std: Implement hex float printing

The results have been cross-checked with LLVM's APFloat implementation
by randomly sampling the f32/f64 space, while the f16 one was completely
checked given the small size.
9d409233b2LemonBoy committed on 5/5/2021, 4:37:40 PM· committed by Andrew Kelleyparent18b4648
1 file changedLine totals unavailable