Dear Marc or Brad, I&#39;d be curious to know if there is any way to ensure that calculations in Gambit become completely exact?<br><br>What I&#39;m looking for is that as flonum operations by nature are inexact (+ 0.1 0.2 would be a good example), would there be a way to use bignum-only operations, or have some kind of configuration that uses fixnum when applicable and otherwise bignum only.<br>

<br>Is there anything like this - I know fixnum and flonum ops can be accessed under fixnum+ etc., but what about the bignums, (bignum+ 99999999999999999999 2)?<br><br>Afaik the bignum library is completely exact for + and -, and has a precision of at least 10^-17 for the rest of the operations (* / modulo sqrt expt etc), is this the way?<br>

<br>Kind regards, Mikael<br><br>