| ATANH(3) | Library Functions Manual | ATANH(3) |
atanh, atanhf,
atanhl —
#include <math.h>
double
atanh(double
x);
float
atanhf(float
x);
long double
atanhl(long
double x);
atanh(), atanhf(), and
atanhl() functions compute the inverse hyperbolic
tangent of the real argument x.
atanh(x),
atanhf(x), and
atanhl(x) return +inf, -inf or
NaN, and sets the global variable errno to
EDOM.
atanh() function conforms to
ISO/IEC 9899:1999 (“ISO C99”).
atanh() function appeared in
4.3BSD.
| January 29, 2013 | NetBSD 10.1 |