[Python-ideas] Fused multiply-add (FMA)

[Xavier Combelle]

> Generally speaking, there are two reasons why people may *not* want an
> FMA operation.
> 1. They need their results to be reproducible across
> compilers/platforms. (the most common reason)
>
The reproducibility of floating point calculation is very hard to reach 
a good survey of the problem is
https://randomascii.wordpress.com/2013/07/16/floating-point-determinism/
it mention the fma problem but it only a part of a biggest picture
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