Gael Guennebaud 4126cb6369 Fix SparseLU::absDeterminant and add respective unit test
(grafted from a370b1f2e20804f0b99bcda1c3940f00300e4f90
)
2014-10-17 16:52:56 +02:00
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2012-06-13 18:26:05 +02:00