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Sprout/sprout/cwchar/wmemchr.hpp

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#ifndef SPROUT_CWCHAR_WMEMCHR_HPP
#define SPROUT_CWCHAR_WMEMCHR_HPP
#include <cstddef>
#include <sprout/config.hpp>
namespace sprout {
// Copyright (C) 2011 RiSK (sscrisk)
namespace detail {
inline SPROUT_CONSTEXPR wchar_t const* wmemchr_impl(wchar_t const* s, wchar_t c, std::size_t n) {
return !n ? 0
: *s == c ? s
: sprout::detail::wmemchr_impl(s + 1, c, n - 1)
;
}
} // namespace detail
inline SPROUT_CONSTEXPR wchar_t const* wmemchr(wchar_t const* s, wchar_t c, size_t n) {
return sprout::detail::wmemchr_impl(s, c, n);
}
inline SPROUT_CONSTEXPR wchar_t* wmemchr(wchar_t* s, wchar_t c, size_t n) {
return const_cast<wchar_t*>(
sprout::detail::wmemchr_impl(s, c, n)
);
}
} // namespace sprout
#endif // #ifndef SPROUT_CWCHAR_WMEMCHR_HPP