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Cleaner implementation of dont_over_optimize.

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This commit is contained in:
Christoph Hertzberg 2016-05-27 11:13:38 +02:00
parent 22a035db95
commit f2c86384f4
1 changed files with 3 additions and 2 deletions
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5
test/geo_transformations.cpp
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@ -19,8 +19,9 @@ Matrix<T,2,1> angleToVec(T a)
} }
// This permits to workaround a bug in clang/llvm code generation. // This permits to workaround a bug in clang/llvm code generation.
template<typename T>
EIGEN_DONT_INLINE EIGEN_DONT_INLINE
void dont_over_optimize(void* x) { *(int*)(x) = ((*(int*)(x))&0xFFFF0000) | ((*(int*)(x))&0x0000FFFF); } void dont_over_optimize(T& x) { volatile typename T::Scalar tmp = x(0); x(0) = tmp; }
template<typename Scalar, int Mode, int Options> void non_projective_only() template<typename Scalar, int Mode, int Options> void non_projective_only()
{ {
@ -228,7 +229,7 @@ template<typename Scalar, int Mode, int Options> void transformations()
do { do {
v3 = Vector3::Random(); v3 = Vector3::Random();
dont_over_optimize(&v3); dont_over_optimize(v3);
} while (v3.cwiseAbs().minCoeff()<NumTraits<Scalar>::epsilon()); } while (v3.cwiseAbs().minCoeff()<NumTraits<Scalar>::epsilon());
Translation3 tv3(v3); Translation3 tv3(v3);
Transform3 t5(tv3); Transform3 t5(tv3);