[Code] Extern C logic fixes for C compiler

Author: EgorOrachyov

cubool/include/cubool/cubool.h

@@ -32,7 +32,11 @@
 #endif
 
 // Preserve C names in shared library
-#define CUBOOL_EXPORT extern "C"
+#ifdef __cplusplus
+    #define CUBOOL_EXPORT extern "C"
+#else
+    #define CUBOOL_EXPORT
+#endif
 
 // Exporting/importing symbols for Microsoft Visual Studio
 #if (_MSC_VER && !__INTEL_COMPILER)

cubool/sources/cuda/matrix_csr.cu

@@ -24,7 +24,6 @@
 
 #include <cuda/matrix_csr.hpp>
 #include <core/error.hpp>
-#include <utils/exclusive_scan.hpp>
 #include <utils/timer.hpp>
 #include <algorithm>
 
@@ -96,7 +95,7 @@ namespace cubool {
         return mMatrixImpl.m_vals == 0;
     }
 
-    void MatrixCsr::transferToDevice(const std::vector<index> &rowOffsets, const std::vector<index> &colIndices) {
+    void MatrixCsr::transferToDevice(const std::vector<index> &rowOffsets, const std::vector<index> &colIndices) const {
         // Create device buffers and copy data from the cpu side
         thrust::device_vector<index, DeviceAlloc<index>> rowsDeviceVec(rowOffsets.size());
         thrust::device_vector<index, DeviceAlloc<index>> colsDeviceVec(colIndices.size());

cubool/sources/cuda/matrix_csr.hpp

@@ -65,7 +65,7 @@ namespace cubool {
         void clearAndResizeStorageToDim() const;
         bool isStorageEmpty() const;
         bool isMatrixEmpty() const;
-        void transferToDevice(const std::vector<index> &rowOffsets, const std::vector<index> &colIndices);
+        void transferToDevice(const std::vector<index> &rowOffsets, const std::vector<index> &colIndices) const;
         void transferFromDevice(std::vector<index> &rowOffsets, std::vector<index> &colIndices) const;
 
         // Uses nsparse csr matrix implementation as a backend