Hi Zane,
The predefined type should be in the form of H5::PredType::NATIVE_FLOAT, not H5::H5T_NATIVE_FLOAT. I'm surprised it passed the compilation. Does FloatType::FloatType( const PredType& pred_type ) work for you? Binh-Minh _____ From: [email protected] [mailto:[email protected]] On Behalf Of Zhengying Wang Sent: Wednesday, January 04, 2012 5:04 AM To: '[email protected]' Subject: [Hdf-forum] Construct H5::DataType with predefined datatype in C++1.8.6 Hi, I'm in the process to upgrade our application from 1.6.5 to 1.8.6. I have noticed the constructor of H5::DataType (hitd_t existing_id, bool predefined) has changed to H5::DataType (hitd_t existing_id). The interface changes do make sense from the point view of users, however I have problem to create an object with the predefined datatype - Here is a very simple example: #include <H5cpp.h> int main () { H5::DataType (H5::H5T_NATIVE_FLOAT); return 0; } The destructor complains with the following errors: DataType::~DataType - H5Tclose failed HDF5-DIAG: Error detected in HDF5 (1.8.6) thread 140429119538976: #000: H5T.c line 1723 in H5Tclose(): immutable datatype major: Invalid arguments to routine minor: Bad value DataType::~DataType - H5Tclose failed I also tried to the following code: #include <H5cpp.h> int main () { H5::DataType (H5::PredType::NATIVE_FLOAT); return 0; } The code works for 1.8.6 but not 1.6.5 unfortunately. Here are the errors when trying to insert the object to a compound datatype. HDF5-DIAG: Error detected in HDF5 library version: 1.6.5 thread 3077396992. Back trace follows. #000: H5Tcompound.c line 351 in H5Tinsert(): not a datatype major(01): Function arguments minor(03): Inappropriate type H5Tinsert failed Could anyone please instruct a proper way to construct H5::DataType with the predefined datatype? It'd be nice if the code can work in both 1.6.5 and 1.8.6. Thanks, Zane
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