32 lines
901 B
C++
32 lines
901 B
C++
//===-- Implementation of wcsrchr -----------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/wchar/wcsrchr.h"
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#include "hdr/types/wchar_t.h"
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#include "src/__support/common.h"
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#include "src/__support/macros/config.h"
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#include "src/__support/macros/null_check.h"
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namespace LIBC_NAMESPACE_DECL {
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LLVM_LIBC_FUNCTION(const wchar_t *, wcsrchr, (const wchar_t *s, wchar_t c)) {
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LIBC_CRASH_ON_NULLPTR(s);
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const wchar_t *last_occurrence = nullptr;
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while (true) {
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if (*s == c)
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last_occurrence = s;
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if (*s == L'\0')
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return last_occurrence;
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++s;
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}
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}
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} // namespace LIBC_NAMESPACE_DECL
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