[libre-riscv-dev] [isa-dev] Re: FP transcendentals (trigonometry, root/exp/log) proposal
luke.leighton at gmail.com
Thu Aug 8 15:01:15 BST 2019
On Thu, Aug 8, 2019 at 11:00 AM Andrew Waterman <andrew at sifive.com> wrote:
>> wait... hang on: there are now *four* potential Platforms against which this statement has to be verified. are you saying that for a *UNIX* platform that correctly-rounded transcendentals are potentially undesirable?
> The sentence you quoted began with the adjective "ISA-level". We happily provide correctly rounded transcendental math on Linux as-is.
i am very confused. we seem to be talking at cross-purposes, and i
have no idea where the confusion lies.
it appears that you are rejecting the possibility of providing
ISA-level support for transcendental and trigonometric operations for
*four* possible platform scenarios just because "correctly rounded
transcendental math is provided on linux". this has me utterly
particularly when, even *on* one of those platforms - the standard
UNIX Platform - Jacob pointed out that there may exist
High-Performance Server scenarios that would want the increased
performance - *on linux* - that such ISA-level support would provide.
i apologise: i don't understand what is going on.
why would even *one* argument "we provide accurate SOFTWARE math
libraries on linux" be reasonable cause to reject HARDWARE support for
why would that argument be relevant for THREE OTHER completely
different Platform Profiles?
i don't understand.
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