I made a quick wrapper of pffft!
pffft is a small, liberally licensed C library that seems to be the fastest and most-used of the many 'tiny and almost as good as FFTW3' libraries.
It's a C style thin wrapper but it's usable without casting. Since the original source is rather small it's included so there are no external dependencies. All original tests pass with the wrapper. Seems to work fine in practice.
Just translate it to Nim completely and save us from C's eternal points-to-one vs poinst-to-many confusions:
integer *nac, integer ido, integer ip, integer l1, integer idl1,
real *cc, real *c1, real *c2, real *ch, real *ch2, const real *wa, real fsign)Fixed in 0.1.1, please upgrade- 0.1.0 was missing a commit. Sorry!
I tried porting it to Nim first, but I had trouble getting the port right so I wrapped it.