[U-Boot-Users] PPC440 Floating point?
Hello,
It's maybe a bit off-topic, but if you can direct me to a right newsgroup I would be pleased.
We are planning to use the PPC440 but, I wan't to use floating point calculations on a PPC440, since this processor has no FPU, it not as easy I guess?
- What do I need to do floating point calculations? - Does the GNU compiler support this feature? - Can I find documentation upon the power (CPU Cycles) needed to do a single 'add' or 'multiply'?
Thx Roel
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In message NCBBIIOPCEBAMFLLKKBKCEDNCGAA.RL@prodrive.nl you wrote:
We are planning to use the PPC440 but, I wan't to use floating point calculations on a PPC440, since this processor has no FPU, it not as easy I guess?
It's easy if you can live with the poor performance youwill get with software floating point.
- What do I need to do floating point calculations?
Nothing special.
- Does the GNU compiler support this feature?
If it is configured, correctly, yes. You can use our ELDK, which supports this.
- Can I find documentation upon the power (CPU Cycles) needed to do a single
'add' or 'multiply'?
You do not really want to know this. It is a very frustrating experience.
Best regards,
Wolfgang Denk
participants (2)
-
Roel Loeffen -
Wolfgang Denk