Field G. Van Zee 89cd650e7b Use void_fp for function pointers instead of void*. ...

Change void*-typed function pointers to void_fp.
- Updated all instances of void* variables that store function pointers
  to variables of a new type, void_fp. Originally, I wanted to define
  the type of void_fp as "void (*void_fp)( void )"--that is, a pointer
  to a function with no return value and no arguments. However, once
  I did this, I realized that gcc complains with incompatible pointer
  type (-Wincompatible-pointer-types) warnings every time any such a
  pointer is being assigned to its final, type-accurate function
  pointer type. That is, gcc will silently typecast a void* to
  another defined function pointer type (e.g. dscalv_ker_ft) during
  an assignment from the former to the latter, but the same statement
  will trigger a warning when typecasting from a void_fp type. I suspect
  an explicit typecast is needed in order to avoid the warning, which
  I'm not willing to insert at this time.
- Added a typedef to bli_type_defs.h defining void_fp as void*, along
  with a commented-out version of the aborted definition described
  above. (Note that POSIX requires that void* and function pointers
  be interchangeable; it is the C standard that does not provide this
  guarantee.)
- Comment updates to various _oapi.c files.

2019-04-02 17:23:55 -05:00

..

ref99

Use void_fp for function pointers instead of void*.

2019-04-02 17:23:55 -05:00