Re: Floating point issue

Thank you, guys.

I'll use sprintf as a workaround...

Comment on Re: Floating point issue

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Re^2: Floating point issue by Laurent_R (Canon) on Aug 14, 2016 at 08:14 UTC
A more accurate alternative might be to use integer arithmetic: `$ perl -E '$c = -71123456; for my $i (0..19) {say $c/1000000; $c += 10 +000}' -71.123456 -71.113456 -71.103456 -71.093456 -71.083456 -71.073456 -71.063456 -71.053456 -71.043456 -71.033456 -71.023456 -71.013456 -71.003456 -70.993456 -70.983456 -70.973456 -70.963456 -70.953456 -70.943456 -70.933456` [download] You might also consider using the arbitrary big rational number module (Math::BigRat) or possibly the big float module (Math::BigFloat). Math::BigRat is accurate because it basically does integer arithmetic under the hood.	[reply] [d/l]

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Re^2: Floating point issue
by Laurent_R (Canon) on Aug 14, 2016 at 08:14 UTC

$ perl -E '$c = -71123456; for my $i (0..19) {say $c/1000000; $c += 10
+000}'
-71.123456
-71.113456
-71.103456
-71.093456
-71.083456
-71.073456
-71.063456
-71.053456
-71.043456
-71.033456
-71.023456
-71.013456
-71.003456
-70.993456
-70.983456
-70.973456
-70.963456
-70.953456
-70.943456
-70.933456
[download]

Math::BigRat

Math::BigFloat

Math::BigRat is accurate because it basically does integer arithmetic under the hood.

[reply]
[d/l]