[#47386] [Backport92 - Backport #6958][Open] buggy BigDecimal#integer? — "adrianomitre (Adriano Mitre)" <adriano.mitre@...>
7 messages
2012/09/01
[#47409] [ruby-trunk - Feature #6973][Open] Add an #integral? method to Numeric to test for whole-number values — "regularfry (Alex Young)" <alex@...>
12 messages
2012/09/03
[#47444] [ruby-trunk - Bug #6986][Open] Inconsistent result of BigDecimal#power — "phasis68 (Heesob Park)" <phasis@...>
7 messages
2012/09/06
[#47453] [ruby-trunk - Bug #6994][Open] yield plus splat unwraps too much — "headius (Charles Nutter)" <headius@...>
8 messages
2012/09/07
[#47460] [ruby-trunk - Bug #6997][Open] Improve documentation for OptionParser — "eike.rb (Eike Dierks)" <eike@...>
7 messages
2012/09/08
[#47465] [ruby-trunk - Feature #7003][Assigned] Please decide. MVM to be with 2.0? — "shyouhei (Shyouhei Urabe)" <shyouhei@...>
3 messages
2012/09/10
[#47523] [ruby-trunk - Feature #7022][Open] add event hook for garbage collection — "rogerdpack (Roger Pack)" <rogerpack2005@...>
7 messages
2012/09/14
[#47531] [ruby-trunk - Feature #7022] add event hook for garbage collection
— "rogerdpack (Roger Pack)" <rogerpack2005@...>
2012/09/14
[#47540] autoload & require — Xavier Noria <fxn@...>
Hi,
4 messages
2012/09/15
[#47562] feature request: thread pool class — Roger Pack <rogerdpack2@...>
It has always seemed a bit odd to me that Ruby's sdlib doesn't have some kind of
4 messages
2012/09/17
[#47638] [ruby-trunk - Bug #7046][Open] ERB#run and ERB#result are not safe for concurrent use — "headius (Charles Nutter)" <headius@...>
11 messages
2012/09/21
[#47653] [ruby-trunk - Bug #7050][Open] encoding of String#unpack for 'H', 'h', 'B' and 'b' — "Eregon (Benoit Daloze)" <redmine@...>
6 messages
2012/09/22
[#47655] [ruby-trunk - Feature #7051][Open] Extend caller_locations API to include klass and bindings. Allow caller_locations as a method hanging off Thread. — "sam.saffron (Sam Saffron)" <sam.saffron@...>
13 messages
2012/09/23
[#47709] [ruby-trunk - Bug #7076][Open] TestUnicodeEscape#test_basic failure on Windows — "h.shirosaki (Hiroshi Shirosaki)" <h.shirosaki@...>
4 messages
2012/09/27
[#47719] [ruby-trunk - Bug #7082][Open] Process.kill 0 in windows can return spurious success — "rogerdpack (Roger Pack)" <rogerpack2005@...>
6 messages
2012/09/28
[#47730] [ruby-trunk - Bug #7085][Open] Subversion → GitHub gateway stops. — "shyouhei (Shyouhei Urabe)" <shyouhei@...>
27 messages
2012/09/29
[#47731] [ruby-trunk - Bug #7085] Subversion → GitHub gateway stops.
— "shyouhei (Shyouhei Urabe)" <shyouhei@...>
2012/09/29
[#47743] Re: [ruby-trunk - Bug #7085] Subversion → GitHub gateway stops.
— Evan Phoenix <evan@...>
2012/09/29
Hello shyouhei, =20
[#47746] Re: [ruby-trunk - Bug #7085] Subversion → GitHub gateway stops.
— Urabe Shyouhei <shyouhei@...>
2012/09/30
On 09/30/2012 02:33 AM, Evan Phoenix wrote:
[#48020] [ruby-trunk - Bug #7085] Subversion → GitHub gateway stops.
— "shyouhei (Shyouhei Urabe)" <shyouhei@...>
2012/10/16
[#48953] [ruby-trunk - Bug #7085] Subversion → GitHub gateway stops.
— "shyouhei (Shyouhei Urabe)" <shyouhei@...>
2012/11/05
[#49123] Re: [ruby-trunk - Bug #7085] Subversion → GitHub gateway stops.
— Evan Phoenix <evan@...>
2012/11/08
So sorry for the continual delay. I'm setting this up right now but it ap=
[#47735] [ruby-trunk - Bug #7087][Open] ::ConditionVariable#wait does not work with Monitor because Monitor#sleep does not exist — "rklemme (Robert Klemme)" <shortcutter@...>
10 messages
2012/09/29
[ruby-core:47448] [ruby-trunk - Bug #6986] Inconsistent result of BigDecimal#power
From:
"phasis68 (Heesob Park)" <phasis@...>
Date:
2012-09-06 09:19:37 UTC
List:
ruby-core #47448
Issue #6986 has been updated by phasis68 (Heesob Park).
Could you try "p BigDecimal('1e-10').power(1e50)" ?
On Windows, the parameter higher than 1e19 returns Infinity instead of 0.0.
Here is a patch of NoMemoryError on Windows.
diff --git a/bigdecimal.c b/bigdecimal.c.new
index e798781..976503b 100644
--- a/bigdecimal.c
+++ b/bigdecimal.c.new
@@ -2184,7 +2184,7 @@ retry:
if (exp != NULL) {
return rmpd_power_by_big_decimal(x, exp, n);
}
- else if (TYPE(vexp) == T_BIGNUM) {
+ else if (TYPE(vexp) == T_BIGNUM || FIX2INT(vexp)>=10000000) {
VALUE abs_value = BigDecimal_abs(self);
if (is_one(abs_value)) {
return ToValue(VpCreateRbObject(n, "1"));
----------------------------------------
Bug #6986: Inconsistent result of BigDecimal#power
https://bugs.ruby-lang.org/issues/6986#change-29206
Author: phasis68 (Heesob Park)
Status: Assigned
Priority: Normal
Assignee: mrkn (Kenta Murata)
Category: ext
Target version:
ruby -v: ruby 2.0.0dev (2012-09-05 trunk 36913) [i386-mswin32_100]
I found BigDecimal#power returns incorrect result for a large value.
C:\tmp>ruby -rbigdecimal -e "p BigDecimal('1e-10').power(1e7)"
#<BigDecimal:a2bdb8,'0.1E-99999999',9(100000026)>
C:\tmp>ruby -rbigdecimal -e "p BigDecimal('1e-10').power(1e8)"
-e:1:in `power': failed to allocate memory (NoMemoryError)
from -e:1:in `<main>'
C:\tmp>ruby -rbigdecimal -e "p BigDecimal('1e-10').power(1e10)"
#<BigDecimal:f7cb3c,'0.0',9(18)>
C:\tmp>ruby -rbigdecimal -e "p BigDecimal('1e-10').power(1e19)"
#<BigDecimal:f7cb3c,'Infinity',9(18)>
--
http://bugs.ruby-lang.org/