ATAN(3) | Library Functions Manual | ATAN(3) |
atan
, atanf
,
atanl
—
#include <math.h>
double
atan
(double
x);
float
atanf
(float
x);
long double
atanl
(long
double x);
atan
(), atanf
(), and
atanl
() functions compute the principal value of the
arc tangent of x in the range [-pi/2, +pi/2].
atan
() functions conforms to
ISO/IEC 9899:1999 (“ISO C99”).
January 29, 2013 | NetBSD 9.2 |