Sergey Sharybin a9bb8d8a73 Cycles: de-duplicate fast/approximate erf function calculation
Our own implementation is in fact the same performance as in fast_math from
OpenShadingLanguage, but implementation from fast_math is using explicit madd
function, which increases chance of compiler deciding to use intrinsics.
2015-04-06 12:49:44 +05:00
2015-03-19 19:50:51 +01:00
2013-12-24 22:57:27 +06:00
2014-08-08 06:00:49 +10:00
2010-10-13 14:44:22 +00:00
2015-03-24 07:49:17 +11:00
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