Computes the cube root of a double-precision floating-point number.
input value
cube root
var v = cbrt( 64.0 ); // returns 4.0
var v = cbrt( 27.0 ); // returns 3.0
var v = cbrt( 0.0 ); // returns 0.0
var v = cbrt( -9.0 ); // returns ~-2.08
var v = cbrt( NaN ); // returns NaN
Computes the cube root of a double-precision floating-point number.