/* * Copyright (c) 2003, 2007-11 Matteo Frigo * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology * * The following statement of license applies *only* to this header file, * and *not* to the other files distributed with FFTW or derived therefrom: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /***************************** NOTE TO USERS ********************************* * * THIS IS A HEADER FILE, NOT A MANUAL * * If you want to know how to use FFTW, please read the manual, * online at http://www.fftw.org/doc/ and also included with FFTW. * For a quick start, see the manual's tutorial section. * * (Reading header files to learn how to use a library is a habit * stemming from code lacking a proper manual. Arguably, it's a * *bad* habit in most cases, because header files can contain * interfaces that are not part of the public, stable API.) * ****************************************************************************/ #ifndef FFTW3_H #define FFTW3_H #include #ifdef __cplusplus extern "C" { #endif /* __cplusplus */ /* If is included, use the C99 complex type. Otherwise define a type bit-compatible with C99 complex */ #if !defined(FFTW_NO_Complex) && defined(_Complex_I) && defined(complex) && defined(I) # define FFTW_DEFINE_COMPLEX(R, C) typedef R _Complex C #else # define FFTW_DEFINE_COMPLEX(R, C) typedef R C[2] #endif #define FFTW_CONCAT(prefix, name) prefix ## name #define FFTW_MANGLE_DOUBLE(name) FFTW_CONCAT(fftw_, name) #define FFTW_MANGLE_FLOAT(name) FFTW_CONCAT(fftwf_, name) #define FFTW_MANGLE_LONG_DOUBLE(name) FFTW_CONCAT(fftwl_, name) #define FFTW_MANGLE_QUAD(name) FFTW_CONCAT(fftwq_, name) /* IMPORTANT: for Windows compilers, you should add a line #define FFTW_DLL here and in kernel/ifftw.h if you are compiling/using FFTW as a DLL, in order to do the proper importing/exporting, or alternatively compile with -DFFTW_DLL or the equivalent command-line flag. This is not necessary under MinGW/Cygwin, where libtool does the imports/exports automatically. */ #if defined(FFTW_DLL) && (defined(_WIN32) || defined(__WIN32__)) /* annoying Windows syntax for shared-library declarations */ # if defined(COMPILING_FFTW) /* defined in api.h when compiling FFTW */ # define FFTW_EXTERN extern __declspec(dllexport) # else /* user is calling FFTW; import symbol */ # define FFTW_EXTERN extern __declspec(dllimport) # endif #else # define FFTW_EXTERN extern #endif enum fftw_r2r_kind_do_not_use_me { FFTW_R2HC=0, FFTW_HC2R=1, FFTW_DHT=2, FFTW_REDFT00=3, FFTW_REDFT01=4, FFTW_REDFT10=5, FFTW_REDFT11=6, FFTW_RODFT00=7, FFTW_RODFT01=8, FFTW_RODFT10=9, FFTW_RODFT11=10 }; struct fftw_iodim_do_not_use_me { int n; /* dimension size */ int is; /* input stride */ int os; /* output stride */ }; #include /* for ptrdiff_t */ struct fftw_iodim64_do_not_use_me { ptrdiff_t n; /* dimension size */ ptrdiff_t is; /* input stride */ ptrdiff_t os; /* output stride */ }; typedef void (*fftw_write_char_func_do_not_use_me)(char c, void *); typedef int (*fftw_read_char_func_do_not_use_me)(void *); /* huge second-order macro that defines prototypes for all API functions. We expand this macro for each supported precision X: name-mangling macro R: real data type C: complex data type */ #define FFTW_DEFINE_API(X, R, C) \ \ FFTW_DEFINE_COMPLEX(R, C); \ \ typedef struct X(plan_s) *X(plan); \ \ typedef struct fftw_iodim_do_not_use_me X(iodim); \ typedef struct fftw_iodim64_do_not_use_me X(iodim64); \ \ typedef enum fftw_r2r_kind_do_not_use_me X(r2r_kind); \ \ typedef fftw_write_char_func_do_not_use_me X(write_char_func); \ typedef fftw_read_char_func_do_not_use_me X(read_char_func); \ \ FFTW_EXTERN void X(execute)(const X(plan) p); \ \ FFTW_EXTERN X(plan) X(plan_dft)(int rank, const int *n, \ C *in, C *out, int sign, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_dft_1d)(int n, C *in, C *out, int sign, \ unsigned flags); \ FFTW_EXTERN X(plan) X(plan_dft_2d)(int n0, int n1, \ C *in, C *out, int sign, unsigned flags); \ FFTW_EXTERN X(plan) X(plan_dft_3d)(int n0, int n1, int n2, \ C *in, C *out, int sign, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_many_dft)(int rank, const int *n, \ int howmany, \ C *in, const int *inembed, \ int istride, int idist, \ C *out, const int *onembed, \ int ostride, int odist, \ int sign, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_guru_dft)(int rank, const X(iodim) *dims, \ int howmany_rank, \ const X(iodim) *howmany_dims, \ C *in, C *out, \ int sign, unsigned flags); \ FFTW_EXTERN X(plan) X(plan_guru_split_dft)(int rank, const X(iodim) *dims, \ int howmany_rank, \ const X(iodim) *howmany_dims, \ R *ri, R *ii, R *ro, R *io, \ unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_guru64_dft)(int rank, \ const X(iodim64) *dims, \ int howmany_rank, \ const X(iodim64) *howmany_dims, \ C *in, C *out, \ int sign, unsigned flags); \ FFTW_EXTERN X(plan) X(plan_guru64_split_dft)(int rank, \ const X(iodim64) *dims, \ int howmany_rank, \ const X(iodim64) *howmany_dims, \ R *ri, R *ii, R *ro, R *io, \ unsigned flags); \ \ FFTW_EXTERN void X(execute_dft)(const X(plan) p, C *in, C *out); \ FFTW_EXTERN void X(execute_split_dft)(const X(plan) p, R *ri, R *ii, \ R *ro, R *io); \ \ FFTW_EXTERN X(plan) X(plan_many_dft_r2c)(int rank, const int *n, \ int howmany, \ R *in, const int *inembed, \ int istride, int idist, \ C *out, const int *onembed, \ int ostride, int odist, \ unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_dft_r2c)(int rank, const int *n, \ R *in, C *out, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_dft_r2c_1d)(int n,R *in,C *out,unsigned flags); \ FFTW_EXTERN X(plan) X(plan_dft_r2c_2d)(int n0, int n1, \ R *in, C *out, unsigned flags); \ FFTW_EXTERN X(plan) X(plan_dft_r2c_3d)(int n0, int n1, \ int n2, \ R *in, C *out, unsigned flags); \ \ \ FFTW_EXTERN X(plan) X(plan_many_dft_c2r)(int rank, const int *n, \ int howmany, \ C *in, const int *inembed, \ int istride, int idist, \ R *out, const int *onembed, \ int ostride, int odist, \ unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_dft_c2r)(int rank, const int *n, \ C *in, R *out, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_dft_c2r_1d)(int n,C *in,R *out,unsigned flags); \ FFTW_EXTERN X(plan) X(plan_dft_c2r_2d)(int n0, int n1, \ C *in, R *out, unsigned flags); \ FFTW_EXTERN X(plan) X(plan_dft_c2r_3d)(int n0, int n1, \ int n2, \ C *in, R *out, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_guru_dft_r2c)(int rank, const X(iodim) *dims, \ int howmany_rank, \ const X(iodim) *howmany_dims, \ R *in, C *out, \ unsigned flags); \ FFTW_EXTERN X(plan) X(plan_guru_dft_c2r)(int rank, const X(iodim) *dims, \ int howmany_rank, \ const X(iodim) *howmany_dims, \ C *in, R *out, \ unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_guru_split_dft_r2c)( \ int rank, const X(iodim) *dims, \ int howmany_rank, \ const X(iodim) *howmany_dims, \ R *in, R *ro, R *io, \ unsigned flags); \ FFTW_EXTERN X(plan) X(plan_guru_split_dft_c2r)( \ int rank, const X(iodim) *dims, \ int howmany_rank, \ const X(iodim) *howmany_dims, \ R *ri, R *ii, R *out, \ unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_guru64_dft_r2c)(int rank, \ const X(iodim64) *dims, \ int howmany_rank, \ const X(iodim64) *howmany_dims, \ R *in, C *out, \ unsigned flags); \ FFTW_EXTERN X(plan) X(plan_guru64_dft_c2r)(int rank, \ const X(iodim64) *dims, \ int howmany_rank, \ const X(iodim64) *howmany_dims, \ C *in, R *out, \ unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_guru64_split_dft_r2c)( \ int rank, const X(iodim64) *dims, \ int howmany_rank, \ const X(iodim64) *howmany_dims, \ R *in, R *ro, R *io, \ unsigned flags); \ FFTW_EXTERN X(plan) X(plan_guru64_split_dft_c2r)( \ int rank, const X(iodim64) *dims, \ int howmany_rank, \ const X(iodim64) *howmany_dims, \ R *ri, R *ii, R *out, \ unsigned flags); \ \ FFTW_EXTERN void X(execute_dft_r2c)(const X(plan) p, R *in, C *out); \ FFTW_EXTERN void X(execute_dft_c2r)(const X(plan) p, C *in, R *out); \ \ FFTW_EXTERN void X(execute_split_dft_r2c)(const X(plan) p, \ R *in, R *ro, R *io); \ FFTW_EXTERN void X(execute_split_dft_c2r)(const X(plan) p, \ R *ri, R *ii, R *out); \ \ FFTW_EXTERN X(plan) X(plan_many_r2r)(int rank, const int *n, \ int howmany, \ R *in, const int *inembed, \ int istride, int idist, \ R *out, const int *onembed, \ int ostride, int odist, \ const X(r2r_kind) *kind, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_r2r)(int rank, const int *n, R *in, R *out, \ const X(r2r_kind) *kind, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_r2r_1d)(int n, R *in, R *out, \ X(r2r_kind) kind, unsigned flags); \ FFTW_EXTERN X(plan) X(plan_r2r_2d)(int n0, int n1, R *in, R *out, \ X(r2r_kind) kind0, X(r2r_kind) kind1, \ unsigned flags); \ FFTW_EXTERN X(plan) X(plan_r2r_3d)(int n0, int n1, int n2, \ R *in, R *out, X(r2r_kind) kind0, \ X(r2r_kind) kind1, X(r2r_kind) kind2, \ unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_guru_r2r)(int rank, const X(iodim) *dims, \ int howmany_rank, \ const X(iodim) *howmany_dims, \ R *in, R *out, \ const X(r2r_kind) *kind, unsigned flags); \ \ FFTW_EXTERN X(plan) X(plan_guru64_r2r)(int rank, const X(iodim64) *dims, \ int howmany_rank, \ const X(iodim64) *howmany_dims, \ R *in, R *out, \ const X(r2r_kind) *kind, unsigned flags); \ \ FFTW_EXTERN void X(execute_r2r)(const X(plan) p, R *in, R *out); \ \ FFTW_EXTERN void X(destroy_plan)(X(plan) p); \ FFTW_EXTERN void X(forget_wisdom)(void); \ FFTW_EXTERN void X(cleanup)(void); \ \ FFTW_EXTERN void X(set_timelimit)(double t); \ \ FFTW_EXTERN void X(plan_with_nthreads)(int nthreads); \ FFTW_EXTERN int X(init_threads)(void); \ FFTW_EXTERN void X(cleanup_threads)(void); \ \ FFTW_EXTERN int X(export_wisdom_to_filename)(const char *filename); \ FFTW_EXTERN void X(export_wisdom_to_file)(FILE *output_file); \ FFTW_EXTERN char *X(export_wisdom_to_string)(void); \ FFTW_EXTERN void X(export_wisdom)(X(write_char_func) write_char, \ void *data); \ FFTW_EXTERN int X(import_system_wisdom)(void); \ FFTW_EXTERN int X(import_wisdom_from_filename)(const char *filename); \ FFTW_EXTERN int X(import_wisdom_from_file)(FILE *input_file); \ FFTW_EXTERN int X(import_wisdom_from_string)(const char *input_string); \ FFTW_EXTERN int X(import_wisdom)(X(read_char_func) read_char, void *data); \ \ FFTW_EXTERN void X(fprint_plan)(const X(plan) p, FILE *output_file); \ FFTW_EXTERN void X(print_plan)(const X(plan) p); \ \ FFTW_EXTERN void *X(malloc)(size_t n); \ FFTW_EXTERN R *X(alloc_real)(size_t n); \ FFTW_EXTERN C *X(alloc_complex)(size_t n); \ FFTW_EXTERN void X(free)(void *p); \ \ FFTW_EXTERN void X(flops)(const X(plan) p, \ double *add, double *mul, double *fmas); \ FFTW_EXTERN double X(estimate_cost)(const X(plan) p); \ FFTW_EXTERN double X(cost)(const X(plan) p); \ \ FFTW_EXTERN const char X(version)[]; \ FFTW_EXTERN const char X(cc)[]; \ FFTW_EXTERN const char X(codelet_optim)[]; /* end of FFTW_DEFINE_API macro */ FFTW_DEFINE_API(FFTW_MANGLE_DOUBLE, double, fftw_complex) FFTW_DEFINE_API(FFTW_MANGLE_FLOAT, float, fftwf_complex) FFTW_DEFINE_API(FFTW_MANGLE_LONG_DOUBLE, long double, fftwl_complex) /* __float128 (quad precision) is a gcc extension on i386, x86_64, and ia64 for gcc >= 4.6 (compiled in FFTW with --enable-quad-precision) */ #if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) \ && !(defined(__ICC) || defined(__INTEL_COMPILER)) \ && (defined(__i386__) || defined(__x86_64__) || defined(__ia64__)) # if !defined(FFTW_NO_Complex) && defined(_Complex_I) && defined(complex) && defined(I) /* note: __float128 is a typedef, which is not supported with the _Complex keyword in gcc, so instead we use this ugly __attribute__ version. However, we can't simply pass the __attribute__ version to FFTW_DEFINE_API because the __attribute__ confuses gcc in pointer types. Hence redefining FFTW_DEFINE_COMPLEX. Ugh. */ # undef FFTW_DEFINE_COMPLEX # define FFTW_DEFINE_COMPLEX(R, C) typedef _Complex float __attribute__((mode(TC))) C # endif FFTW_DEFINE_API(FFTW_MANGLE_QUAD, __float128, fftwq_complex) #endif #define FFTW_FORWARD (-1) #define FFTW_BACKWARD (+1) #define FFTW_NO_TIMELIMIT (-1.0) /* documented flags */ #define FFTW_MEASURE (0U) #define FFTW_DESTROY_INPUT (1U << 0) #define FFTW_UNALIGNED (1U << 1) #define FFTW_CONSERVE_MEMORY (1U << 2) #define FFTW_EXHAUSTIVE (1U << 3) /* NO_EXHAUSTIVE is default */ #define FFTW_PRESERVE_INPUT (1U << 4) /* cancels FFTW_DESTROY_INPUT */ #define FFTW_PATIENT (1U << 5) /* IMPATIENT is default */ #define FFTW_ESTIMATE (1U << 6) /* undocumented beyond-guru flags */ #define FFTW_ESTIMATE_PATIENT (1U << 7) #define FFTW_BELIEVE_PCOST (1U << 8) #define FFTW_NO_DFT_R2HC (1U << 9) #define FFTW_NO_NONTHREADED (1U << 10) #define FFTW_NO_BUFFERING (1U << 11) #define FFTW_NO_INDIRECT_OP (1U << 12) #define FFTW_ALLOW_LARGE_GENERIC (1U << 13) /* NO_LARGE_GENERIC is default */ #define FFTW_NO_RANK_SPLITS (1U << 14) #define FFTW_NO_VRANK_SPLITS (1U << 15) #define FFTW_NO_VRECURSE (1U << 16) #define FFTW_NO_SIMD (1U << 17) #define FFTW_NO_SLOW (1U << 18) #define FFTW_NO_FIXED_RADIX_LARGE_N (1U << 19) #define FFTW_ALLOW_PRUNING (1U << 20) #define FFTW_WISDOM_ONLY (1U << 21) #ifdef __cplusplus } /* extern "C" */ #endif /* __cplusplus */ #endif /* FFTW3_H */