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

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

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

proc fftw_export_wisdom_to_string(): cstring {.cdecl,
    importc: "fftw_export_wisdom_to_string", dynlib: Fftw3Lib, ...raises: [],
    tags: [].}

proc fftw_forget_wisdom() {.cdecl, importc: "fftw_forget_wisdom",
                            dynlib: Fftw3Lib, ...raises: [], tags: [].}

proc fftw_import_system_wisdom(): cint {.cdecl,
    importc: "fftw_import_system_wisdom", dynlib: Fftw3Lib, ...raises: [], tags: [].}

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

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

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

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