Refactor sliceMultiply in C++ code of the python wrapper to make it available for GPU too.

wrapper/python/src/FaustCoreCpp.hpp

@@ -712,3 +712,11 @@ FPP FaustCoreCpp<FPP,DEV>::get_item(unsigned long int i, unsigned long int j)
     return transform->get_item(i, j);
 }
 
+template<typename FPP, FDevice DEV>
+void FaustCoreCpp<FPP, DEV>::colSliceMultiply(unsigned long int j1, unsigned long int j2, const FPP* data, unsigned long int data_ncols, FPP* out) const
+{
+    Faust::Slice s[2];
+    s[0] = Faust::Slice(0, this->transform->getNbRow());
+    s[1] = Faust::Slice(j1, j2);
+    this->transform->sliceMultiply(s, data, out, data_ncols);
+}

wrapper/python/src/FaustCoreCppCPU.cpp.in

@@ -138,16 +138,6 @@ FaustCoreCpp<@TYPE@,Cpu>* FaustCoreCpp<@TYPE@,Cpu>::read_from_mat_file(const cha
     return core;
 }
 
-template<>
-void FaustCoreCpp<@TYPE@,Cpu>::colSliceMultiply(unsigned long int j1, unsigned long int j2, const @TYPE@* data, unsigned long int data_ncols, @TYPE@* out) const
-{
-    Faust::MatDense<@TYPE@, Cpu> y;
-    Faust::Slice s[2];
-    s[0] = Faust::Slice(0, this->transform->getNbRow());
-    s[1] = Faust::Slice(j1, j2);
-    this->transform->sliceMultiply(s, data, out, data_ncols);
-}
-
 template<>
 void FaustCoreCpp<@TYPE@,Cpu>::indexMultiply(unsigned long int* d0_ids, size_t d0_ids_len, unsigned long int* d1_ids, size_t d1_ids_len, const @TYPE@* mat_data, int mat_ncols, @TYPE@* mat_out) const
 {

wrapper/python/src/FaustCoreCppGPU.cpp.in

@@ -105,12 +105,6 @@ FaustCoreCpp<@TYPE@,GPU2>* FaustCoreCpp<@TYPE@,GPU2>::read_from_mat_file(const c
     return nullptr;
 }
 
-template<>
-void FaustCoreCpp<@TYPE@,GPU2>::colSliceMultiply(unsigned long int j1, unsigned long int j2, const @TYPE@* data, unsigned long int data_ncols, @TYPE@* out) const
-{
-    throw std::runtime_error("colSliceMultiply is not yet supported on GPU");
-}
-
 template<>
 void FaustCoreCpp<@TYPE@,GPU2>::indexMultiply(unsigned long int* d0_ids, size_t d0_ids_len, unsigned long int* d1_ids, size_t d1_ids_len, const @TYPE@* mat_data, int mat_ncols, @TYPE@* mat_out) const
 {