On Thu, Feb 24, 2011 at 12:10 PM, Paolo Bonzini email@example.com wrote:
On 02/23/2011 08:04 PM, Aurelien Jarno wrote:
Actually that's the reason why i386 doesn't use softfloat, as all the trigonometric use libm, and the bridge between softfloat and libm is not working correctly (plenty of type abuse).
Besides, I doubt softfloat would want bug-compatible trig function implementations. fsincos for example is a far cry from the precision of the libm function.
I agree, these functions certainly don't belong to SoftFloat. They should be implemented in target-i386/op_helper.c. But bit accuracy might be difficult to achieve, unless Intel/AMD properly documented how they compute all these functions.