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1//===-- str{,case}cmp implementation ----------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_STRCMP_H10#define LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_STRCMP_H11 12#include "src/__support/macros/attributes.h" // LIBC_INLINE13#include "src/__support/macros/config.h" // LIBC_NAMESPACE_DECL14#include <stddef.h>15 16namespace LIBC_NAMESPACE_DECL {17 18template <typename Comp>19LIBC_INLINE constexpr int inline_strcmp(const char *left, const char *right,20 Comp &&comp) {21 // TODO: Look at benefits for comparing words at a time.22 for (; *left && !comp(*left, *right); ++left, ++right)23 ;24 return comp(*reinterpret_cast<const unsigned char *>(left),25 *reinterpret_cast<const unsigned char *>(right));26}27 28template <typename Comp>29LIBC_INLINE constexpr int inline_strncmp(const char *left, const char *right,30 size_t n, Comp &&comp) {31 if (n == 0)32 return 0;33 34 // TODO: Look at benefits for comparing words at a time.35 for (; n > 1; --n, ++left, ++right) {36 char lc = *left;37 if (!comp(lc, '\0') || comp(lc, *right))38 break;39 }40 return comp(*reinterpret_cast<const unsigned char *>(left),41 *reinterpret_cast<const unsigned char *>(right));42}43 44} // namespace LIBC_NAMESPACE_DECL45 46#endif // LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_STRCMP_H47