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a8014572
2013 Apr 24
1
[LLVMdev] Optimize away sqrt in simple cases?
On 04/23/2013 10:50 PM, Owen Anderson wrote:
>
> On Apr 23, 2013, at 7:15 PM, Stephen Lin <swlin at post.harvard.edu> wrote:
>
>>> This is not true. The mathematically correct result for sqrt might not be a representable value in floating point, so rounding may occur between the two steps. In that case, pow2(sqrt(x)) != x.
>>
>> I think what Christoph is