libc/bionic/__memcmp16.cpp

/*
Copyright (c) 2013 Intel Corporation
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    * Redistributions of source code must retain the above copyright notice,
    * this list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above copyright notice,
    * this list of conditions and the following disclaimer in the documentation
    * and/or other materials provided with the distribution.

    * Neither the name of Intel Corporation nor the names of its contributors
    * may be used to endorse or promote products derived from this software
    * without specific prior written permission.

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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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*/

#include <stddef.h>

// Unoptimized version of __memcmp16.
extern "C" int __memcmp16(const unsigned short* lhs, const unsigned short* rhs, size_t n) {
  for (size_t i = 0; i < n; i++) {
    if (*lhs != *rhs) {
      return *lhs - *rhs;
    }
    lhs++;
    rhs++;
  }
  return 0;
}