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third_party/llvm/libc/src/string/strncmp.cpp
32 строки
933 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 strncmp -----------------------------------------===// // // 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/strncmp.h" #include "src/__support/common.h" #include <stddef.h> namespace __llvm_libc { // TODO: Look at benefits for comparing words at a time. LLVM_LIBC_FUNCTION(int, strncmp, (const char *left, const char *right, size_t n)) { if (n == 0) return 0; for (; n > 1; --n, ++left, ++right) { char lc = *left; if (lc == '\0' || lc != *right) break; } return *reinterpret_cast<const unsigned char *>(left) - *reinterpret_cast<const unsigned char *>(right); } } // namespace __llvm_libc