1//===-- Implementation of wcsspn ------------------------------------------===//
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/wchar/wcsspn.h"
10
11#include "hdr/types/size_t.h"
12#include "hdr/types/wchar_t.h"
13#include "src/__support/common.h"
14#include "src/__support/macros/config.h"
15
16namespace LIBC_NAMESPACE_DECL {
17
18bool check(wchar_t c, const wchar_t *s2) {
19 for (int n = 0; s2[n]; ++n) {
20 if (s2[n] == c)
21 return true;
22 }
23 return false;
24}
25LLVM_LIBC_FUNCTION(size_t, wcsspn, (const wchar_t *s1, const wchar_t *s2)) {
26 size_t i = 0;
27 for (; s1[i]; ++i) {
28 if (!check(s1[i], s2))
29 return i;
30 }
31 return i;
32}
33
34} // namespace LIBC_NAMESPACE_DECL
35

source code of libc/src/wchar/wcsspn.cpp