pkg math/big, const MaxBase = 36
pkg math/big, method (*Int) MarshalJSON() ([]uint8, error)
pkg math/big, method (*Int) SetUint64(uint64) *Int
pkg math/big, method (*Int) Uint64() uint64
pkg math/big, method (*Int) UnmarshalJSON([]uint8) error
pkg math/big, method (*Rat) Float64() (float64, bool)
pkg math/big, method (*Rat) SetFloat64(float64) *Rat

std=Math.sqrt(u.tcf*nx*ny*(nx+ny+1)/12);if(alt=='less'){z=(u.ux-mu)/std;}else if(alt=='greater'){z=(u.uy-mu)/std;}else if(alt=='two-sided'){z=Math.abs((u.big-mu)/std);}else{console.log('Unknown alternative argument');}
if(alt=='two-sided'){f=2;}