std.{fmt, math}: derive float constants from std

This also addresses a nit from #10133 where IntT might be a confusing
name because it might imply signed integer (iX, not uX). We settled on
TBits for math/float.zig so I've applied that change here too.

When I originally wrote ldexp() I copied the name from parse_hex_float.
7b7f45dc2aviri committed on 4/6/2022, 1:50:36 PM· committed by Isaac Freundparentcb019b8
2 files changedLine totals unavailable