## Fast fixed point pow, log, exp and sqrt

I’ve got a fixed point class (10.22) and I have a need of a pow, a sqrt, an exp and a log function.

Alas I have no idea where to even start on this. Can anyone provide me with some links to useful …

Technical knowledge for tech readers and developers

exp

I’ve got a fixed point class (10.22) and I have a need of a pow, a sqrt, an exp and a log function.

Alas I have no idea where to even start on this. Can anyone provide me with some links to useful …

The GCC implementation of the C mathematical library on Debian systems has apparently an (IEEE 754-2008)-compliant implementation of the function exp, implying that rounding shall always be correct:

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