Evaluates the natural exponential function.
input value
function value
var v = exp( 4.0 ); // returns ~54.5982
var v = exp( -9.0 ); // returns ~1.234e-4
var v = exp( 0.0 ); // returns 1.0
var v = exp( NaN ); // returns NaN
Evaluates the natural exponential function.