| timotimo | i'll try sleep again, maybe with more success than yesterday | 00:05 | |
| jnthn | Rest well :) | 00:08 | |
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| timotimo | well, i'm up | 08:11 | |
| nine | But did you find some sleep? | 08:15 | |
| timotimo | yeah, there was some | 08:18 | |
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| viki clears throat | 11:03 | ||
| github.com/MoarVM/MoarVM/pull/442 | |||
| brrt checks out | 11:13 | ||
| i have no idea why that should do what you mean :-) | 11:14 | ||
| viki | You mean why 1 / 2**1020 should be a proper number and not 0? | 11:16 | |
| r: use nqp; nqp::div_In(1, 2**1020) | |||
| camelia | ( no output ) | ||
| viki | r: use nqp; say nqp::div_In(1, 2**1020) | ||
| camelia | rakudo-jvm 76b061: OUTPUT«8.9E-308» | ||
| ..rakudo-moar 64343d: OUTPUT«0» | |||
| viki | r: use nqp; say nqp::div_In(2**1020, 1) | ||
| camelia | rakudo-moar 64343d: OUTPUT«Inf» | ||
| ..rakudo-jvm 76b061: OUTPUT«1.1235582092889474E307» | |||
| viki | And since that stuff is used by Perl 6's Rats, we get: | 11:17 | |
| r: say 1/2**1020 | |||
| camelia | rakudo-moar 64343d: OUTPUT«0» | ||
| ..rakudo-jvm 76b061: OUTPUT«8.9E-308» | |||
| viki | r: say 1e0/2e0**1020 | ||
| camelia | rakudo-moar 64343d: OUTPUT«8.90029543402881e-308» | ||
| ..rakudo-jvm 76b061: OUTPUT«8.900295434028806E-308» | |||
| viki | etc | ||
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| viki | .ask MasterDuke can you look at this ticket? IIRC we decided this was a DITHWIDT and wasn't worth a fix, right? rt.perl.org/Ticket/Display.html?id=128551 | 11:52 | |
| yoleaux2 | viki: I'll pass your message to MasterDuke. | ||
| viki | oh whoops, wc | 11:53 | |
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| brrt | viki: I mean, I have no idea why that patch works | 15:01 | |
| although I believe that it works | |||
| viki | brrt: it works because when we do MAX, in the case of 1/2**1020 you end up with 1 / 2 ** 57, which is less than zero and so the numerator ends up being zero. | 15:02 | |
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| viki | brrt: and the fix avoids that case, but I'm not 100% sure it's a good fix | 15:06 | |
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| brrt | hmmm | 15:33 | |
| honestly, I have no idea how IEEE floating point works at all | 15:34 | ||
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| timotimo | i don't have an idea why IEEE floating points works at all ;) | 19:49 | |
| moritz | I don't hae any idea if IEEE floating points work at all ;) | 19:50 | |
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