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third_party/llvm/libc/src/string/strchr.cpp
25 строк
852 B
Constantine Tarasenkov
python3 utils/fetch_sources.py
04 сен 2021, 14:35
04 сен 2021, 14:35
4a0ab4c
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//===-- Implementation of strchr ------------------------------------------===// // // 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/string/strchr.h" #include "src/__support/common.h" namespace __llvm_libc { // TODO: Look at performance benefits of comparing words. LLVM_LIBC_FUNCTION(char *, strchr, (const char *src, int c)) { unsigned char *str = const_cast<unsigned char *>(reinterpret_cast<const unsigned char *>(src)); const unsigned char ch = c; for (; *str && *str != ch; ++str) ; return *str == ch ? reinterpret_cast<char *>(str) : nullptr; } } // namespace __llvm_libc