int.hpp

#pragma once
 
// STD
#include <stdint.h>>
 
#define OPTI_INT8_MAX   0x7F
#define OPTI_UINT8_MAX  0xFF
 
#define OPTI_INT16_MAX  0x7FFF
#define OPTI_UINT16_MAX 0xFFFF
 
#define OPTI_INT32_MAX  0x7FFFFFFF
#define OPTI_UINT32_MAX 0xFFFFFFFF
 
#define OPTI_INT64_MAX  0x7FFFFFFFFFFFFFFF
#define OPTI_UINT64_MAX 0xFFFFFFFFFFFFFFFF
 
 
namespace Optibits
{
 
  typedef int8_t int8;
  typedef uint8_t uint8;
  typedef int16_t int16;
  typedef uint16_t uint16;
  typedef int32_t int32;
  typedef uint32_t uint32;
  typedef int64_t int64;
  typedef uint64_t uint64;
 
  static inline uint16 swapuint16(uint16 x)
  {
    return (x >> 8) | (x << 8);
  }
 
  static inline uint32 swapuint32(uint32 x)
  {
    return ((x & 0x000000FF) << 24) |
           ((x & 0x0000FF00) <<  8) |
           ((x & 0x00FF0000) >>  8) |
           ((x & 0xFF000000) >> 24);
  }
 
  static inline uint64 swapuint64(uint64 x)
  {
    return ((x << 56) & 0xFF00000000000000ULL) | ((x << 40) & 0x00FF000000000000ULL) |
      ((x << 24) & 0x0000FF0000000000ULL) | ((x <<  8) & 0x000000FF00000000ULL) |
      ((x >>  8) & 0x00000000FF000000ULL) | ((x >> 24) & 0x0000000000FF0000ULL) |
      ((x >> 40) & 0x000000000000FF00ULL) | ((x >> 56) & 0x00000000000000FFULL);
  }
 
}