exs.c File Reference

Exsecant function. More...

#include "prim.h"

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Functions
double	exs (double x)
	Exsecant function. More...

Detailed Description

Exsecant function.

Definition in file exs.c.

Function Documentation

exs()

double exs

(

double

x

)

Exsecant function.

exsec(x) = sec(x)-1
         = (1-cos(x))/cos(x)
         = ver(x)/cos(x)
         = ver(x)*sec(x)
         = 2*sin(x/2)*sin(x/2)*sec(x)

Definition at line 48 of file exs.c.

References sec(), and ver().

Referenced by RealNumber::ExSecant().

{
    return ver(x) * sec(x);
}

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