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Fix compilation of stableNorm with some expressions as input

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(grafted from 06bf1047f99afec61062e188ec4e68efbf203d86
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This commit is contained in:
Gael Guennebaud 2017-12-15 15:15:37 +01:00
parent bb28a2aada
commit 33b972d8b3
2 changed files with 11 additions and 1 deletions
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2
Eigen/src/Core/StableNorm.h
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@ -165,7 +165,7 @@ MatrixBase<Derived>::stableNorm() const
typedef typename internal::nested_eval<Derived,2>::type DerivedCopy;
typedef typename internal::remove_all<DerivedCopy>::type DerivedCopyClean;
DerivedCopy copy(derived());
const DerivedCopy copy(derived());
enum {
CanAlign = ( (int(DerivedCopyClean::Flags)&DirectAccessBit)

10
test/stable_norm.cpp
View File

@ -65,6 +65,8 @@ template<typename MatrixType> void stable_norm(const MatrixType& m)
factor = internal::random<Scalar>();
Scalar small = factor * ((std::numeric_limits<RealScalar>::min)() * RealScalar(1e4));
Scalar one(1);
MatrixType vzero = MatrixType::Zero(rows, cols),
vrand = MatrixType::Random(rows, cols),
vbig(rows, cols),
@ -78,6 +80,14 @@ template<typename MatrixType> void stable_norm(const MatrixType& m)
VERIFY_IS_APPROX(vrand.blueNorm(), vrand.norm());
VERIFY_IS_APPROX(vrand.hypotNorm(), vrand.norm());
// test with expressions as input
VERIFY_IS_APPROX((one*vrand).stableNorm(), vrand.norm());
VERIFY_IS_APPROX((one*vrand).blueNorm(), vrand.norm());
VERIFY_IS_APPROX((one*vrand).hypotNorm(), vrand.norm());
VERIFY_IS_APPROX((one*vrand+one*vrand-one*vrand).stableNorm(), vrand.norm());
VERIFY_IS_APPROX((one*vrand+one*vrand-one*vrand).blueNorm(), vrand.norm());
VERIFY_IS_APPROX((one*vrand+one*vrand-one*vrand).hypotNorm(), vrand.norm());
RealScalar size = static_cast<RealScalar>(m.size());
// test numext::isfinite