| //===-- 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 |