COSH(3) | Library Functions Manual | COSH(3)

# NAME

`cosh`, `coshf` —
hyperbolic cosine function

# LIBRARY

Math Library (libm, -lm)

# SYNOPSIS

`#include <math.h>`

double
`cosh`(double x);

float
`coshf`(float x);

# DESCRIPTION

The `cosh`() and `coshf`() functions compute the hyperbolic cosine of x.

# RETURN VALUES

If the magnitude of x is too large, `cosh`(x) and `coshf`(x) return Inf and sets the global variable errno to ERANGE.

# SEE ALSO

acos(3), asin(3), atan(3), atan2(3), cos(3), math(3), sin(3), sinh(3), tan(3), tanh(3)

# STANDARDS

The `cosh`() function conforms to ANSI X3.159-1989 (“ANSI C89”).

May 2, 1991 | NetBSD 9.2