#### 6.56.20 TI C6X Built-in Functions

GCC provides intrinsics to access certain instructions of the TI C6X processors. These intrinsics, listed below, are available after inclusion of the `c6x_intrinsics.h` header file. They map directly to C6X instructions.

         int _sadd (int, int)
         int _ssub (int, int)
         int _sadd2 (int, int)
         int _ssub2 (int, int)
         long long _mpy2 (int, int)
         long long _smpy2 (int, int)
         int _add4 (int, int)
         int _sub4 (int, int)
         int _saddu4 (int, int)

         int _smpy (int, int)
         int _smpyh (int, int)
         int _smpyhl (int, int)
         int _smpylh (int, int)

         int _sshl (int, int)
         int _subc (int, int)

         int _avg2 (int, int)
         int _avgu4 (int, int)

         int _clrr (int, int)
         int _extr (int, int)
         int _extru (int, int)
         int _abs (int)
         int _abs2 (int)