---

RazorBack::Safety_ Class Reference

#include <Safety.hh>

List of all members.

Public Methods
	Safety_ (bool Safediv=true)
	ctor: set Safediv to true if you want to use the safe-division feature (default).
bool	safe_div () const
	safe_div(): returns the Usesafediv variable. More...
bool	safe_div (bool S)
double	safe_div (double Num, double Denom, int Lineno=0) const
	safe_div(): returns Num/Denom if Denom is reliably non-0. More...
double	pythag (double a, double b) const
	pythag(): returns the value sqrt(a^2+b^2) without over- or underflows. More...
Static Public Methods
double	small ()
	return the smallest number which can still divide 1.0 w/o problems.
Private Attributes
bool	Usesafediv
	use safe division check if set to true.
Static Private Attributes
Fparch_<double>	Fp
	double-precision floating-point consts.
const double	SMALL
	smallest non-0 for which 1.0/SMALL is OK.

---

Constructor & Destructor Documentation

RazorBack::Safety_::Safety_ ( bool Safediv = true ) [inline, explicit]

ctor: set Safediv to true if you want to use the safe-division feature (default). Definition at line 44 of file Safety.hh.

---

Member Function Documentation

double RazorBack::Safety_::small ( ) [inline, static]

return the smallest number which can still divide 1.0 w/o problems. Definition at line 47 of file Safety.hh.

bool RazorBack::Safety_::safe_div ( ) const [inline]

safe_div(): returns the Usesafediv variable. safe_div(S): sets Usesafediv, returns old value. Definition at line 53 of file Safety.hh.

bool RazorBack::Safety_::safe_div ( bool S ) [inline]

Definition at line 54 of file Safety.hh.

double RazorBack::Safety_::safe_div ( double Num, double Denom, int Lineno = 0 ) const

safe_div(): returns Num/Denom if Denom is reliably non-0. If it is closer to 0 then the internal parameter SMALL, then it will be replaced by SMALL and the division is performed with a warning. The line number is printed when greater than 0 (default).

double RazorBack::Safety_::pythag ( double a, double b ) const

pythag(): returns the value sqrt(a^2+b^2) without over- or underflows. On some machines the math library contains the function hypot(x, y) which does the same job and will be used whenever possible.

---

Member Data Documentation

Fparch_<double> RazorBack::Safety_::Fp [static, private]

double-precision floating-point consts. Definition at line 33 of file Safety.hh.

const double RazorBack::Safety_::SMALL [static, private]

smallest non-0 for which 1.0/SMALL is OK. Definition at line 34 of file Safety.hh.

bool RazorBack::Safety_::Usesafediv [private]

use safe division check if set to true. Definition at line 35 of file Safety.hh.

---

The documentation for this class was generated from the following file:

• Safety.hh

---