ccsch.c File Reference

#include "prim.h"

Include dependency graph for ccsch.c:

Go to the source code of this file.

Functions
complex	ccsch (complex z)
	Hyperbolic secant of a complex number. More...

Function Documentation

ccsch()

complex ccsch

(

complex

z

)

Hyperbolic secant of a complex number.

Calculated as in Open Office:

a+bi
            2.0 * sinh(a) * cos(b)
real  = ------------------------------
         cosh(2.0 * a) - cos(2.0 * b)

        -2.0 * cosh(2.0 * a) * sin(b)
imag  = ------------------------------
         cosh(2.0 * a) - cos(2.0 * b)

https://wiki.openoffice.org/wiki/Documentation/How_Tos/Calc:_IMCSCH_function

Definition at line 48 of file ccsch.c.

References cimag(), cos(), cosh(), cpack(), creal(), sin(), and sinh().

Referenced by ComplexNumber::HypCosecant().

{
    complex w;
    double a, b;
    double d;

    a = creal(z);
    b = cimag(z);
    d = cosh(2.0 * a) - cos(2.0 * b);
    w = cpack((2.0 * sinh(a) * cos(b) / d), (-2.0 * cosh(a) * sin(b) / d));

    return w;
}

Here is the call graph for this function:

Here is the caller graph for this function: