Re^3: [Raku] Arcane treatment of doubles and rationals

There is a loss of precision happening when using the exponential form.

$ raku -e "dd 0.10000000000000006e0"
0.10000000000000006e0
$ raku -e "dd 0.100000000000000006e0"
0.1e0
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The exponential form creates a Num which needs to be between -1.7976931348623157e308 to 1.7976931348623158e308. See what Raku considers Infinity.

holli

You can lead your users to water, but alas, you cannot drown them.

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Re^4: [Raku] Arcane treatment of doubles and rationals by syphilis (Archbishop) on Apr 04, 2021 at 13:26 UTC
I'd consider this a bug Yes, I think there's something that's definitely not right. For a start, there's never any need to assign an 18-significant-digit (decimal) value to a double. Whatever value is assigned to a double by the 18-siginificant-digit 0.100000000000000006 will also be assigned by the 17-significant-digit 0.10000000000000001. As I said (in the reply to myself that I posted shortly after your post), I will raise the issues with them. Cheers, Rob	[reply]
Re^5: [Raku] Arcane treatment of doubles and rationals by holli (Abbot) on Apr 04, 2021 at 13:34 UTC
there's never any need to assign an 18-significant-digit (decimal) value to a double You are forcing that by using an exponent. holli You can lead your users to water, but alas, you cannot drown them.	[reply]