[libre-riscv-dev] [isa-dev] Re: FP transcendentals (trigonometry, root/exp/log) proposal

lkcl luke.leighton at gmail.com
Thu Aug 8 10:41:13 BST 2019

On Thursday, August 8, 2019 at 7:30:38 AM UTC+1, waterman wrote:
> ISA-level support for correctly rounded transcendentals is speciously 
> attractive, but its utility is not clearly evident and is possibly 
> negative. 

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?

> It does not make sense to allocate opcode space under these circumstances.

[reminder and emphasis: there are potentially *four* completely separate 
and distinct Platforms, all of which share / need these exact same opcodes]


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