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//===-- Implementation of wcsncpy -----------------------------------------===//
//
// 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/wcsncpy.h"
#include "hdr/types/size_t.h"
#include "hdr/types/wchar_t.h"
#include "src/__support/common.h"
#include "src/__support/macros/config.h"
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(wchar_t *, wcsncpy,
(wchar_t *__restrict s1, const wchar_t *__restrict s2,
size_t n)) {
size_t i = 0;
// Copy up until \0 is found.
for (; i < n && s2[i] != L'\0'; ++i)
s1[i] = s2[i];
// When s2 is shorter than n, append \0.
for (; i < n; ++i)
s1[i] = L'\0';
return s1;
}
} // namespace LIBC_NAMESPACE_DECL
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