* build static & shared lib
* fixed bug when Nth>Ntop
* fortran drivers use dynamic malloc to prevent stack segfaults that CMCL had
* bugs found in fortran drivers, removed
* split out devel text files (TODO, etc)
* made pass-fail test script counting crashes and numdiff fails.
* finufft?d_test have a no-timings option, and exit with ier.
* global error codes
* made finufft routines & testers return error codes rather than exit().
* dumbinput test executable
* found nan returned error for nj=0 in type-1, fixed so returns the zero array.
* fixed type 2 to not segfault when ms,mt, or mu=0, doing dir=2 0-padding right
* array utils use pointers to make which vars they write to explicit.
* don't do final type-3 rephase if C1 nan or 0.
* finished all dumbinputs, all dims
* fortran compilation fixed
* makefile self-documents
* nf1 (etc) size check before alloc, exit gracefully if exceeds RAM
* integrate into nufft_comparison, esp vs NFFT - jfm did
* simple examples, simpler than the test drivers
* fortran link via gfortran, better fortran docs
* boilerplate stuff as in CMCL page
pre-V. 0.7: (Jan-Feb 2017)
* efficient modulo in spreader, done by conditionals
* removed data-zeroing bug in t-II spreader, slowness of large arrays in t-I.
* clean dir tree
* spreader dir=1,2 math tests in 3d, then nd.
* Jeremy's request re only computing kernel vals needed (actually
was vital for efficiency in dir=1 openmp version), Ie fix KB kereval in
spreader so doesn't wdo 3d fill when 1 or 2 will do.
* spreader removed modulo altogether in favor of ifs
* OpenMP spreader, all dims
* multidim spreader test, command line args and bash driver
* cnufft->finufft names, except spreader still called cnufft
* make ier report accuracy out of range, malloc size errors, etc
* moved wrappers to own directories so the basic lib is clean
* fortran wrapper added ier argument
* types 1,2 in all dims, using 1d kernel for all dims.
* fix twopispread so doesn't create dummy ky,kz, and fix sort so doesn't ever
access unused ky,kz dims.
* cleaner spread and nufft test scripts
* build universal ndim Fourier coeff copiers in C and use for finufft
* makefile opts and compiler directives to link against FFTW.
* t-I, t-II convergence params test: R=M/N and KB params
* overall scale factor understand in KB
* check J's bessel10 approx is ok. - became irrelevant
* meas speed of I_0 for KB kernel eval - became irrelevant
* understand origin of dfftpack (netlib fftpack is real*4) - not needed
* [spreader: make compute_sort_indices sensible for 1d and 2d. not needed]
* next235even for nf's
* switched pre/post-amp correction from DFT of kernel to F series (FT) of
kernel, more accurate
* Gauss-Legendre quadrature for direct eval of kernel FT, openmp since cexp slow
* optimize q ( G-L nodes) for kernel FT eval on reg and irreg grids
(common.cpp). Needs q a bit bigger than like (2-3x the PTR, when 1.57x is
expected). Why?
* type 3 segfault in dumb case of nj=1 (SX product = 0). By keeping gam>1/S
* optimize that phi(z) kernel support is only +-(nspread-1)/2, so w/ prob 1 you
only use nspread-1 pts in the support. Could gain several % speed for same acc
* new simpler kernel entirely
* cleaned up set_nf calls and removed params from within core libs
* test isign=-1 works
* type 3 in 2d, 3d
* style: headers should only include other headers needed to compile the .h;
all other headers go in .cpp, even if that involves repetition I guess.
* changed library interface and twopispread to dcomplex
* fortran wrappers (rmdir greengard_work, merge needed into fortran)
FINUFFT Started: mid-January 2017.