Re: [OT] Accessing python3's print() of floating point values

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Re^2: [OT] Accessing python3's print() of floating point values by syphilis (Archbishop) on Jan 19, 2019 at 00:22 UTC
perl6 -e "say 2 * -1074"* Kudos to perl6 if it's now implementing the algorithm that outputs as few decimal digits as are necessary. My older perl6 (Perl 6.c) gives me: `$ perl6 -e "say 2 -1074" Numeric overflow in block <unit> at -e line 1 Actually thrown at: in block <unit> at -e line 1` [download] What does your perl6 output for: `perl6 -e "say 2 0.5"` [download] Does perl6 yet provide "long double" and "__float128" builds ? They are the types I'm currently unable to independently verify. (As I mentioned in my original post, for "doubles" I can already verify my outputs against python3.) Cheers, Rob	[reply] [d/l] [select]
Re^3: [OT] Accessing python3's print() of floating point values by Anonymous Monk on Jan 21, 2019 at 14:28 UTC
I use perl6::version=2018.04.1 and also perl6::version=2018.10.1 The results for version 2018.04.1 (isn't this rather old?) are: For perl6 -e "say 2 0.5": 1.4142135623730951 For perl6 -e "say 2 -1074": 5e-324 So you should give a somewhat newer version a try My results are from the rakudo-star-2018.04-x86_64 (JIT).msi on Windows	[reply]
Re^4: [OT] Accessing python3's print() of floating point values by syphilis (Archbishop) on Jan 22, 2019 at 05:24 UTC
For perl6 -e "say 2 0.5": 1.4142135623730951 For perl6 -e "say 2 -1074": 5e-324 Yes, those are the results that perl5 ought also (IMO) be producing - as opposed to the inaccurate "1.4142135623731" and the pointlessly lengthy "4.94065645841247e-324" that are currently output. However, as I mentioned earlier, I can already verify double-precision values by comparing to python3 output. I'm looking for something that will enable me to verify long double-precision and __float128-precision values. (Last time I checked I couldn't find any such builds of perl6.) Cheers, Rob	[reply]