ver.c File Reference

Secant function. More...

#include "prim.h"

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Functions
double	ver (double x)
	Versed sine function. More...

Detailed Description

Secant function.

Versed sine function.

Definition in file ver.c.

Function Documentation

ver()

double ver

(

double

x

)

Versed sine function.

versin = 1-cos(x)
       = 2*sin(x/2)*sin(x/2)

Definition at line 45 of file ver.c.

References sin().

Referenced by exs(), and RealNumber::VerSine().

{
    double a = x / 2.0;
    double b = sin(a);
    double c = 2 * b * b;
    return c;
}

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