// Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//     https://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#include <ring-core/mem.h>

#include "internal.h"

int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len) {

  const aliasing_uint8_t *a = in_a;

  const aliasing_uint8_t *b = in_b;

  uint8_t x = 0;

  for (size_t i = 0; i < len; i++) {

    x |= a[i] ^ b[i];

  }

  return x;

}