Merge pull request #488 from sloretz/sfinae_NumpyEquivalentType

Fix error: redefinition of ‘struct eigenpy::NumpyEquivalentType<...

Author: jcarpent

CHANGELOG.md

@@ -11,6 +11,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Fixed
 - Remove CMake CMP0167 warnings ([#487](https://github.com/stack-of-tasks/eigenpy/pull/487))
+- Fix compilation error on armhf ([#488](https://github.com/stack-of-tasks/eigenpy/pull/488))
 
 ## [3.7.0] - 2024-06-11
 

include/eigenpy/numpy.hpp

@@ -55,7 +55,7 @@ void EIGENPY_DLLAPI import_numpy();
 int EIGENPY_DLLAPI PyArray_TypeNum(PyTypeObject* type);
 
 // By default, the Scalar is considered as a Python object
-template <typename Scalar>
+template <typename Scalar, typename Enable = void>
 struct NumpyEquivalentType {
   enum { type_code = NPY_USERDEF };
 };
@@ -139,12 +139,19 @@ struct NumpyEquivalentType<unsigned long> {
 // See https://github.com/stack-of-tasks/eigenpy/pull/455
 #if defined __linux__
 
-template <>
-struct NumpyEquivalentType<long long> {
+#include <type_traits>
+
+template <typename Scalar>
+struct NumpyEquivalentType<
+    Scalar, std::enable_if_t<!std::is_same<int64_t, long long>::value &&
+                             std::is_same<Scalar, long long>::value> > {
   enum { type_code = NPY_LONGLONG };
 };
-template <>
-struct NumpyEquivalentType<unsigned long long> {
+template <typename Scalar>
+struct NumpyEquivalentType<
+    Scalar,
+    std::enable_if_t<!std::is_same<uint64_t, unsigned long long>::value &&
+                     std::is_same<Scalar, unsigned long long>::value> > {
   enum { type_code = NPY_ULONGLONG };
 };