Re: [cxx-abi-dev] IEEE 754r half-precision fp mangling?
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [cxx-abi-dev] IEEE 754r half-precision fp mangling?
- To: cxx-abi-dev@xxxxxxxxxxxxxxxx, scott.douglass@xxxxxxx
- Subject: Re: [cxx-abi-dev] IEEE 754r half-precision fp mangling?
- From: Dennis Handly <dhandly@xxxxxxxxxx>
- Date: Fri, 6 Jun 2008 13:35:47 -0700 (PDT)
>From: scott douglass <scott.douglass@xxxxxxx>
>I'm not sure what the DFP mangling proposal is and it would be best if
>half-precision floating point was consistent with DFP ... but here goes
>anyway:
>We seem to be running out of single lower case letter for types. I
>propose adding this to section 5.1.5
><type> ::= Eh # half-precision floating point (16bit)
>My intention is that 'E' means extension or escape and allows a raft of
>new encoding letters.
I would suggest you just use "D". I.e. save "E" for End as in most
other parts of the BNF.
Also, what good is "D", if there are only 3 Dec fp types. :-)
Might as well use all 26*2 combinations. And the possible 10 numeric
ones (dtors).