Home » U++ Library support » U++ Core » Defs.h minmax() change/fix
| Re: Defs.h minmax() change/fix [message #25325 is a reply to message #24069] |
Wed, 17 February 2010 10:24   |
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kohait00
Messages: 939
Registered: July 2009
Location: Germany
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Experienced Contributor |
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yiy are right, the compiler warns
warning C4172: returning address of local variable or temporary
using a
s = min(max(a, b), c);
//instead of
s = minmax(a, b, c);
does not produce this warning. i still dont get why.
maybe to have a
#define minmax(x, _min, max) min(max(x, _min), _max)
is a choice.
or at least
template <class T>
inline T minmax(const T& x, const T& _min, const T& _max) { return min(max(x, _min), _max); }
reducing the need of object copy by 60%  (roughly)
dont know it this is that much of speed saving, but using refs instead of temp copies is better anyway, isnt it?
[Updated on: Wed, 17 February 2010 10:25] Report message to a moderator |
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