aexc.c File Reference

#include "prim.h"

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Functions
double	aexc (double x)
	Inverse excosecant function. More...

Function Documentation

aexc()

double aexc

(

double

x

)

Inverse excosecant function.

Method
    aexcsc(x) = arccsc(x+1)
              = arcsin(1/(x+1))

Definition at line 46 of file aexc.c.

References asin().

Referenced by RealNumber::ArcExCosecant().

{
    double a, b, c;

    if (x > -2.0 && x < 0.0)
        return NAN;

    a = x + 1;
    b = 1 / a;
    c = asin(b);
    return c;
}

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