// Copyright 2008 Google Inc. All Rights Reserved.
//
// Basic integer type definitions for various platforms
//
// This code is compiled directly on many platforms, including client
// platforms like Windows, Mac, and embedded systems.  Before making
// any changes here, make sure that you're not breaking any platforms.
//

#ifndef BASE_INT_TYPES_H_
#define BASE_INT_TYPES_H_

#include <cstdint>
// Standard typedefs
// All Google2 code is compiled with -funsigned-char to make "char"
// unsigned.  Google2 code therefore doesn't need a "uchar" type.
typedef signed char         schar;
typedef signed char         int8;
typedef short               int16;
typedef int                 int32;
typedef int64_t             int64;

// NOTE: unsigned types are DANGEROUS in loops and other arithmetical
// places.  Use the signed types unless your variable represents a bit
// pattern (eg a hash value) or you really need the extra bit.  Do NOT
// use 'unsigned' to express "this value should always be positive";
// use assertions for this.

typedef unsigned char      uint8;
typedef unsigned short     uint16;
typedef unsigned int       uint32;
typedef uint64_t           uint64;

// A type to represent a Unicode code-point value. As of Unicode 4.0,
// such values require up to 21 bits.
// (For type-checking on pointers, make this explicitly signed,
// and it should always be the signed version of whatever int32 is.)
typedef signed int         char32;

//  A type to represent a natural machine word (for e.g. efficiently
// scanning through memory for checksums or index searching). Don't use
// this for storing normal integers. Ideally this would be just
// unsigned int, but our 64-bit architectures use the LP64 model
// (http://www.opengroup.org/public/tech/aspen/lp64_wp.htm), hence
// their ints are only 32 bits. We want to use the same fundamental
// type on all archs if possible to preserve *printf() compatability.
typedef unsigned long      uword_t;

// A signed natural machine word. In general you want to use "int"
// rather than "sword_t"
typedef long sword_t;

// long long macros to be used because gcc and vc++ use different suffixes,
// and different size specifiers in format strings
#undef GG_LONGLONG
#undef GG_ULONGLONG
#undef GG_LL_FORMAT

#ifdef COMPILER_MSVC     /* if Visual C++ */

// VC++ long long suffixes
#define GG_LONGLONG(x) x##I64
#define GG_ULONGLONG(x) x##UI64

// Length modifier in printf format string for int64's (e.g. within %d)
#define GG_LL_FORMAT "I64"  // As in printf("%I64d", ...)
#define GG_LL_FORMAT_W L"I64"

#else   /* not Visual C++ */

#define GG_LONGLONG(x) x##LL
#define GG_ULONGLONG(x) x##ULL
#define GG_LL_FORMAT "ll"  // As in "%lld". Note that "q" is poor form also.
#define GG_LL_FORMAT_W L"ll"

#endif  // COMPILER_MSVC


static const uint8  kuint8max  = (( uint8) 0xFF);
static const uint16 kuint16max = ((uint16) 0xFFFF);
static const uint32 kuint32max = ((uint32) 0xFFFFFFFF);
static const uint64 kuint64max = ((uint64) GG_LONGLONG(0xFFFFFFFFFFFFFFFF));
static const  int8  kint8min   = ((  int8) 0x80);
static const  int8  kint8max   = ((  int8) 0x7F);
static const  int16 kint16min  = (( int16) 0x8000);
static const  int16 kint16max  = (( int16) 0x7FFF);
static const  int32 kint32min  = (( int32) 0x80000000);
static const  int32 kint32max  = (( int32) 0x7FFFFFFF);
static const  int64 kint64min  = (( int64) GG_LONGLONG(0x8000000000000000));
static const  int64 kint64max  = (( int64) GG_LONGLONG(0x7FFFFFFFFFFFFFFF));


#endif  // BASE_INT_TYPES_H_