acrd.c File Reference

Inverse chord function. More...

#include "prim.h"

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Functions
double	acrd (double x)
	Inverse chord function. More...

Detailed Description

Inverse chord function.

Definition in file acrd.c.

Function Documentation

acrd()

double acrd

(

double

x

)

Inverse chord function.

Method
    arccrd(x) = 2*arcsin(x/2)

Definition at line 45 of file acrd.c.

References asin().

Referenced by RealNumber::ArcChord().

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

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