[rust-dev] Fast inverse square root in Rust
thadguidry at gmail.com
Sun Jan 12 10:19:11 PST 2014
Is that implemented through LLVM at
00265 /// haveFastSqrt -- Return true if the hardware has a fast
square-root00266 /// instruction.00267 virtual bool haveFastSqrt
<http://llvm.org/docs/doxygen/html/classllvm_1_1Type.html> *Ty) const;
How does that pass from Rust ???
On Sun, Jan 12, 2014 at 11:51 AM, Owen Shepherd <owen.shepherd at e43.eu>wrote:
> The "Fast inverse square root" is no longer fast. SSE implements accurate
> square root which is faster.
> Owen Shepherd
> http://owenshepherd.net | owen.shepherd at e43.eu
> On 12 January 2014 17:31, Carter Schonwald <carter.schonwald at gmail.com>wrote:
>> On Sunday, January 12, 2014, Thad Guidry wrote:
>>> Where is the fast inverse square root function in Rust ?
>>> Anyone know if this semi-accurate function is at a hardware level and
>>> built in to Intel chipsets since MMX ?
>>> How does this affect LLVM and Rust compilation on 64 bit ?
>>> Thanks in advance,
>>> +ThadGuidry <https://www.google.com/+ThadGuidry>
>>> Thad on LinkedIn <http://www.linkedin.com/in/thadguidry/>
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Thad on LinkedIn <http://www.linkedin.com/in/thadguidry/>
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