1 //===-- Implementation of strcmp ------------------------------------------===//
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-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "src/string/strcmp.h"
10 
11 #include "src/__support/common.h"
12 
13 namespace __llvm_libc {
14 
15 // TODO: Look at benefits for comparing words at a time.
LLVM_LIBC_ENTRYPOINT(strcmp)16 int LLVM_LIBC_ENTRYPOINT(strcmp)(const char *left, const char *right) {
17   for (; *left && *left == *right; ++left, ++right)
18     ;
19   return *reinterpret_cast<const unsigned char *>(left) -
20          *reinterpret_cast<const unsigned char *>(right);
21 }
22 
23 } // namespace __llvm_libc
24