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polyfill-service
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A polyfill combinator
github.com/financial-times/polyfill-service
financial-times/polyfill-service
polyfill-service
/
polyfills
/
Math
/
tanh
/
polyfill.js
6 lines
(4 loc)
•
137 B
JavaScript
View Raw
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Math
.
tanh
=
function
tanh
(
x
) {
var
y;
return
x ===
Infinity
?
1
: x === -
Infinity
? -
1
: (y =
Math
.
exp
(
2
* x), (y -
1
) / (y +
1
)); };