* [ruby-core:83339] [Ruby trunk Bug#14026] RUBY ERROR ON DIVISION with FDIV
[not found] <redmine.issue-14026.20171018144953@ruby-lang.org>
@ 2017-10-18 14:49 ` frankapimenta
2017-10-18 14:53 ` [ruby-core:83340] " frankapimenta
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: frankapimenta @ 2017-10-18 14:49 UTC (permalink / raw
To: ruby-core
Issue #14026 has been reported by frankpimenta (Frank Pimenta).
----------------------------------------
Bug #14026: RUBY ERROR ON DIVISION with FDIV
https://bugs.ruby-lang.org/issues/14026
* Author: frankpimenta (Frank Pimenta)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: >2.4
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
~$ ruby -v
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin16]
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.203413367e-314
~$ rvm use 2.4.1
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.1
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.1358685693e-314
~$ rvm use 2.3.5
Using /Users/frankpimenta/.rvm/gems/ruby-2.3.5
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
#<BigDecimal:7fefe380a428,'0.1507692307 6923076923E2',27(36)>
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0")).to_s("F")'
"15.076923076923076923"
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2.0"))'
2.236682878e-314
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2"))'
2.2136573e-314
~$ man ruby
~$ ruby -e 'p Float::MIN'
2.2250738585072014e-308
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2")).class'
Float
~$ ruby -e 'p Float::MAX'
1.7976931348623157e+308
~$
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:83340] [Ruby trunk Bug#14026] RUBY ERROR ON DIVISION with FDIV
[not found] <redmine.issue-14026.20171018144953@ruby-lang.org>
2017-10-18 14:49 ` [ruby-core:83339] [Ruby trunk Bug#14026] RUBY ERROR ON DIVISION with FDIV frankapimenta
@ 2017-10-18 14:53 ` frankapimenta
2017-10-18 14:53 ` [ruby-core:83341] " frankapimenta
2019-06-24 17:35 ` [ruby-core:93336] " merch-redmine
3 siblings, 0 replies; 4+ messages in thread
From: frankapimenta @ 2017-10-18 14:53 UTC (permalink / raw
To: ruby-core
Issue #14026 has been updated by frankpimenta (Frank Pimenta).
~$ ruby -v
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin16]
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.203413367e-314
~$ rvm use 2.4.1
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.1
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.1358685693e-314
~$ rvm use 2.3.5
Using /Users/frankpimenta/.rvm/gems/ruby-2.3.5
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
"#<BigDecimal:7fefe380a428,'0.1507692307 6923076923E2',27(36)>
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0")).to_s("F")'"
"15.076923076923076923"
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2.0"))'
2.236682878e-314
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2"))'
2.2136573e-314
~$ man ruby
~$ ruby -e 'p Float::MIN'
2.2250738585072014e-308
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2")).class'
Float
~$ ruby -e 'p Float::MAX'
1.7976931348623157e+308
----------------------------------------
Bug #14026: RUBY ERROR ON DIVISION with FDIV
https://bugs.ruby-lang.org/issues/14026#change-67299
* Author: frankpimenta (Frank Pimenta)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: >2.4
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
~$ ruby -v
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin16]
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.203413367e-314
~$ rvm use 2.4.1
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.1
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.1358685693e-314
~$ rvm use 2.3.5
Using /Users/frankpimenta/.rvm/gems/ruby-2.3.5
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
#<BigDecimal:7fefe380a428,'0.1507692307 6923076923E2',27(36)>
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0")).to_s("F")'
"15.076923076923076923"
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2.0"))'
2.236682878e-314
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2"))'
2.2136573e-314
~$ man ruby
~$ ruby -e 'p Float::MIN'
2.2250738585072014e-308
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2")).class'
Float
~$ ruby -e 'p Float::MAX'
1.7976931348623157e+308
~$
---Files--------------------------------
Screen Shot 2017-10-18 at 16.50.46.png (205 KB)
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:83341] [Ruby trunk Bug#14026] RUBY ERROR ON DIVISION with FDIV
[not found] <redmine.issue-14026.20171018144953@ruby-lang.org>
2017-10-18 14:49 ` [ruby-core:83339] [Ruby trunk Bug#14026] RUBY ERROR ON DIVISION with FDIV frankapimenta
2017-10-18 14:53 ` [ruby-core:83340] " frankapimenta
@ 2017-10-18 14:53 ` frankapimenta
2019-06-24 17:35 ` [ruby-core:93336] " merch-redmine
3 siblings, 0 replies; 4+ messages in thread
From: frankapimenta @ 2017-10-18 14:53 UTC (permalink / raw
To: ruby-core
Issue #14026 has been updated by frankpimenta (Frank Pimenta).
Screen shot is better for the eye.
----------------------------------------
Bug #14026: RUBY ERROR ON DIVISION with FDIV
https://bugs.ruby-lang.org/issues/14026#change-67300
* Author: frankpimenta (Frank Pimenta)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: >2.4
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
~$ ruby -v
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin16]
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.203413367e-314
~$ rvm use 2.4.1
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.1
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.1358685693e-314
~$ rvm use 2.3.5
Using /Users/frankpimenta/.rvm/gems/ruby-2.3.5
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
#<BigDecimal:7fefe380a428,'0.1507692307 6923076923E2',27(36)>
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0")).to_s("F")'
"15.076923076923076923"
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2.0"))'
2.236682878e-314
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2"))'
2.2136573e-314
~$ man ruby
~$ ruby -e 'p Float::MIN'
2.2250738585072014e-308
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2")).class'
Float
~$ ruby -e 'p Float::MAX'
1.7976931348623157e+308
~$
---Files--------------------------------
Screen Shot 2017-10-18 at 16.50.46.png (205 KB)
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:93336] [Ruby trunk Bug#14026] RUBY ERROR ON DIVISION with FDIV
[not found] <redmine.issue-14026.20171018144953@ruby-lang.org>
` (2 preceding siblings ...)
2017-10-18 14:53 ` [ruby-core:83341] " frankapimenta
@ 2019-06-24 17:35 ` merch-redmine
3 siblings, 0 replies; 4+ messages in thread
From: merch-redmine @ 2019-06-24 17:35 UTC (permalink / raw
To: ruby-core
Issue #14026 has been updated by jeremyevans0 (Jeremy Evans).
Status changed from Open to Feedback
So it looks like there was a behavior change between Ruby 2.3 and 2.4, in that `Integer#fdiv` with a BigDecimal argument used to return BigDecimal instead of Float. However, I consider that change a bug fix, as the documentation for `fdiv` (even in Ruby 2.3) states `Returns float division`. You should get the same results in all cases with the latest releases of Ruby:
```
$ ruby23 -v -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
ruby 2.3.8p459 (2018-10-18 revision 65136) [x86_64-openbsd]
#<BigDecimal:8f824da70d0,'0.1507692307 6923076923E2',27(36)>
$ ruby23 -v -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0")).to_f'
ruby 2.3.8p459 (2018-10-18 revision 65136) [x86_64-openbsd]
15.076923076923077
$ ruby24 -v -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
ruby 2.4.6p354 (2019-04-01 revision 67394) [x86_64-openbsd]
15.076923076923077
$ ruby25 -v -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
ruby 2.5.5p157 (2019-03-15 revision 67260) [x86_64-openbsd]
15.076923076923077
$ ruby26 -v -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-openbsd]
15.076923076923077
$ ruby27 -v -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
ruby 2.7.0preview1 (2019-05-31 trunk c55db6aa271df4a689dc8eb0039c929bf6ed43ff) [x86_64-openbsd]
15.076923076923077
```
Can you check and see if you still are having the same problems with the most recent release of Ruby 2.4 or a later version of Ruby?
----------------------------------------
Bug #14026: RUBY ERROR ON DIVISION with FDIV
https://bugs.ruby-lang.org/issues/14026#change-78819
* Author: frankpimenta (Frank Pimenta)
* Status: Feedback
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: >2.4
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
~$ ruby -v
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin16]
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.203413367e-314
~$ rvm use 2.4.1
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.1
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
2.1358685693e-314
~$ rvm use 2.3.5
Using /Users/frankpimenta/.rvm/gems/ruby-2.3.5
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0"))'
#<BigDecimal:7fefe380a428,'0.1507692307 6923076923E2',27(36)>
~$ ruby -rbigdecimal -e 'p 196.fdiv(BigDecimal("13.0")).to_s("F")'
"15.076923076923076923"
~$ rvm use 2.4.2
Using /Users/frankpimenta/.rvm/gems/ruby-2.4.2
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2.0"))'
2.236682878e-314
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2"))'
2.2136573e-314
~$ man ruby
~$ ruby -e 'p Float::MIN'
2.2250738585072014e-308
~$ ruby -rbigdecimal -e 'p 4.fdiv(BigDecimal("2")).class'
Float
~$ ruby -e 'p Float::MAX'
1.7976931348623157e+308
~$
---Files--------------------------------
Screen Shot 2017-10-18 at 16.50.46.png (205 KB)
--
https://bugs.ruby-lang.org/
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2017-10-18 14:49 ` [ruby-core:83339] [Ruby trunk Bug#14026] RUBY ERROR ON DIVISION with FDIV frankapimenta
2017-10-18 14:53 ` [ruby-core:83340] " frankapimenta
2017-10-18 14:53 ` [ruby-core:83341] " frankapimenta
2019-06-24 17:35 ` [ruby-core:93336] " merch-redmine
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