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casinhf.3

CASINH

Section: Linux Programmer's Manual (3)
Updated: 2008-08-11
Index Return to Main Contents
 

NAME

casinh, casinhf, casinhl - complex arc sine hyperbolic  

SYNOPSIS

#include <complex.h>

double complex casinh(double complex z);
float complex casinhf(float complex z);
long double complex casinhl(long double complex z);

Link with -lm.  

DESCRIPTION

The casinh() function calculates the complex arc hyperbolic sine of z. If y = casinh(z), then z = csinh(y). The imaginary part of y is chosen in the interval [-pi/2,pi/2].

One has:


    casinh(z) = clog(z + csqrt(z * z + 1))
 

VERSIONS

These functions first appeared in glibc in version 2.1.  

CONFORMING TO

C99.  

SEE ALSO

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

COLOPHON

This page is part of release 3.21 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
VERSIONS
CONFORMING TO
SEE ALSO
COLOPHON

 

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