5992e5a177
Two fixes in one: Firstly, replace non-standard __uint64_t with standard (but optional) uint64_t. __uint64_t is not a part of C standard; it is defined by some platforms but might not be present in every environment (e.g. in freestanding build). On the other hand, uint64_t is standard C. It is optional but virtual guaranteed to be present for any 32/64 bit machine. Secondly, mark riscv64 for 128-bit long double in make/cmake files. This fixes cmake build (which detects presence of long double and tries to compile extended functions), and brings make build to do the same. Co-authored-by: Viral B. Shah <ViralBShah@users.noreply.github.com>