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On my CentOS 5 box, in a C++ program that does much arithmetic, including numerous matrix multiplications, I have a situation in in which the result depends on the nature of nearby I/O. Thus, with all arithmetic done with type double, and where values are mostly in the range [-1.0e0,+1.0e0] or nearby, I do: cerr << "some stuff" << endl; mat3 = matmult(mat1,mat2); I

On 04/02/2024 19:41, Holger Hoefling wrote: > Hi, > > I wanted to ask if people have good advice on how to debug M1Mac package > check errors when you don?t have a Mac? Is a cloud machine the best option > or is there something else? I presumed this was about a CRAN package, possibly hdf5r which has a R-devel-only warning from the Apple clang compiler. And that is not a

Hi Tim, Thanks for the hint. I tried the following, (it's a C interface since that's what I need it for) where a and b are the top and bottom halves of the 128 bit value, LLVMValueRef TestConst(LLVMContextRef C, uint64_t a, uint64_t b) { Type *ty = Type::getFP128Ty(*unwrap(C)); ArrayRef<uint64_t> ar[2] = {a,b}; APInt ai(128,*ar); APFloat quad(APFloat::IEEEquad(), ai);

Hi, Just wondering if it's possible to construct a 128 bit quad precision floating point constant without converting the value back to a string. Cheers Peter -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20190410/a527f240/attachment.html>