Determine whether two float number is equal

float-equal.cpp

#include "float-equal.hpp"
#include <iostream>
#include <math.h>

using namespace std;

int main(int argc, char const *argv[])
{
    bool ret;
    float a = 0.01;
    float b = 0.012;
    ret = is_float_equal(a,b, 2);
    cout<<ret<<endl;

    return 0;
}

float-equal.hpp

#ifndef FLOAT_EQUAL_HPP
#define FLOAT_EQUAL_HPP

#include <stdlib.h>
#include <stdint.h>
#include <math.h>

template <typename T>
bool is_float_equal(T value1, T value2, int acc)
{
  // according to |value1 - value2| < epsilon
  if (((value1 -value2) < pow(10, -acc)) && ((value1 -value2) > -pow(10, -acc)) ) {
    return true;
  } else {
    return false;
  }
}

#endif