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Sprout/sprout/cstring/strcspn.hpp
2012-12-22 01:02:49 +09:00

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#ifndef SPROUT_CSTRING_STRCSPN_HPP
#define SPROUT_CSTRING_STRCSPN_HPP
#include <cstddef>
#include <sprout/config.hpp>
#include <sprout/cstring/strchr.hpp>
namespace sprout {
// 7.21.5.3 strcspn ŠÖ<C5A0>
inline SPROUT_CONSTEXPR std::size_t
strcspn(char const* s1, char const* s2) {
return !*s1 || sprout::strchr(s2, *s1) ? 0
: 1 + sprout::strcspn(s1 + 1, s2)
;
}
} // namespace sprout
#endif // #ifndef SPROUT_CSTRING_STRCSPN_HPP