Manual Page Result
0
Command: acosh | Section: 3 | Source: OpenBSD | File: acosh.3
ACOSH(3) FreeBSD Library Functions Manual ACOSH(3)
NAME
acosh, acoshf, acoshl - inverse hyperbolic cosine functions
SYNOPSIS
#include <math.h>
double
acosh(double x);
float
acoshf(float x);
long double
acoshl(long double x);
DESCRIPTION
The acosh() function computes the inverse hyperbolic cosine of the real
argument x. The acoshf() function is a single precision version of
acosh(). The acoshl() function is an extended precision version of
acosh().
RETURN VALUES
If x is less than one, acosh(x), acoshf(x) and acoshl(x) return NaN and
set the global variable errno to EDOM.
SEE ALSO
asinh(3), atanh(3), exp(3)
HISTORY
The acosh() function appeared in 4.3BSD.
FreeBSD 14.1-RELEASE-p8 June 29, 2021 FreeBSD 14.1-RELEASE-p8