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//===-- Implementation of swab --------------------------------------------===//
//
// 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/unistd/swab.h"
#include "src/__support/common.h"
#include "src/__support/macros/config.h"
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(void, swab,
(const void *__restrict from, void *__restrict to,
ssize_t n)) {
const unsigned char *f = static_cast<const unsigned char *>(from);
unsigned char *t = static_cast<unsigned char *>(to);
for (ssize_t i = 1; i < n; i += 2) {
t[i - 1] = f[i];
t[i] = f[i - 1];
}
}
} // namespace LIBC_NAMESPACE_DECL
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