[llvm-commits] [llvm] r49458 - /llvm/trunk/lib/Transforms/IPO/SimplifyLibCalls.cpp

[Duncan Sands]

On Thursday 10 April 2008 18:21:24 Chris Lattner wrote:
> On Apr 10, 2008, at 4:25 AM, Duncan Sands wrote:
> >>>> +      // x    pow(x, 0.5)  sqrt(x)
> >>>> +      // ---------------------------------------------
> >>>> +      // -0.0    +0.0       -0.0
> >>>> +      // -inf    +inf       NaN
> >>>
> >>> looks like pow is broken.  Is pow's behaviour documented
> >>> anywhere?  On my machine the man page says:
> >>>
> >>>       The pow() function can return the following error:
> >>>
> >>>       EDOM   The  argument x is negative and y is not an integral
> >>> value.  This would result in a complex num‐
> >>>              ber.
> >>>
> 
> -0.0 is negative, but it *is* an integral value, so EDOM doesn't apply.

You are confusing x and y.

D.