CACOSH

Section: complex math routines (3)
Updated: 2002-07-28
Index Return to Main Contents
 

NAME

cacosh, cacoshf, cacoshl - complex arc hyperbolic cosine  

SYNOPSIS

#include <complex.h>

double complex cacosh(double complex z);
float complex cacoshf(float complex z);
long double complex cacoshl(long double complex z);

Link with -lm.  

DESCRIPTION

The cacosh() function calculates the complex acosh(). If y = cacosh(z), then z = ccosh(y). The imaginary part of y is chosen in the interval [-pi,pi]. The real part of y is chosen nonnegative.

One has cacosh(z) = (0.5)*clog((1+z)/(1-z)).  

CONFORMING TO

C99  

SEE ALSO

acosh(3), cabs(3), cimag(3), complex(7)


 

Index

NAME
SYNOPSIS
DESCRIPTION
CONFORMING TO
SEE ALSO

linux.jgfs.net manual pages