nevermind, I was thinking of integer exponents. I should be using (^^) instead.
Thank you all.
Best,
Fabricio Olivetti de França
On Wed, May 19, 2021 at 12:29 PM Henning Thielemann
On Wed, 19 May 2021, Viktor Dukhovni wrote:
On Wed, May 19, 2021 at 11:50:22AM -0300, Fabrício Olivetti de França wrote:
So I was wondering, is there any reason to have this (potentially dangerous) default implementation on base?
The behaviour for negative inputs seems to be correct:
λ> log(-2) NaN λ> exp(log(-2)) NaN λ> exp(log(-2) * (-2)) NaN λ> log(0) -Infinity
were you expecting these to check for non-positive inputs and to throw a floating point exception?
I guess he expects (-2)**(-2) = 1/4.
But defined this way, (**) would be rather discontinuous._______________________________________________ Haskell-Cafe mailing list To (un)subscribe, modify options or view archives go to: http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe Only members subscribed via the mailman list are allowed to post.