proc fftw_forget_wisdom() {...}{.cdecl, importc: "fftw_forget_wisdom",
                            dynlib: Fftw3Lib.}

proc fftw_export_wisdom_to_filename(filename: cstring): cint {...}{.cdecl,
    importc: "fftw_export_wisdom_to_filename", dynlib: Fftw3Lib.}

proc fftw_export_wisdom_to_file(output_file: ptr File) {...}{.cdecl,
    importc: "fftw_export_wisdom_to_file", dynlib: Fftw3Lib.}

proc fftw_export_wisdom_to_string(): cstring {...}{.cdecl,
    importc: "fftw_export_wisdom_to_string", dynlib: Fftw3Lib.}

proc fftw_export_wisdom(write_char: fftw_write_char_func; data: pointer) {...}{.
    cdecl, importc: "fftw_export_wisdom", dynlib: Fftw3Lib.}

proc fftw_import_system_wisdom(): cint {...}{.cdecl,
    importc: "fftw_import_system_wisdom", dynlib: Fftw3Lib.}

proc fftw_import_wisdom_from_filename(filename: cstring): cint {...}{.cdecl,
    importc: "fftw_import_wisdom_from_filename", dynlib: Fftw3Lib.}

proc fftw_import_wisdom_from_file(input_file: ptr File): cint {...}{.cdecl,
    importc: "fftw_import_wisdom_from_file", dynlib: Fftw3Lib.}

proc fftw_import_wisdom_from_string(input_string: cstring): cint {...}{.cdecl,
    importc: "fftw_import_wisdom_from_string", dynlib: Fftw3Lib.}

proc fftw_import_wisdom(read_char: fftw_read_char_func; data: pointer): cint {...}{.
    cdecl, importc: "fftw_import_wisdom", dynlib: Fftw3Lib.}