Hi, I'm sure that this question has come up many times before. When I load an R extension dll I've built with the Microsoft compiler, I get the warning:
Warning message: DLL attempted to change FPU control word from 8001f to 9001f So, what I did to try to fix the problem (to my knowledge, Microsoft will not support compile time switching of floating point control until version 8.0 of their compiler - see: http://blogs.msdn.com/ericflee) was to place the following statement inside R_init_mylib: _controlfp(_MCW_PC, _PC_64); // use extended precision for operations in x87 FPU This didn't fix my problem. I ended up sprinkling these liberally throughout my code, but that didn't help. One thing I do like about the Microsoft compiler is the debugging facility. But, I'll definitely switch to gcc if this is necessary to get rid of the problem. Thanks, Chris Paulse [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
