TANH(3M) Mathematical Library Functions TANH(3M)
tanh, tanhf, tanhl - hyperbolic tangent function
c99 [ flag... ] file... -lm [ library... ]
#include <math.h>
double tanh(double x);
float tanhf(float x);
long double tanhl(long double x);
These functions compute the hyperbolic tangent of their argument x.
Upon successful completion, these functions return the hyperbolic
tangent of x.
If x is NaN, a NaN is returned.
If x is +-0, x is returned.
If x is +-Inf, +-1 is returned.
No errors are defined.
See attributes(7) for descriptions of the following attributes:
+----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+----------------------------+-----------------------------+
|Interface Stability | Standard |
+----------------------------+-----------------------------+
|MT-Level | MT-Safe |
+----------------------------+-----------------------------+
math.h(3HEAD), atanh(3M), isnan(3M), tan(3M), attributes(7),
standards(7)
SunOS 5.11 July 12, 2006 TANH(3M)
NAME
tanh, tanhf, tanhl - hyperbolic tangent function
SYNOPSIS
c99 [ flag... ] file... -lm [ library... ]
#include <math.h>
double tanh(double x);
float tanhf(float x);
long double tanhl(long double x);
DESCRIPTION
These functions compute the hyperbolic tangent of their argument x.
RETURN VALUES
Upon successful completion, these functions return the hyperbolic
tangent of x.
If x is NaN, a NaN is returned.
If x is +-0, x is returned.
If x is +-Inf, +-1 is returned.
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+----------------------------+-----------------------------+
|Interface Stability | Standard |
+----------------------------+-----------------------------+
|MT-Level | MT-Safe |
+----------------------------+-----------------------------+
SEE ALSO
math.h(3HEAD), atanh(3M), isnan(3M), tan(3M), attributes(7),
standards(7)
SunOS 5.11 July 12, 2006 TANH(3M)