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@Nexuapex Nexuapex/kahan3.c
Created Aug 23, 2012

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Kahan summation (3-way)
float sum(float x0, float x1, float x2)
float accum = x0 + x1;
float excess = (accum - x0) - x1;
float addend = x2 - excess;
return accum + addend;
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