cacoshf, cacosh, cacoshl

 

C

Language

Standard Library

Type support

Dynamic memory management

Error handling

Program utilities

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Thread support (C11)

Atomic operations (C11)

 

Numerics

Common mathematical functions

Floating-point environment

Complex number arithmetics

Random number generation

Type-generic math

 

Complex number arithmetic

Types and the imaginary constant
complex Complex_I CMPLX	imaginary Imaginary_I I
Manipulation
cimag creal carg	conj cproj
Power and exponential functions
cexp clog	cpow csqrt
Trigonometric functions
ccos csin ctan	cacos casin catan
Hyperbolic functions
ccosh csinh ctanh	cacosh casinh catanh

 

Defined in header <complex.h>
float complex       cacoshf( float complex z );		(since C99)
double complex      cacosh( double complex z );		(since C99)
long double complex cacoshl( long double complex z );		(since C99)

Computes the complex arc hyperbolic cosine of z with branch cuts outside the values less than 1 along the real axis.

Parameters

z

-

complex argument

Return value

The complex arc hyperbolic cosine of z in the interval [0; ∞) along the real axis and in the interval [−iπ; +iπ] along the imaginary axis.

Example

Run this code

#include <stdio.h>
#include <complex.h>
 
int main(void)
{
    double complex z;
 
    z = ccosh(1.0+2.0*I);
    printf("ccosh(1.0+2.0*I)             ==> %f%+fi\n", creal(z),cimag(z));
 
    z = cacosh(-0.642148+1.068607*I);
    printf("cacosh(-0.642148+1.068607*I) ==> %f%+fi\n", creal(z),cimag(z));
 
    return 0;
}

Output:

ccosh(1.0+2.0*I)             ==> -0.642148+1.068607i
cacosh(-0.642148+1.068607*I) ==> 1.000000+2.000000i

See also

casinhcasinhfcasinhl (C99)(C99)(C99)	computes the complex arc hyperbolic sine (function)
catanhcatanhfcatanhl (C99)(C99)(C99)	computes the complex arc hyperbolic tangent (function)
ccoshccoshfccoshl (C99)(C99)(C99)	computes the complex hyperbolic cosine (function)
acoshacoshfacoshl (C99)(C99)(C99)	computes inverse hyperbolic cosine (arcosh(x)) (function)
C++ documentation for acosh