proc av_double2int(f: cdouble): uint64 {.cdecl, inline, importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_float2int(f: cfloat): uint32 {.cdecl, inline, importc, cdecl,
                                       ...raises: [], tags: [], forbids: [].}

proc av_int2double(i: uint64): cdouble {.cdecl, inline, importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_int2float(i: uint32): cfloat {.cdecl, inline, importc, cdecl,
                                       ...raises: [], tags: [], forbids: [].}