Re: "FP precision conv" with no floats in sight

• Subject: Re: "FP precision conv" with no floats in sight
• From: Jonas Maebe <email@hidden>
• Date: Sat, 30 Oct 2004 12:16:18 +0200
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On 30 Oct 2004, at 12:06, Paul Sargent wrote:

frsp     f1,f2
stfs     f2,20(r28)

The reason is that some PPC's have a bug, whereby they throw an exception if you try to store an fpu value as a single without first explicitly rounding it to a single. I have to admit I'm not sure whether it can also pop up if the value in question has only been "touched" by single precision fpu ops though.

... but according to the instruction set reference in shark that's storing the pre-rounded value, not the post.

Oops, you're right!

Jonas

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