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//===-- Implementation of strncat -----------------------------------------===//
//
// 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/string/strncat.h"
#include "src/__support/macros/config.h"
#include "src/__support/macros/null_check.h"
#include "src/string/string_utils.h"
#include "src/__support/common.h"
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(char *, strncat,
(char *__restrict dest, const char *__restrict src,
size_t count)) {
if (count) {
LIBC_CRASH_ON_NULLPTR(dest);
LIBC_CRASH_ON_NULLPTR(src);
}
size_t dest_length = internal::string_length(dest);
size_t i;
for (i = 0; i < count && src[i] != '\0'; ++i)
dest[dest_length + i] = src[i];
dest[dest_length + i] = '\0';
return dest;
}
} // namespace LIBC_NAMESPACE_DECL
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