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Backout parts of changeset 6719e56b5b

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Gael Guennebaud
2013-08-11 19:26:41 +02:00
parent bffdc491b3
commit 916d29e58f
2 changed files with 2 additions and 2 deletions
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2
unsupported/Eigen/src/MatrixFunctions/MatrixPower.h
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@@ -299,7 +299,7 @@ MatrixPowerAtomic<MatrixType>::computeSuperDiag(const ComplexScalar& curr, const
ComplexScalar logCurr = log(curr);
ComplexScalar logPrev = log(prev);
int unwindingNumber = ceil((numext::imag(logCurr - logPrev) - M_PI) / (2*M_PI));
ComplexScalar w = numext::atanh2(curr - prev, curr + prev) + ComplexScalar(RealScalar(0), RealScalar(M_PI*unwindingNumber));
ComplexScalar w = numext::atanh2(curr - prev, curr + prev) + ComplexScalar(0, M_PI*unwindingNumber);
return RealScalar(2) * exp(RealScalar(0.5) * p * (logCurr + logPrev)) * sinh(p * w) / (curr - prev);
}