<div dir="ltr"><div>Hint: the problem has nothing to do with zeros.</div><div><br></div><div>λ> 0.1 + (0.2 + 0.3) == (0.1 + 0.2) + 0.3<br>False<br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 6, 2019 at 4:20 PM Dannyu NDos <<a href="mailto:ndospark320@gmail.com">ndospark320@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Omg, addition is not even associative? The zeros truly ruined everything.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">2019년 11월 7일 (목) 06:58, Brent Yorgey <<a href="mailto:byorgey@gmail.com" target="_blank">byorgey@gmail.com</a>>님이 작성:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div>How is that worse than the fact that addition is already not associative for floating point types? At least +0 is really the identity up to (==).<br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 6, 2019, 3:49 PM Dannyu NDos <<a href="mailto:ndospark320@gmail.com" rel="noreferrer noreferrer" target="_blank">ndospark320@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Sum has bug with floating points. Current definition states +0 as the identity element, while the actual identity is -0 since +0 + -0 = +0.</div>
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