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Added 'specialized' versions of set_to for char*, signed char* and unsigned char* 'In' parameters.

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svn-id: r29523
This commit is contained in:
Johannes Schickel 2007-11-17 00:19:27 +00:00
parent 31180e7981
commit cec8b98201
1 changed files with 23 additions and 2 deletions
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25
common/algorithm.h
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@ -53,8 +53,29 @@ Out copy_if(In first, In last, Out dst, Op op) {
return dst;
}
// TODO: this is can be slower than memset for most normal data
// maybe specialize the template for char, short, int, long, long long
// Our 'specialized' 'set_to' template for char, signed char and unsigned char arrays.
// Since C++ doesn't support partial specialized template functions (currently) we
// are going this way...
// With this we assure the usage of memset for those, which should be
// faster than a simple loop like for the generic 'set_to'.
template<class Value>
signed char *set_to(signed char *first, signed char *last, Value val) {
memset(first, (val & 0xFF), last - first);
return last;
}
template<class Value>
unsigned char *set_to(unsigned char *first, unsigned char *last, Value val) {
memset(first, (val & 0xFF), last - first);
return last;
}
template<class Value>
char *set_to(char *first, char *last, Value val) {
memset(first, (val & 0xFF), last - first);
return last;
}
template<class In, class Value>
In set_to(In first, In last, Value val) {
while (first != last)