
[;1m  load_nif(Path, LoadInfo)[0m

  Loads and links a dynamic library containing native implemented
  functions (NIFs) for a module.

  [;;4mPath[0m is a file path to the shareable object/dynamic library file
  minus the OS-dependent file extension ([;;4m.so[0m for Unix and [;;4m.dll[0m
  for Windows). Notice that on most OSs the library has to have a
  different name on disc when an upgrade of the nif is done. If the
  name is the same, but the contents differ, the old library may be
  loaded instead. For information on how to implement a NIF library,
  see [;;4merl_nif(3)[0m.

  [;;4mLoadInfo[0m can be any term. It is passed on to the library as part
  of the initialization. A good practice is to include a module
  version number to support future code upgrade scenarios.

  The call to [;;4mload_nif/2[0m must be made directly from the Erlang
  code of the module that the NIF library belongs to. It returns
  either [;;4mok[0m, or [;;4m{error,{Reason,Text}}[0m if loading fails. [;;4mReason[0m
  is one of the following atoms while [;;4mText[0m is a human readable
  string that can give more information about the failure:

   • [;;4mload_failed[0m - The OS failed to load the NIF library.

   • [;;4mbad_lib[0m - The library did not fulfill the requirements as a
     NIF library of the calling module.

   • [;;4mload | upgrade[0m - The corresponding library callback was
     unsuccessful.

   • [;;4mreload[0m - A NIF library is already loaded for this module
     instance. The previously deprecated [;;4mreload[0m feature was
     removed in OTP 20.

   • [;;4mold_code[0m - The call to [;;4mload_nif/2[0m was made from the old
     code of a module that has been upgraded; this is not
     allowed.

  If the [;;4m-nifs()[0m attribute is used (which is recommended), all
  NIFs in the dynamic library must be declared as such for [;;4m[0m
  [;;4mload_nif/2[0m to succeed. On the other hand, all functions declared
  with the [;;4m-nifs()[0m attribute do not have to be implemented by the
  dynamic library. This allows a target independent Erlang file to
  contain fallback implementations for functions that may lack NIF
  support depending on target OS/hardware platform.
