Re: [fpu] conversion

[Jamil Khatib <jamilkhatib75@yahoo.com>]

--- Damjan Lampret <damjanlampret@yahoo.com> wrote:
> Hi,
> 
> I have two questions:
> 
> - how hard is to add conversion from singleword
> (32bit) 2's complement
> integer to IEEE754 FP?

I do not think this will be problematic, but you are
going to loose some digits if integer uses the 32-bit
(32-bit int to 23 bit FP fraction)
 it  will be as a normalization procedure.

> - how hard is to add conversion from FP to integer
> (opposite direction
> than above)?
> 

I am not sure about this but may be we can use the
same rounding core

> In case it is too hard this can also be generated by
> GCC (I really
> wonder what is conversion insns vs FPcalc insns
> ratio (of course
> depends upon application but still...).
> 
> regards,
> Damjan
> 
> 
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