git clone http://github.com/thismagpie/fftw
cd fftw
./installer
This installs to the home directory so root access is only needed to install system required libraries but not fftw3 or the fftw gem itself.
Follow the instructions on installing nmatrix
git clone http://github.com/thismagpie/fftw
cd fftw
./installer
- Do not repeat code.
R : real type, aka fftw_real
E : real type for local variables (possibly extra precision)
C : complex type
sz : size
vecsz : vector size
is, os : input/output stride
ri, ii : real/imag input (complex data)
ro, io : real/imag output (complex data)
I, O : real input/output (real data)
A : assert
CK : check
S : solver, defined internally to each solver file
P : plan, defined internally to each solver file
k : codelet
X(...) : used for mangling of external names (see below)
K(...) : floating-point constant, in E precision
If a name is used often and must have the form fftw_foo to avoid namespace pollution, #define FOO fftw_foo and use the short name: Use foo instead.
foo is lowercase so that it does not look like a DOS program.
Exception: typedef struct foo_s {...} foo; instead of:
typedef struct foo {...} foo;
for C++ compatibility.
