sdm/libs/utils/utils.cpp

/*
* Copyright (c) 2016 - 2017, The Linux Foundation. All rights reserved.
*
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* modification, are permitted provided that the following conditions are
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*     with the distribution.
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*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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*/

#include <utils/sys.h>
#include <math.h>
#include <algorithm>

#define __CLASS__ "Utils"

namespace sdm {

float gcd(float a, float b) {
  if (a < b) {
    std::swap(a, b);
  }

  while (b != 0) {
    float tmp = b;
    b = fmodf(a, b);
    a = tmp;
  }

  return a;
}

float lcm(float a, float b) {
  return (a * b) / gcd(a, b);
}

void CloseFd(int *fd) {
  if (*fd >= 0) {
    Sys::close_(*fd);
    *fd = -1;
  }
}

}  // namespace sdm