ref: c79e884fc2aedd7695d73b1f0e5fe8059cb451d3
dir: /lib/math/bld.sub/
lib math = fpmath.myr # trunc, floor, ceil fpmath-trunc-impl+posixy-x64-sse4.s fpmath-trunc-impl.myr # summation fpmath-sum-impl.myr # fused-multiply-add fpmath-fma-impl.myr lib ../std:std ;;