1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
//===-- str{,case}cmp implementation ----------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_STRCMP_H
#define LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_STRCMP_H
#include "src/__support/macros/attributes.h" // LIBC_INLINE
#include "src/__support/macros/config.h" // LIBC_NAMESPACE_DECL
#include <stddef.h>
namespace LIBC_NAMESPACE_DECL {
template <typename Comp>
LIBC_INLINE constexpr int inline_strcmp(const char *left, const char *right,
Comp &&comp) {
// TODO: Look at benefits for comparing words at a time.
for (; *left && !comp(*left, *right); ++left, ++right)
;
return comp(*reinterpret_cast<const unsigned char *>(left),
*reinterpret_cast<const unsigned char *>(right));
}
template <typename Comp>
LIBC_INLINE constexpr int inline_strncmp(const char *left, const char *right,
size_t n, Comp &&comp) {
if (n == 0)
return 0;
// TODO: Look at benefits for comparing words at a time.
for (; n > 1; --n, ++left, ++right) {
char lc = *left;
if (!comp(lc, '\0') || comp(lc, *right))
break;
}
return comp(*reinterpret_cast<const unsigned char *>(left),
*reinterpret_cast<const unsigned char *>(right));
}
} // namespace LIBC_NAMESPACE_DECL
#endif // LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_STRCMP_H
|
