Sprout/sprout/cstring/strrchr.hpp
2012-04-01 22:15:09 +09:00

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#ifndef SPROUT_CSTRING_STRRCHR_HPP
#define SPROUT_CSTRING_STRRCHR_HPP
#include <cstddef>
#include <sprout/config.hpp>
namespace sprout {
// Copyright (C) 2011 RiSK (sscrisk)
// 7.21.5.5 strrchr ŠÖ<C5A0>
inline SPROUT_CONSTEXPR char const* strrchr(char const* s, int c) {
return *s == static_cast<char>(c) && (!*s || !sprout::strrchr(s + 1, c))? s
: !*s ? nullptr
: sprout::strrchr(s + 1, c)
;
}
inline SPROUT_CONSTEXPR char* strrchr(char* s, int c) {
return const_cast<char*>(sprout::strrchr(const_cast<char const*>(s), c));
}
} // namespace sprout
#endif // #ifndef SPROUT_CSTRING_STRRCHR_HPP