| //===-- Implementation of wmemcmp -----------------------------------------===// |
| // |
| // 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/wchar/wmemcmp.h" |
| |
| #include "hdr/types/size_t.h" |
| #include "hdr/types/wchar_t.h" |
| #include "src/__support/common.h" |
| #include "src/__support/macros/config.h" |
| #include "src/__support/macros/null_check.h" // LIBC_CRASH_ON_NULLPTR |
| |
| namespace LIBC_NAMESPACE_DECL { |
| |
| LLVM_LIBC_FUNCTION(int, wmemcmp, |
| (const wchar_t *s1, const wchar_t *s2, size_t n)) { |
| LIBC_CRASH_ON_NULLPTR(s1); |
| LIBC_CRASH_ON_NULLPTR(s2); |
| for (size_t i = 0; i < n; ++i) { |
| if (s1[i] != s2[i]) |
| return (int)(s1[i] - s2[i]); |
| } |
| // If it reaches the end, all n values must be the same. |
| return 0; |
| } |
| |
| } // namespace LIBC_NAMESPACE_DECL |
