Re: Parsing timestamps?

anton@mips.complang.tuwien.ac.at (Anton Ertl) writes:

So just use the same implementations of transcentental functions, and
your results will be bit-identical

Same implementations = same FP operations in the exact same order?  That
seems hard to ensure, if the functions are implemented in a language
that leaves anything up to a compiler.

Also, in the early implementations x87, 68881, NS320something(?),
transcententals were included in the coprocessor and the workings
weren't visible.  There is a proposal to add this to RISC-V
(https://libre-soc.org/ztrans_proposal/).  It looks like there was an
AVX-512 ER subset that also does transcententals, but it only appeared
on some Xeon Phi processors now discontinued (per Wikipedia article on
AVX).  No idea about other processors.