ccosh(), ccoshf(), ccoshl()

Updated: October 26, 2022

Compute the complex hyperbolic cosine

Synopsis:

#include <complex.h>

double complex ccosh( double complex z );

float complex ccoshf( float complex z );

long double complex ccoshl( long double complex z );

Arguments:

z
The value that you want to get the complex hyperbolic cosine of.

Library:

libm
The general-purpose math library.
libm-sve
(QNX Neutrino 7.1 or later) A library that optimizes the code for ARMv8.2 chips that have Scalable Vector Extension hardware.

Your system requirements will determine how you should work with these libraries:

Note: Compile your program with the -fno-builtin option to prevent the compiler from using a built-in version of the function.

Description:

These functions compute the complex hyperbolic cosine of z.

To check for error situations, use feclearexcept() and fetestexcept(). For example:

Returns:

The complex hyperbolic cosine of z.

If z is: These functions return: Errors:
0 + 0i 1 + 0i
0 + Infi NaN ± 0i, where the sign of the imaginary part is unspecified FE_INVALID
0 + NaNi NaN ± 0i, where the sign of the imaginary part is unspecified
x + Infi, for any finite non-zero x NaN - NaNi FE_INVALID
x + NaNi, for any finite non-zero x NaN + NaNi
Inf + 0i Inf + 0i
Inf + yi, for any finite nonzero y Inf * cos(y) + Inf * sin(y)i
Inf + Infi ±Inf + NaNi, where the sign of the real part is unspecified FE_INVALID
Inf + NaNi Inf + NaNi
NaN + 0i NaN ± 0i, where the sign of the imaginary part is unspecified
NaN + yi, for any finite nonzero y NaN + NaNi
NaN + NaNi NaN + NaNi

These functions raise FE_INEXACT if the FPU reports that the result can't be exactly represented as a floating-point number.

Classification:

C11, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler Yes
Signal handler Yes
Thread Yes