On Sat, 10 Feb 2018, Wilco Dijkstra wrote:

> For floats exp2f is ~10% faster than expf, powf is 2.2 times slower, and 
> exp10f is 3.2 times slower (slower than powf due to using double pow).

I expect it would be reasonably straightforward to adapt Szabolcs's 
optimized expf to produce an optimized exp10f (and likewise for log10f).

Joseph S. Myers

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