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