others Namespace Reference

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Functions
bool	are_almost_equal (double a, double b, double absolute_tolerance=0.0001)
	Compare two floating point numbers with a certain tolerance. This is needed as with some values, the result (e.g.: -196.15) might be a bit lower (in this case, -196.499999...).
double	kelvin_to_celsius (double temperature_in_k)
	Conversion from Kelvin to Celsius algorithm.

Detailed Description

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Function Documentation

are_almost_equal()

bool others::are_almost_equal	(	double	a,
		double	b,
		double	absolute_tolerance = 0.0001 )

Compare two floating point numbers with a certain tolerance. This is needed as with some values, the result (e.g.: -196.15) might be a bit lower (in this case, -196.499999...).

Parameters

a	the first number to compare
b	the second number to compare
tolerance	the tolerance to use when comparing the numbers

Returns

true if the numbers ARE equal within the given tolerance

false if the numbers are NOT equal within the given tolerance otherwise

                                                                              {
    return std::abs(a - b) < absolute_tolerance;
}

kelvin_to_celsius()

double others::kelvin_to_celsius

(

double

temperature_in_k

)

Conversion from Kelvin to Celsius algorithm.

Parameters

number

the Celsius number that will be used to convert

Returns

the Kelvin number converted to Celsius

                                                  {
    const double absolute_zero_in_c = -273.15;
    if (temperature_in_k < absolute_zero_in_c) {
        throw std::invalid_argument("input temperature below absolute zero");
    }
    return temperature_in_k + absolute_zero_in_c;
}