[Cfp-interest 2318] Re: infinity and exceptions

[Damian McGuckin]

On Fri, 14 Jan 2022, Vincent Lefevre wrote:

>> I do not see any place in the C standard that the use of
>> INFINITY shall be quiet (in most cases).  One exception is
>> INFINITY / INFINITY (which raises invalid)..
>
> and 0 * INFINITY.

Yes. So do we also need to explicitly then also mention

 	fma(0, INFINITY, c)
and
 	fma(INFINITY, 0, c)

If we are using the symbolic constant INFINITY, rather than the concept of 
AN infinity, does it need to be written as

 	(+/-)INFINITY

or something similar?  Sorry, that is probably very esoteric or picky.

Do we need to list all the cases where you get an INVALID with an 
infinity?

Stay safe - Damian

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