cube: function [x] -> x^3
croot: function [x] -> x^(1//3)

names: ["sin/asin", "cos/acos", "cube/croot"]
funclist: @[var 'sin, var 'cos, var 'cube]
invlist:  @[var 'asin, var 'acos, var 'croot]

num: 0.5

loop 0..2 'f [
    result: call funclist\[f] @[num]
    print [names\[f] "=>" call invlist\[f] @[result]]
]