common.hpp File Reference

#include <algorithm>
#include <cassert>
#include <cmath>
#include <cstdint>
#include <functional>
#include <limits>
#include <stdexcept>
#include <type_traits>
#include <utility>
#include <vector>

Go to the source code of this file.

Namespaces
	genesis
	Container namespace for all symbols of genesis in order to keep them separate when used as a library.
	genesis::utils

Functions
template<typename T >
constexpr T	abs_diff (T const &lhs, T const &rhs)
	Calculate the absolute differenence between two values. More...
bool	almost_equal_relative (double lhs, double rhs, double max_rel_diff=std::numeric_limits< double >::epsilon())
	Check whether two doubles are almost equal, using a relative epsilon to compare them. More...
template<typename T >
void	ascending (T &f, T &s)
	Sort two values in ascending order, inplace. More...
double	circumference (double radius)
template<typename T , typename U >
constexpr int	compare_threeway (T lhs, U rhs)
	Three-way comparison (spaceship operator) for C++ <20. More...
constexpr double	cubed (double x)
	Cube of a number. More...
template<typename T >
void	descending (T &f, T &s)
	Sort two values in descending order, inplace. More...
template<class ForwardIteratorA , class ForwardIteratorB >
std::pair< std::vector< double >, std::vector< double > >	finite_pairs (ForwardIteratorA first_a, ForwardIteratorA last_a, ForwardIteratorB first_b, ForwardIteratorB last_b)
	Helper function that cleans two ranges of double of the same length from non-finite values. More...
template<class ForwardIteratorA , class ForwardIteratorB >
void	for_each_finite_pair (ForwardIteratorA first_a, ForwardIteratorA last_a, ForwardIteratorB first_b, ForwardIteratorB last_b, std::function< void(double value_a, double value_b)> execute)
	Iterate two ranges of double values in parallel, and execute a function for each pair of values from the two ranges where both values are finite. More...
size_t	int_pow (size_t base, size_t exp)
	Calculate the power base^exp for positive integer values. More...
bool	is_valid_int_pow (size_t base, size_t exp)
	Return whether the given power can be stored within a size_t. More...
double	round_to (double x, size_t accuracy_order)
	Retun the value of x, rounded to the decimal digit given by accuracy_order. More...
template<typename T >
constexpr int	signum (T x)
	Get the sign of a value, which is either -1, 0, or 1. More...
template<typename T >
constexpr int	signum (T x, std::false_type)
	Implementation of signum(T x) for unsigned types. See there for details. More...
template<typename T >
constexpr int	signum (T x, std::true_type)
	Implementation of signum(T x) for signed types. See there for details. More...
constexpr double	squared (double x)
	Square of a number. More...

Variables
constexpr double	PI = 3.141592653589793238463
	Make the world go round. More...