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sign

sign function

Returns the sign of the number.

Usage: nerdamer("sign(x)")

Parameters

expression x Returns the appropriate value if possible otherwise it returns the function with the simplified expression

Returns

Expression
EXAMPLES: 
var x = nerdamer('sign(x)');
console.log(x.toString());
var y = nerdamer('sign(-1)').evaluate();
console.log(y.toString());
OUTPUT:
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