ATAN
Section: Linux Programmer's Manual (3)
Updated: June 8, 1993
Index
Return to Main Contents
NAME
atan - arc tangent function
SYNOPSIS
#include <math.h>
double atan(double x);
DESCRIPTION
The atan() function calculates the arc tangent of x; that is
the value whose tangent is x.
RETURN VALUE
The atan() function returns the arc tangent in radians and the
value is mathematically defined to be between -PI/2 and PI/2
(inclusive).
CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899
SEE ALSO
acos(3), asin(3), atan2(3), cos(3), sin(3), tan(3)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- CONFORMING TO
-
- SEE ALSO
-
This document was created by
man2html,
using the manual pages.
Time: 12:24:23 GMT, March 22, 2025