/
FINUFFT.jl
808 lines (732 loc) · 25.4 KB
/
FINUFFT.jl
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__precompile__()
module FINUFFT
## Export
export nufft1d1, nufft1d2, nufft1d3
export nufft2d1, nufft2d2, nufft2d3
export nufft3d1, nufft3d2, nufft3d3
export nufft1d1!, nufft1d2!, nufft1d3!
export nufft2d1!, nufft2d2!, nufft2d3!
export nufft3d1!, nufft3d2!, nufft3d3!
export finufft_default_opts
export nufft_opts
export nufft_c_opts # backward-compability
## External dependencies
using finufft_jll
const BIGINT = Int64 # defined in src/finufft.h
## FINUFFT opts struct from src/finufft.h
"""
mutable struct nufft_opts
debug :: Cint
spread_debug :: Cint
spread_sort :: Cint
spread_kerevalmeth :: Cint
spread_kerpad :: Cint
chkbnds :: Cint
fftw :: Cint
modeord :: Cint
upsampfac :: Cdouble
end
Options struct passed to the FINUFFT library.
# Fields
debug :: Cint
0: silent, 1: text basic timing output
spread_debug :: Cint
passed to spread_opts, 0 (no text) 1 (some) or 2 (lots)
spread_sort :: Cint
passed to spread_opts, 0 (don't sort) 1 (do) or 2 (heuristic)
spread_kerevalmeth :: Cint
passed to spread_opts, 0: exp(sqrt()), 1: Horner ppval (faster)
spread_kerpad :: Cint
passed to spread_opts, 0: don't pad to mult of 4, 1: do
chkbnds :: Cint
0: don't check if input NU pts in [-3pi,3pi], 1: do
fftw :: Cint
0:`FFTW_ESTIMATE`, or 1:`FFTW_MEASURE` (slow plan but faster)
modeord :: Cint
0: CMCL-style increasing mode ordering (neg to pos), or\\
1: FFT-style mode ordering (affects type-1,2 only)
upsampfac::Cdouble
upsampling ratio sigma, either 2.0 (standard) or 1.25 (small FFT)
"""
mutable struct nufft_opts
debug :: Cint
spread_debug :: Cint
spread_sort :: Cint
spread_kerevalmeth :: Cint
spread_kerpad :: Cint
chkbnds :: Cint
fftw :: Cint
modeord :: Cint
upsampfac :: Cdouble
end
const nufft_c_opts = nufft_opts # backward compability
"""
finufft_default_opts()
Return a [`nufft_opts`](@ref) struct with the default FINUFFT settings.\\
See: <https://finufft.readthedocs.io/en/latest/usage.html#options>
"""
function finufft_default_opts()
opts = nufft_opts(0,0,0,0,0,0,0,0,0)
ccall( (:finufft_default_opts, libfinufft),
Nothing,
(Ref{nufft_opts},),
opts
)
return opts
end
### Error handling
const ERR_EPS_TOO_SMALL = 1
const ERR_MAXNALLOC = 2
const ERR_SPREAD_BOX_SMALL = 3
const ERR_SPREAD_PTS_OUT_RANGE = 4
const ERR_SPREAD_ALLOC = 5
const ERR_SPREAD_DIR = 6
const ERR_UPSAMPFAC_TOO_SMALL = 7
const HORNER_WRONG_BETA = 8
const ERR_NDATA_NOTVALID = 9
struct FINUFFTError <: Exception
errno::Cint
msg::String
end
Base.showerror(io::IO, e::FINUFFTError) = print(io, "FINUFFT Error ($(e.errno)): ", e.msg)
function check_ret(ret)
# Check return value and output error messages
if ret==0
return
elseif ret==ERR_EPS_TOO_SMALL
msg = "requested tolerance epsilon too small"
elseif ret==ERR_MAXNALLOC
msg = "attemped to allocate internal arrays larger than MAX_NF (defined in common.h)"
elseif ret==ERR_SPREAD_BOX_SMALL
msg = "spreader: fine grid too small"
elseif ret==ERR_SPREAD_PTS_OUT_RANGE
msg = "spreader: if chkbnds=1, a nonuniform point out of input range [-3pi,3pi]^d"
elseif ret==ERR_SPREAD_ALLOC
msg = "spreader: array allocation error"
elseif ret==ERR_SPREAD_DIR
msg = "spreader: illegal direction (should be 1 or 2)"
elseif ret==ERR_UPSAMPFAC_TOO_SMALL
msg = "upsampfac too small (should be >1)"
elseif ret==HORNER_WRONG_BETA
msg = "upsampfac not a value with known Horner eval: currently 2.0 or 1.25 only"
elseif ret==ERR_NDATA_NOTVALID
msg = "ndata not valid (should be >= 1)"
else
msg = "unknown error"
end
throw(FINUFFTError(ret, msg))
end
### Simple Interfaces (allocate output)
## Type-1
"""
nufft1d1(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
ms :: Integer
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-1 1D complex nonuniform FFT.
"""
function nufft1d1(xj::Array{Float64},
cj::Array{ComplexF64},
iflag::Integer,
eps::Float64,
ms::Integer,
opts::nufft_opts=finufft_default_opts())
fk = Array{ComplexF64}(undef, ms)
nufft1d1!(xj, cj, iflag, eps, fk, opts)
return fk
end
"""
nufft2d1(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
ms :: Integer,
mt :: Integer,
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-1 2D complex nonuniform FFT.
"""
function nufft2d1(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
ms :: Integer,
mt :: Integer,
opts :: nufft_opts = finufft_default_opts())
fk = Array{ComplexF64}(undef, ms, mt)
nufft2d1!(xj, yj, cj, iflag, eps, fk, opts)
return fk
end
"""
nufft3d1(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
ms :: Integer,
mt :: Integer,
mu :: Integer,
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-1 3D complex nonuniform FFT.
"""
function nufft3d1(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
ms :: Integer,
mt :: Integer,
mu :: Integer,
opts :: nufft_opts = finufft_default_opts())
fk = Array{ComplexF64}(undef, ms, mt, mu)
nufft3d1!(xj, yj, zj, cj, iflag, eps, fk, opts)
return fk
end
## Type-2
"""
nufft1d2(xj :: Array{Float64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-2 1D complex nonuniform FFT.
"""
function nufft1d2(xj :: Array{Float64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
cj = Array{ComplexF64}(undef, nj)
nufft1d2!(xj, cj, iflag, eps, fk, opts)
return cj
end
"""
nufft2d2(xj :: Array{Float64},
yj :: Array{Float64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-2 2D complex nonuniform FFT.
"""
function nufft2d2(xj :: Array{Float64},
yj :: Array{Float64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
cj = Array{ComplexF64}(undef, nj)
nufft2d2!(xj, yj, cj, iflag, eps, fk, opts)
return cj
end
"""
nufft3d2(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-2 3D complex nonuniform FFT.
"""
function nufft3d2(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
cj = Array{ComplexF64}(undef, nj)
nufft3d2!(xj, yj, zj, cj, iflag, eps, fk, opts)
return cj
end
## Type-3
"""
nufft1d3(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-3 1D complex nonuniform FFT.
"""
function nufft1d3(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(cj)==nj
nk = length(sk)
fk = Array{ComplexF64}(undef, nk)
nufft1d3!(xj, cj, iflag, eps, sk, fk, opts);
return fk
end
"""
nufft2d3(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
tk :: Array{Float64}
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-3 2D complex nonuniform FFT.
"""
function nufft2d3(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
tk :: Array{Float64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(cj)==nj
nk = length(sk)
fk = Array{ComplexF64}(undef, nk)
nufft2d3!(xj, yj, cj, iflag, eps, sk, tk, fk, opts);
return fk
end
"""
nufft3d3(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
tk :: Array{Float64}
uk :: Array{Float64}
[, opts :: nufft_opts]
) -> Array{ComplexF64}
Compute type-3 3D complex nonuniform FFT.
"""
function nufft3d3(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
tk :: Array{Float64},
uk :: Array{Float64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(cj)==nj
nk = length(sk)
fk = Array{ComplexF64}(undef, nk)
nufft3d3!(xj, yj, zj, cj, iflag, eps, sk, tk, uk, fk, opts);
return fk
end
### Direct interfaces (No allocation)
## 1D
"""
nufft1d1!(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
)
Compute type-1 1D complex nonuniform FFT. Output stored in fk.
"""
function nufft1d1!(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(cj)==nj
ms = length(fk)
# Calling interface
# int finufft1d1(BIGINT nj,FLT* xj,CPX* cj,int iflag,FLT eps,BIGINT ms,
# CPX* fk, nufft_opts opts);
ret = ccall( (:finufft1d1, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
Ref{ComplexF64},
nufft_opts),
nj, xj, cj, iflag, eps, ms, fk, opts
)
check_ret(ret)
end
"""
nufft1d2!(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
)
Compute type-2 1D complex nonuniform FFT. Output stored in cj.
"""
function nufft1d2!(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(cj)==nj
ms = length(fk)
# Calling interface
# int finufft1d2(BIGINT nj,FLT* xj,CPX* cj,int iflag,FLT eps,BIGINT ms,
# CPX* fk, nufft_opts opts);
ret = ccall( (:finufft1d2, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
Ref{ComplexF64},
nufft_opts),
nj, xj, cj, iflag, eps, ms, fk, opts
)
check_ret(ret)
end
"""
nufft1d3!(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
fk :: Array{ComplexF64},
[, opts :: nufft_opts]
)
Compute type-3 1D complex nonuniform FFT. Output stored in fk.
"""
function nufft1d3!(xj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(cj)==nj
nk = length(sk)
@assert length(fk)==nk
# Calling interface
# int finufft1d3(BIGINT nj,FLT* x,CPX* c,int iflag,FLT eps,BIGINT nk, FLT* s, CPX* f, nufft_opts opts);
ret = ccall( (:finufft1d3, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
Ref{Cdouble},
Ref{ComplexF64},
nufft_opts),
nj, xj, cj, iflag, eps, nk, sk, fk, opts
)
check_ret(ret)
end
## 2D
"""
nufft2d1!(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
)
Compute type-1 2D complex nonuniform FFT. Output stored in fk.
"""
function nufft2d1!(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(yj)==nj
@assert length(cj)==nj
ms, mt = size(fk)
# Calling interface
# int finufft2d1(BIGINT nj,FLT* xj,FLT *yj,CPX* cj,int iflag,FLT eps,
# BIGINT ms, BIGINT mt, CPX* fk, nufft_opts opts);
ret = ccall( (:finufft2d1, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
BIGINT,
Ref{ComplexF64},
nufft_opts),
nj, xj, yj, cj, iflag, eps, ms, mt, fk, opts
)
check_ret(ret)
end
"""
nufft2d2!(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
)
Compute type-2 2D complex nonuniform FFT. Output stored in cj.
"""
function nufft2d2!(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(yj)==nj
@assert length(cj)==nj
ms, mt = size(fk)
# Calling interface
# int finufft2d2(BIGINT nj,FLT* xj,FLT *yj,CPX* cj,int iflag,FLT eps,
# BIGINT ms, BIGINT mt, CPX* fk, nufft_opts opts);
ret = ccall( (:finufft2d2, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
BIGINT,
Ref{ComplexF64},
nufft_opts),
nj, xj, yj, cj, iflag, eps, ms, mt, fk, opts
)
check_ret(ret)
end
"""
nufft2d3!(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
tk :: Array{Float64},
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
)
Compute type-3 2D complex nonuniform FFT. Output stored in fk.
"""
function nufft2d3!(xj :: Array{Float64},
yj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
tk :: Array{Float64},
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(yj)==nj
@assert length(cj)==nj
nk = length(sk)
@assert length(tk)==nk
@assert length(fk)==nk
# Calling interface
# int finufft2d3(BIGINT nj,FLT* x,FLT *y,CPX* cj,int iflag,FLT eps,BIGINT nk, FLT* s, FLT* t, CPX* fk, nufft_opts opts);
ret = ccall( (:finufft2d3, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
Ref{Cdouble},
Ref{Cdouble},
Ref{ComplexF64},
nufft_opts),
nj, xj, yj, cj, iflag, eps, nk, sk, tk, fk, opts
)
check_ret(ret)
end
## 3D
"""
nufft3d1!(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
)
Compute type-1 3D complex nonuniform FFT. Output stored in fk.
"""
function nufft3d1!(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(yj)==nj
@assert length(zj)==nj
@assert length(cj)==nj
ms, mt, mu = size(fk)
# Calling interface
# int finufft3d1(BIGINT nj,FLT* xj,FLT *yj,FLT *zj,CPX* cj,int iflag,FLT eps,
# BIGINT ms, BIGINT mt, BIGINT mu, CPX* fk, nufft_opts opts);
ret = ccall( (:finufft3d1, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{Cdouble},
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
BIGINT,
BIGINT,
Ref{ComplexF64},
nufft_opts),
nj, xj, yj, zj, cj, iflag, eps, ms, mt, mu, fk, opts
)
check_ret(ret)
end
"""
nufft3d2!(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
)
Compute type-2 3D complex nonuniform FFT. Output stored in cj.
"""
function nufft3d2!(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(yj)==nj
@assert length(zj)==nj
@assert length(cj)==nj
ms, mt, mu = size(fk)
# Calling interface
# int finufft3d2(BIGINT nj,FLT* xj,FLT *yj,FLT *zj,CPX* cj,int iflag,FLT eps,
# BIGINT ms, BIGINT mt, BIGINT mu, CPX* fk, nufft_opts opts);
ret = ccall( (:finufft3d2, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{Cdouble},
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
BIGINT,
BIGINT,
Ref{ComplexF64},
nufft_opts),
nj, xj, yj, zj, cj, iflag, eps, ms, mt, mu, fk, opts
)
check_ret(ret)
end
"""
nufft3d3!(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
tk :: Array{Float64},
uk :: Array{Float64},
fk :: Array{ComplexF64}
[, opts :: nufft_opts]
)
Compute type-3 3D complex nonuniform FFT. Output stored in fk.
"""
function nufft3d3!(xj :: Array{Float64},
yj :: Array{Float64},
zj :: Array{Float64},
cj :: Array{ComplexF64},
iflag :: Integer,
eps :: Float64,
sk :: Array{Float64},
tk :: Array{Float64},
uk :: Array{Float64},
fk :: Array{ComplexF64},
opts :: nufft_opts = finufft_default_opts())
nj = length(xj)
@assert length(yj)==nj
@assert length(zj)==nj
@assert length(cj)==nj
nk = length(sk)
@assert length(tk)==nk
@assert length(uk)==nk
@assert length(fk)==nk
# Calling interface
# int finufft3d3(BIGINT nj,FLT* x,FLT *y,FLT *z, CPX* cj,int iflag,
# FLT eps,BIGINT nk,FLT* s, FLT* t, FLT *u,
# CPX* fk, nufft_opts opts);
ret = ccall( (:finufft3d3, libfinufft),
Cint,
(BIGINT,
Ref{Cdouble},
Ref{Cdouble},
Ref{Cdouble},
Ref{ComplexF64},
Cint,
Cdouble,
BIGINT,
Ref{Cdouble},
Ref{Cdouble},
Ref{Cdouble},
Ref{ComplexF64},
nufft_opts),
nj, xj, yj, zj, cj, iflag, eps, nk, sk, tk, uk, fk, opts
)
check_ret(ret)
end
end # module