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* ext/bigdecimal/lib/bigdecimal/jacobian.rb (Jacobian#dfdxi):

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fix jacobian to get stuck in an infinite loop when a solution is not
  found due to forget to increment nRetry counter.
  Patch by alperakgun from github.com/shyouhei/ruby/pull/8

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35843 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
mrkn 2012-05-30 07:26:51 +00:00
parent 18805586d9
commit ecb6bd90c0
2 changed files with 9 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
Wed May 30 16:20:00 2012 Kenta Murata <mrkn@cookpad.com>
* ext/bigdecimal/lib/bigdecimal/jacobian.rb (Jacobian#dfdxi):
fix jacobian to get stuck in an infinite loop when a solution is not
found due to forget to increment nRetry counter.
Patch by alperakgun from github.com/shyouhei/ruby/pull/8
Wed May 30 10:58:31 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
* time.c (utc_offset_arg): utc offset can be precision in seconds.

3
ext/bigdecimal/lib/bigdecimal/jacobian.rb
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@ -53,7 +53,8 @@ module Jacobian
until ok>0 do
s = f.zero
deriv = []
if(nRetry>100) then
nRetry += 1
if nRetry > 100
raise "Singular Jacobian matrix. No change at x[" + i.to_s + "]"
end
dx = dx*f.two