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aperisic

Of course we can create a template to get absolute value from any type of integers:

Code:

#define BYTE_SIZE 8
template  <typename  T>
T mabs(T x)
{
	T t = x >> (sizeof(T)*BYTE_SIZE - 1);
	return  t ^ (x + t);
}

usage

Code:

long int z = mabs<long int>(-11547);

Now, it looks funny since it seems as if this can be used to get "absolute" value of any structure or class. It may but only if >> is defined. For example >> is not defined for double and float.

aperisic Newbie Member
13Feb2008,18:37
	Of course we can create a template to get absolute value from any type of integers: Code: #define BYTE_SIZE 8 template <typename T> T mabs(T x) { T t = x >> (sizeof(T)*BYTE_SIZE - 1); return t ^ (x + t); } usage Code: long int z = mabs<long int>(-11547); Now, it looks funny since it seems as if this can be used to get "absolute" value of any structure or class. It may but only if >> is defined. For example >> is not defined for double and float.