ahv.c File Reference

Inverse haversed sine. More...

#include "prim.h"

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Functions
double	ahv (double x)
	Inverse haversed sine. More...

Detailed Description

Inverse haversed sine.

Definition in file ahv.c.

Function Documentation

ahv()

double ahv

(

double

x

)

Inverse haversed sine.

Definition at line 40 of file ahv.c.

References atan(), and sqrt().

Referenced by RealNumber::ArcHaVerSine().

{
    double a = x - x * x;
    double b = 2.0 * sqrt(a);
    double c = 1.0 - 2.0 * x;
    double d = atan(b / c);   
    return d;
}

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