Re: [cc65] floating point support redux

On Freitag 02 April 2010, you wrote:
> Not much has been said about floating point support for a while now.
> 
> Maybe it is time to revive the discussion?
> 
> Before even a decision is made on what formats to use for floating point
> support, there exists the problem of the compiler treating floating
> point expressions the same way that the target does.
> 
> What do you think of these two ideas?

imho those both sound like "too much" to me to be honest.

my proposal would be like this:

- the compiler uses ieee754 floats. same calling conventions as for 32bit 
longs can be used. (optionally, doubles can be made the same as floats)
- floating point library routines may come at two flavours: one generic fully 
iee compliant emulator (to be written), and target specific routines which may
work on a different floating point format *internally* (i have such routines 
for c64, similar ones can probably be written for most targets that have basic 
in rom or sth). there might be a linker switch to select which of the two gets 
linked.

-- 

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