Bug #15544: sprintf returns an unexpected string

• Status: Rejected
• Assignee: -
• Target version: -
• ruby -v: ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-linux]
• Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN

[areman01 (André Kullmann)]

Hello,

I've a little problem with the sprintf function. It returns unexpected results ( in my opinion )

sprintf("%.16g", 8.78)
# returns "8.779999999999999"
# my expected result is "8.78"

Can somebody explain this behavior to me ?

Best Begards

[shevegen (Robert A. Heiler)]

You should use the bugtracker primarily for ruby-related problems, issues and so forth. For questions
about C not directly related to the ruby implementation, stackoverflow may be a better site.

[shyouhei (Shyouhei Urabe)]

• Status changed from Open to Rejected

Please visit https://bugs.ruby-lang.org/ and read the FAQ part.
Next time consider doing so before posting an issue.