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