makeIdentity() [3/4]

template<typename Scalar >

void syten::makeIdentity ( DenseTensor< 4, Scalar > &  a )

inline

Makes a rank-4 tensor a doubled identity tensor, \( A_{ijkl} = 1 \mathrm{\; if\; } i \equiv j \wedge k \equiv l \mathrm{\; else\; } 0 \).

References syten::DenseTensor< rank, Scalar >::dim(), and SYTEN_ASSERT_DEBUG.

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