(C++) Fmod

Fmod is a math function to perform a modulus operation on doubles.

std::modf has a different purpose as Fmod: std::modf splits a double into its integer and a fractional part, for example it splits 12.34 into 12 and 0.34


#include <cassert>

 

double Fmod(const double x, const double mod)

{

  assert(mod != 0.0); //Cannot divide by zero

  return x - (mod * static_cast<int>(x / mod));

}

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