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BigDecimal, jacobian dfdxi function gets stuck in an infinite loop #8

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BigDecimal, jacobian dfdxi function gets stuck in an infinite loop #8

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17e1cca
BigDecimal, jacobian dfdxi function gets stuck in an infinite loopwhe…
alperakgun May 30, 2012
19cc26a
Doc typo? BigDecimal jacobian and NLsolve documentation Function doc …
alperakgun May 30, 2012
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3 changes: 2 additions & 1 deletion ext/bigdecimal/lib/bigdecimal/jacobian.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@
#
# f.zero:: returns 0.0
# f.one:: returns 1.0
# f.two:: returns 1.0
# f.two:: returns 2.0
# f.ten:: returns 10.0
#
# f.eps:: returns the convergence criterion (epsilon value) used to determine whether two values are considered equal. If |a-b| < epsilon, the two values are considered equal.
Expand Down Expand Up @@ -53,6 +53,7 @@ def dfdxi(f,fx,x,i)
until ok>0 do
s = f.zero
deriv = []
nRetry += 1
if(nRetry>100) then
raise "Singular Jacobian matrix. No change at x[" + i.to_s + "]"
end
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2 changes: 1 addition & 1 deletion ext/bigdecimal/lib/bigdecimal/newton.rb
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Expand Up @@ -18,7 +18,7 @@
#
# f.zero:: returns 0.0
# f.one:: returns 1.0
# f.two:: returns 1.0
# f.two:: returns 2.0
# f.ten:: returns 10.0
#
# f.eps:: returns the convergence criterion (epsilon value) used to determine whether two values are considered equal. If |a-b| < epsilon, the two values are considered equal.
Expand Down