A few handy bits and pieces - little mathematical functions and the like. More...

#include "mycomplex.h"
#include "def.h"
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <cmath>
#include <stdio.h>
#include <string>
#include <exception>
#include <csignal>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <dirent.h>

Macros
#define	dout if(0)cout

Functions
double	zeroSqrt (double f)
	returns either sqrt(f) for f>0 or 0 otherwise

double	frexp (const Complex &c, int *i)
	Gives exponent of the largest number: either imaginary or real part.

void	FPE_ExceptionHandler (int nErrType)
	Exception handler - will even trap errors in the fortran portion. More...

int	theta (double a)
	Standard theta function: 1 is a>0, 0 otherwise.

void	outputCharacteristics (int)
	Sets number of decimal places to display in scientific output.

double	sqr (double a)
	square of a number

double	maximum (double a, double b)
	maximum of two numbers

double	minimum (double a, double b)
	minimum of a and b

int	minimum (int a, int b)
	minimum of a and b

double	toleranceCheck (double sTin, double sTout)
	Finds fractional difference between \|a\| and \|b\|.

double	minimum (double a, double b, double c)

double	maximum (double a, double b, double c)

double	middle (double a, double b, double c)

int	massorder (double &a, double &b, double &c)

bool	close (double m1, double m2, double tol)

bool	close (Complex m1, Complex m2, double tol)
	Requres that both the real and imaginary parts are close.

double	sign (double a, double b)
	Returns \|a\| with sign of b in front.

int	sgn (double x)
	gives the sign (+-1) of x

void	printRow (ostream &o, double x)

bool	testNan (double f)

Detailed Description

A few handy bits and pieces - little mathematical functions and the like.

Project: SOFTSUSY
Author: Ben Allanach
Manual: hep-ph/0104145, Comp. Phys. Comm. 143 (2002) 305
Webpage: http://hepforge.cedar.ac.uk/softsusy/

Function Documentation

◆ close()

bool close	(	double	m1,
		double	m2,
		double	tol
	)

Checks if ABSOLUTE (or squared) values are closer than tol, or both numbers are smaller than EPSTOL

◆ FPE_ExceptionHandler()

void FPE_ExceptionHandler ( int nErrType )

Exception handler - will even trap errors in the fortran portion.

< This reverts back to softsusy code!

◆ printRow()

void printRow	(	ostream &	o,
		double	x
	)

Outputs a space if greater than zero, a minus otherwise. Useful for outputting negative numbers in rows

◆ testNan()

bool testNan ( double f )

Returns true if f's a nan. Unfortunately, the behaviour of this function is not standardised across all platforms yet.