tanh(3M) Mathematical Library Functions 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 tan‐
gent 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(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOatanh(3M), isnan(3M), math.h(3HEAD), tan(3M), attributes(5), stan‐
dards(5)SunOS 5.10 12 Jul 2006 tanh(3M)