedef long int64; 38typedef unsigned long uint64; 39#else 40typedef long long int64; 41typedef unsigned long long uint64; 42#endif 43 44// DEPRECATED: Please use std::numeric_limits (from <limits>) instead. 45const uint8 kuint8max = 0xFF; 46const uint16 kuint16max = 0xFFFF; 47const uint32 kuint32max = 0xFFFFFFFF; 48const uint64 kuint64max = 0xFFFFFFFFFFFFFFFFULL; 49const int8 kint8min = -0x7F - 1; 50const int8 kint8max = 0x7F; 51const int16 kint16min = -0x7FFF - 1; 52const int16 kint16max = 0x7FFF; 53const int32 kint32min = -0x7FFFFFFF - 1; 54const int32 kint32max = 0x7FFFFFFF; 55const int64 kint64min = -0x7FFFFFFFFFFFFFFFLL - 1; 56const int64 kint64max = 0x7FFFFFFFFFFFFFFFLL; 57 58#endif // BASE_BASICTYPES_H_ 59