MathUtils.h File Reference

#include <assert.h>
#include <climits>
#include <cmath>
#include <stdint.h>
#include <type_traits>

Namespaces
namespace	MathUtils
	Math utility class. Note that the test() routine should return true for all implementations.

Functions
int	MathUtils::round_int (double x)
	Round to nearest integer. This routine does fast rounding to the nearest integer. In the case (k + 0.5 for any integer k) we round up to k+1, and in all other instances we should return the nearest integer. Thus, { -1.5, -0.5, 0.5, 1.5 } is rounded to { -1, 0, 1, 2 }. It preserves the property that round(k) - round(k-1) = 1 for all doubles k.
int	MathUtils::truncate_int (double x)
	Truncate to nearest integer. This routine does fast truncation to an integer. It should simply drop the fractional portion of the floating point number.
int64_t	MathUtils::abs (int64_t a)
unsigned	MathUtils::bitcount (unsigned v)
void	MathUtils::hack ()
template<typename FloatT >
bool	MathUtils::FloatEquals (FloatT f1, FloatT f2, FloatT maxDelta)
template<typename T , std::enable_if_t< std::is_floating_point< T >::value, bool > = true>
T	MathUtils::RoundF (const T value, const T multiple)
	Round a floating point number to nearest multiple.