Modern Math Tanh

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Tanh

Returns the hyperbolic tangent of a number, which lies between -1 and 1.

Syntax

Tanh( x )

Notes

• Approaches 1 quickly: Tanh( 20.0 ) already prints as 1. Atanh is its inverse.
• Overloaded on float64 and on float32: a single-precision argument takes the single-precision path and does not widen.
• BOUNDED accuracy: correct to the platform library's stated ulp bound.

Examples

#import "std/numeric"
using numeric

print Tanh( 1.0 )            '' 0.7615941559557649
print Tanh( 20.0 )           '' 1

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Library: Math Library
Category: Math Library
Documented under: The libm surface