div, mod, and mul as unary operators?

[TedWalther]

mul and div do what I expect when used as unary operators.



(div 10) => 0.1 (10 becomes 1/10)

(mul 10) => 10 (10 becomes 10*1)



But mod... mod does nothing.



Could mod be made so it behaves the following way?



(mod 10) => 0 (10 becomes 10%1)

(mod 10.5) => 0.5



This would let mod act as the builtin "frac" for getting the fractional part of a number; right now we have round, floor, and ciel that already give us the integer part of a number.  And yes, I can do (mod %number% 1).  But in keeping with the unariness of the other operators, I request this change.



Then I could do (constant (global 'frac) mod) in my .init.lsp



Ted