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man pages section 3: Extended Library Functions, Volume 2

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Updated: Thursday, June 13, 2019
 
 

tanhf(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
Committed
Availability
system/library/math
MT-Level
MT-Safe
Standard

See Also

math.h(3HEAD), atanh(3M), isnan(3M), tan(3M), attributes(7), standards(7)