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