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#ifndef UTILITY_H
#define UTILITY_H
#include "Runtime/Allocator/MemoryMacros.h"
#define UNUSED(x) (void)sizeof(x)
#define SAFE_RELEASE(obj) if (obj) { (obj)->Release(); (obj) = NULL; } else {}
#define SAFE_RELEASE_LABEL(obj,label) if (obj) { (obj)->Release(label); (obj) = NULL; } else {}
template <class T0, class T1>
inline void CopyData (T0 *dst, const T1 *src, long int inHowmany)
{
for (long int i=0;i<inHowmany;i++)
{
dst[i] = src[i];
}
}
template <class DataType>
inline void CopyOverlappingData (DataType *dst, const DataType *src, long int inHowmany)
{
if (dst < src)
{
for (long int i=0;i<inHowmany;i++)
{
dst[i] = src[i];
}
}
else if (dst > src)
{
for (long int i=inHowmany-1;i>=0;i--)
{
dst[i] = src[i];
}
}
}
template <class DataType>
inline void CopyRange (DataType *dst, const DataType *src, long int inStart, long int inHowmany)
{
for (long int i=inStart;i<inHowmany+inStart;i++)
{
dst[i] = src[i];
}
}
template <class DataType>
inline void CopyData (DataType *dst, const DataType src, long int inHowmany)
{
for (long int i=0;i<inHowmany;i++)
{
dst[i] = src;
}
}
template <class DataType>
inline void CopyDataReverse (DataType *dst, const DataType *src, long int inHowmany)
{
for (long int i=0;i<inHowmany;i++)
{
dst[i] = src[inHowmany-1-i];
}
}
template <class DataType>
inline bool CompareArrays (const DataType *lhs, const DataType *rhs, long int arraySize)
{
for (long int i=0; i<arraySize; i++)
{
if (lhs[i] != rhs[i])
return false;
}
return true;
}
template <class DataType>
inline bool CompareMemory (const DataType& lhs, const DataType& rhs)
{
#ifdef ALIGN_OF
// We check at compile time if it's safe to cast data to int*
if (ALIGN_OF(DataType) >= ALIGN_OF(int) && (sizeof(DataType) % sizeof(int))==0)
{
return CompareArrays((const int*)&lhs, (const int*)&rhs, sizeof(DataType) / sizeof(int));
}
#endif
return CompareArrays((const char*)&lhs, (const char*)&rhs, sizeof(DataType));
}
template <class T>
class UNITY_AutoDelete
{
public:
UNITY_AutoDelete() : m_val(T()) { }
~UNITY_AutoDelete() { if(m_val) UNITY_DELETE ( m_val, m_label ); }
void Assign(T val, MemLabelId label) { m_val = val; m_label = label; return *this; }
bool operator!() { return !m_val; }
/* Releases the internal pointer without deleting */
T releasePtr() { T tmp = m_val; m_val = T(); return tmp; }
private:
UNITY_AutoDelete &operator=(T val);
UNITY_AutoDelete(const UNITY_AutoDelete<T>& other); // disabled
void operator=(const UNITY_AutoDelete<T>& other); // disabled
T m_val;
MemLabelId m_label;
};
class AutoFree
{
public:
AutoFree() : m_val(NULL), m_label(kMemDefault) { }
~AutoFree() { if(m_val) UNITY_FREE ( m_label, m_val ); }
bool operator!() { return !m_val; }
void Assign(void* val, MemLabelId label) { m_label = label; m_val = val; }
/* Releases the internal pointer without deleting */
void* releasePtr() { void* tmp = m_val; m_val = NULL; return tmp; }
private:
AutoFree &operator=(void* val); // disabled
AutoFree(const AutoFree& other); // disabled
void operator=(const AutoFree& other); // disabled
void* m_val;
MemLabelId m_label;
};
template <class T>
inline T clamp (const T&t, const T& t0, const T& t1)
{
if (t < t0)
return t0;
else if (t > t1)
return t1;
else
return t;
}
template <>
inline float clamp (const float&t, const float& t0, const float& t1)
{
#if UNITY_XENON || UNITY_PS3
return FloatMin(FloatMax(t, t0), t1);
#else
if (t < t0)
return t0;
else if (t > t1)
return t1;
else
return t;
#endif
}
template <class T>
inline T clamp01 (const T& t)
{
if (t < 0)
return 0;
else if (t > 1)
return 1;
else
return t;
}
template <>
inline float clamp01<float> (const float& t)
{
#if UNITY_XENON || UNITY_PS3
return FloatMin(FloatMax(t, 0.0f), 1.0f);
#else
if (t < 0.0F)
return 0.0F;
else if (t > 1.0F)
return 1.0F;
else
return t;
#endif
}
// Asserts if from is NULL or can't be cast to type To
template<class To, class From> inline
To assert_cast (From from)
{
AssertIf (dynamic_cast<To> (from) == NULL);
return static_cast<To> (from);
}
inline float SmoothStep (float from, float to, float t)
{
t = clamp01(t);
t = -2.0F * t*t*t + 3.0F * t*t;
return to * t + from * (1.0f - t);
}
// Rounds value down.
// Note: base must be power of two value.
inline UInt32 RoundDown (UInt32 value, SInt32 base)
{
return value & (-base);
}
// Rounds value up.
// Note: base must be power of two value.
inline UInt32 RoundUp (UInt32 value, SInt32 base)
{
return (value + base - 1) & (-base);
}
template<class T>
inline T* Stride (T* p, size_t offset)
{
return reinterpret_cast<T*>((char*)p + offset);
}
#endif // include-guard
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