Sha256: 0ed4150337697d089e7e0e0a7e8812771bc9ae04217fa331228116873ab2c8b5
Contents?: true
Size: 1.97 KB
Versions: 24
Compression:
Stored size: 1.97 KB
Contents
// -*- c++ -*-
#pragma once
#ifndef __XOT_UTIL_H__
#define __XOT_UTIL_H__
#include <stdint.h>
#include <math.h>
#include <assert.h>
#include <xot/defs.h>
#include <xot/time.h>
namespace Xot
{
int bit2byte (int bits);
int byte2bit (int bytes);
void seed (uint value = (uint) (time() * 1000));
double random (double max_ = 1);
double random (double min_, double max_);
template <typename T = uint>
inline constexpr T
bit (int nth, T base = 0x1)
{
return (T) (base << nth);
}
template <typename T>
inline constexpr T
clip (T minval, T maxval, T value)
{
return value > maxval ? maxval : (value < minval ? minval : value);
}
inline constexpr double
deg2rad (double degree)
{
return degree / 180.0 * M_PI;
}
inline constexpr double
rad2deg (double radian)
{
return radian / M_PI * 180.0;
}
template <typename T>
inline void
add_flag (T* pvalue, uint flag)
{
assert(pvalue);
*pvalue |= flag;
}
template <typename T>
inline void
remove_flag (T* pvalue, uint flag)
{
assert(pvalue);
*pvalue &= ~flag;
}
template <typename T>
inline bool
has_flag (T value, uint flag)
{
if (flag == 0) return false;
return (value & flag) == flag;
}
template <typename T>
inline bool
check_and_remove_flag (T* pvalue, uint flag)
{
assert(pvalue);
bool has = has_flag(*pvalue, flag);
remove_flag(pvalue, flag);
return has;
}
static const uintptr_t POINTER_FLAG = 0x1;
template <typename T>
inline T*
set_pointer_flag (T* pointer, bool flag = true)
{
uintptr_t intval = *(uintptr_t*) &pointer;
if (flag)
intval |= POINTER_FLAG;
else
intval &= ~POINTER_FLAG;
return *(T**) &intval;
}
template <typename T>
inline const T*
set_pointer_flag (const T* pointer, bool flag = true)
{
return set_pointer_flag(const_cast<T*>(pointer), flag);
}
template <typename T>
inline bool
get_pointer_flag (const T* pointer)
{
const uintptr_t& intval = *(uintptr_t*) &pointer;
return intval & POINTER_FLAG;
}
}// Xot
#endif//EOH
Version data entries
24 entries across 24 versions & 1 rubygems