atanl - Man Page

arc tangent function

Prolog

This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

Synopsis

#include <math.h>

long double atanl(long double x);

Description

Refer to atan().

Info

2017 IEEE/The Open Group POSIX Programmer's Manual