MathFunctions.h File Reference

#include <OpenMS/CONCEPT/Types.h>
#include <boost/math/special_functions/gamma.hpp>
#include <cmath>
#include <utility>

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Namespaces
	OpenMS
	Main OpenMS namespace.
	OpenMS::Math
	Math namespace.

Functions
static double	ceilDecimal (double x, int decPow)
	rounds x up to the next decimal power 10 ^ decPow More...
static double	roundDecimal (double x, int decPow)
	rounds x to the next decimal power 10 ^ decPow More...
static double	intervalTransformation (double x, double left1, double right1, double left2, double right2)
	transforms point x of interval [left1,right1] into interval [left2,right2] More...
double	linear2log (double x)
	Transforms a number from linear to log10 scale. Avoids negative logarithms by adding 1. More...
double	log2linear (double x)
	Transforms a number from log10 to to linear scale. Subtracts the 1 added by linear2log(double) More...
bool	isOdd (UInt x)
	Returns true if the given integer is odd. More...
template<typename T >
T	round (T x)
	Rounds the value. More...
static bool	approximatelyEqual (double a, double b, double tol)
	Returns if a is approximately equal b , allowing a tolerance of tol. More...
template<typename T >
T	gcd (T a, T b)
	Returns the greatest common divisor (gcd) of two numbers by applying the Euclidean algorithm. More...
template<typename T >
T	gcd (T a, T b, T &u1, T &u2)
	Returns the greatest common divisor by applying the extended Euclidean algorithm (Knuth TAoCP vol. 2, p342). Calculates u1, u2 and u3 (which is returned) so that a * u1 + b * u2 = u3 = gcd(a, b, u1, u2) More...
template<typename T >
T	getPPM (T mz_obs, T mz_ref)
	Compute parts-per-million of two m/z values. More...
template<typename T >
T	getPPMAbs (T mz_obs, T mz_ref)
	Compute absolute parts-per-million of two m/z values. More...
template<typename T >
T	ppmToMass (T ppm, T mz_ref)
	Compute the mass diff in [Th], given a ppm value and a reference point. More...
template<typename T >
T	ppmToMassAbs (T ppm, T mz_ref)
static std::pair< double, double >	getTolWindow (double val, double tol, bool ppm)
	Return tolerance window around val given tolerance tol. More...
double	factLn (UInt x)
	Return the ln(x!) of a value. More...