diff options
| author | mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-05-30 07:26:51 +0000 |
|---|---|---|
| committer | mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-05-30 07:26:51 +0000 |
| commit | ecb6bd90c01edc19165ff526ef15a59693b4f12f (patch) | |
| tree | 3de11687882262cc3840c1231187c574d9a71b6a /ext/bigdecimal/lib/bigdecimal | |
| parent | 18805586d9a524f0a351a1affd950e50166ed5e0 (diff) | |
* 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
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35843 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/bigdecimal/lib/bigdecimal')
| -rw-r--r-- | ext/bigdecimal/lib/bigdecimal/jacobian.rb | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/ext/bigdecimal/lib/bigdecimal/jacobian.rb b/ext/bigdecimal/lib/bigdecimal/jacobian.rb index 8ab836259a..f53e5b1437 100644 --- a/ext/bigdecimal/lib/bigdecimal/jacobian.rb +++ b/ext/bigdecimal/lib/bigdecimal/jacobian.rb @@ -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 |