[Cfp-interest 1893] Re: fabs and copysign cleanup

[Mike Cowlishaw]

This looks good .. one minor suggestion; in:

  The fabs functions compute the absolute value of [a floating-point number]
x. 

instead of deleting all of 'a floating-point number', perhaps just change
'number' to 'value'?  It's worth emphasising that these should/must be used
if the argument is double, etc.

[side comment .. I have, over the years, been surprised several times when I
forgot to use fabs() and used abs() -- as in other languages -- instead and
got apparently weird results ... :-)]

Mike




> -----Original Message-----
> From: Cfp-interest [mailto:cfp-interest-bounces at oakapple.net] 
> On Behalf Of Jim Thomas
> Sent: 09 January 2021 18:12
> To: CFP
> Subject: [Cfp-interest 1883] fabs and copysign cleanup
> 
> In addressing an action item to reword the signbit 
> specification to account for it's being a bit-level 
> operation, I also looked at fabs and copysign which are also 
> bit-level operations, at least for IEC 60559 implementations. 
> Here are some suggestions for these specification:
> 
> https://wiki.edg.com/pub/CFP/WebHome/C23_proposal_-_fabs_and_c
opysign_cleanup.pdf
> 
> - Jim Thomas
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