utility.h

matlab的视频接口程序

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//	utility.h
//		Utitlity functions used by the Matlab VFM module
//		These functions are type safe.
//	Copyright
//		(c) 1998 School of Information Systems 
//	Author
//		Farzad Pezeshkpour
//	Revision
//		1998/12/16
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#ifndef __UTITLITY__
#define __UTITLITY__


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// Safe deletion of pointers
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template <class T> T* delete_ptr (T *&ptr) {
	if (ptr != NULL) {
		delete ptr;
		ptr = NULL;
	}
	return ptr;
}

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// Safe deletion of arrays
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template <class T> T* delete_array (T *&ptr) {
	if (ptr != NULL) {
		delete []ptr;
		ptr = NULL;
	}
	return ptr;
}

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// Max
// Compares two values. Returns the largest.
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template <class T> T Max (T a, T b) {
	return (a > b ? a : b);
}

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// Min
// Returns the smallest of two values
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template <class T> T Min(T a, T b) {
	return (a > b ? b : a);
}

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// Abs
// Returns the absolute of a numeric type
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template <class T> T Abs (T a) {
	return (a > 0 ? a : -a);
}


#endif //__UTITLITY__