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Fix fix<N> when variable templates are not supported.

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There were some typos that checked `EIGEN_HAS_CXX14` that should have
checked `EIGEN_HAS_CXX14_VARIABLE_TEMPLATES`, causing a mismatch
in some of the `Eigen::fix<N>` assumptions.

Also fixed the `symbolic_index` test when
`EIGEN_HAS_CXX14_VARIABLE_TEMPLATES` is 0.

Fixes #2308


(cherry picked from commit 5db9e5c77958997856ddbccfa4a52ff22e83bef9)
This commit is contained in:
Antonio Sanchez 2021-08-30 08:06:55 -07:00 committed by Antonio Sánchez
parent 3147391d94
commit 7aee90b8d3
2 changed files with 6 additions and 6 deletions
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6
Eigen/src/Core/util/IntegralConstant.h
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@ -138,7 +138,7 @@ template<int N,int Default> struct get_fixed_value<FixedInt<N>,Default> {
static const int value = N;
};
#if !EIGEN_HAS_CXX14
#if !EIGEN_HAS_CXX14_VARIABLE_TEMPLATES
template<int N,int Default> struct get_fixed_value<FixedInt<N> (*)(),Default> {
static const int value = N;
};
@ -154,7 +154,7 @@ struct get_fixed_value<variable_if_dynamic<T,N>,Default> {
};
template<typename T> EIGEN_DEVICE_FUNC Index get_runtime_value(const T &x) { return x; }
#if !EIGEN_HAS_CXX14
#if !EIGEN_HAS_CXX14_VARIABLE_TEMPLATES
template<int N> EIGEN_DEVICE_FUNC Index get_runtime_value(FixedInt<N> (*)()) { return N; }
#endif
@ -166,7 +166,7 @@ template<typename T, int DynamicKey=Dynamic, typename EnableIf=void> struct clea
// Convert any integral type (e.g., short, int, unsigned int, etc.) to Eigen::Index
template<typename T, int DynamicKey> struct cleanup_index_type<T,DynamicKey,typename internal::enable_if<internal::is_integral<T>::value>::type> { typedef Index type; };
#if !EIGEN_HAS_CXX14
#if !EIGEN_HAS_CXX14_VARIABLE_TEMPLATES
// In c++98/c++11, fix<N> is a pointer to function that we better cleanup to a true FixedInt<N>:
template<int N, int DynamicKey> struct cleanup_index_type<FixedInt<N> (*)(), DynamicKey> { typedef FixedInt<N> type; };
#endif

6
test/symbolic_index.cpp
View File

@ -58,15 +58,15 @@ void check_symbolic_index()
VERIFY( is_same_type( fix<9>()/2, int(9/2) ) );
VERIFY( is_same_symb( lastp1-1, last, size) );
VERIFY( is_same_symb( lastp1-fix<1>, last, size) );
VERIFY( is_same_symb( lastp1-fix<1>(), last, size) );
VERIFY_IS_EQUAL( ( (last*5-2)/3 ).eval(last=size-1), ((size-1)*5-2)/3 );
VERIFY_IS_EQUAL( ( (last*fix<5>-fix<2>)/fix<3> ).eval(last=size-1), ((size-1)*5-2)/3 );
VERIFY_IS_EQUAL( ( (last*fix<5>()-fix<2>())/fix<3>() ).eval(last=size-1), ((size-1)*5-2)/3 );
VERIFY_IS_EQUAL( ( -last*lastp1 ).eval(last=size-1), -(size-1)*size );
VERIFY_IS_EQUAL( ( lastp1-3*last ).eval(last=size-1), size- 3*(size-1) );
VERIFY_IS_EQUAL( ( (lastp1-3*last)/lastp1 ).eval(last=size-1), (size- 3*(size-1))/size );
#if EIGEN_HAS_CXX14
#if EIGEN_HAS_CXX14_VARIABLE_TEMPLATES
{
struct x_tag {}; static const symbolic::SymbolExpr<x_tag> x;
struct y_tag {}; static const symbolic::SymbolExpr<y_tag> y;