Even in Perl you've got MigMit:~ MigMit$ perl -e 'printf("%.20f\n",log(125)/log(5))' 3.00000000000000044409 On 22 Aug 2009, at 13:24, Roberto López wrote:
If 4.0 / 2.0 was 1.9999999999999999999998, it would be ok?
The real value of log10 1000 is 3 (3.0). It can be represented with accuracy and it should be.
You get the accuracy value in Perl, but there is the same problem in Python. It's a bit discouraging.
Eugene Kirpichov wrote:
What do you consider to be the specification of logBase? Exact floating-point numbers don't exist, so it has to return an approximation. The standard doesn't give any guarantees as to the precision of the approximation. Is a precision of 0.00000000000004 not satisfactory for you?
_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe