acoshl.c File Reference

#include "../math.h"

Functions
long double	acoshl (long double x)
	Compute area hyperbolic cosine. More...

Function Documentation

acoshl()

long double acoshl

(

long double

x

)

Compute area hyperbolic cosine.

The acoshl functions compute the (nonnegative) arc hyperbolic cosine of x. A domain error occurs for arguments less than 1.

Parameters

x	Value whose area hyperbolic cosine is computed.

Returns

The acoshl functions return arcosh x in the interval [0, +∞].