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This channel is intended for people just starting with the Raku Programming Language (raku.org). Logs are available at irclogs.raku.org/raku-beginner/live.html Set by lizmat on 8 June 2022. |
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| QhpAptyj9hj0RQwM | Hey, is there any way to set the number of significant figures/decimal places I want Raku to use? | 17:46 | |
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| QhpAptyj9hj0RQwM | The value I'm getting for 2.8284271247462 - 2.8284271247461903 is 0 | 17:47 | |
| Nemokosch | m: say(2.8284271247462 - 2.8284271247461903) | 17:48 | |
| Raku eval | 0.0000000000000097 | ||
| Nemokosch | what is your code exactly, good sir? | 17:49 | |
| QhpAptyj9hj0RQwM | So I'm doing exercise 6.1 in Think Raku, and the value is 0 when it's inside the function | ||
| It's also 0 when I do: | 17:50 | ||
| my $x = my-sqrt(8); my $y = sqrt(8); say $x; say $y; say $x - $y; | |||
| Nemokosch | m: sqrt(8).WHAT.say | 17:51 | |
| Raku eval | (Num) | ||
| Nemokosch | perhaps that's why. a Num is just a good old floating-point value with the usual implications | ||
| QhpAptyj9hj0RQwM | Ah, okay. I thought all numbers in Raku used the numerator/denominator thing | 17:52 | |
| Thanks | |||
| Nemokosch | if you think about it, sqrt(8) is irrational so it wouldn't work any better. Another reason for floating-point numbers to still exist is performance: they are way faster than two integers "kept in sync" | 17:54 | |
| teatwo | floats kinda are two integers kept in sync. but it's h/w accelerated. :) | 17:57 | |
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