Some systems round their answers as John said but it's easy to check that it's a lie:
R version 3.1.0 (2014-04-10) -- "Spring Dance" > 2*10.97 + 23.9985 [1] 45.9385 > 2*10.97 + 23.9985 == 45.9385 [1] FALSE This is perl 5, version 16, subversion 2 (v5.16.2) DB<1> x 2*10.97 + 23.9985 0 45.9385 DB<2> x 2*10.97 + 23.9985 == 45.9385 0 '' I don't have a working copy of Matlab right now, but I think it does this too. On Tue, Nov 4, 2014 at 8:31 PM, Neil Devadasan <ndeva...@gmail.com> wrote: > Thanks > > On Tuesday, November 4, 2014 2:13:37 PM UTC-5, John Myles White wrote: >> >> Hi Neil, >> >> Julie does math the same way that all computers do math. You're probably >> coming from another language where a lot of effort is invested into >> pretending that computers offer a closer approximation to abstract >> mathematics than they actually do. Those systems have been lying to you. >> >> Put another way: you just took the red pill by using Julia. >> >> -- John >> >> On Nov 4, 2014, at 11:06 AM, Neil Devadasan <ndev...@gmail.com> wrote: >> >> > julia> f(x::Float64, y::Float64) = 2x + y; >> > >> > julia> f(10.97,23.9985) >> > 45.938500000000005 >> > >> > The above method execution of function f returns an answer that I >> cannot understand. Can someone clarify? >> > >> > Thank you. >> >>
