This was the big change in clojure 1.3
See http://dev.clojure.org/display/doc/Enhanced+Primitive+Support
The expectation now is that if you are doing math that is going to
overflow, you can either introduce a bigint into the chain somewhere,
after which all the math will use bigints (contagion) or the writer of
the function can use the *' (prime) operator.
So the following are both fine, with the first usually being preferred
because it leaves the choice to the consumer.
(* 1000M 1000 1000 1000 1000 1000 1000)
(*' 1000 1000 1000 1000 1000 1000 1000)
On Mon, Feb 6, 2012 at 8:04 PM, Leandro Moreira
<leandro.rhc...@gmail.com> wrote:
> I thought clojure always did auto promotion between long and bigdecimal, but
> I run repl today and I notice this:
>
> (* 1000 1000 1000 1000 1000 1000 1000) raises overflow
> (* 1000M 1000M 1000M 1000M 1000M 1000M 1000M) this is ok
>
> So this was always working that way? or they've changed? (and if yes, why
> they did that?)
>
> thanks :)
>
> ps: I'm using {:interim true, :major 1, :minor 4, :incremental 0, :qualifier
> "master"}
>
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