ppci-cc: ++ and -- should work for floating point types

[tstreiff]

float f;
++f;
  ^ Expected integer or pointer

++ and -- should work on any expression for which exp += 1 is legal.
From the C standard: "The expression ++E is equivalent to (E+=1)."
And += supports either: pointer += integer or: arithmetic += arithmetic.

[windelbouwman]

I copied your change, and added some test cases.

[tstreiff]

I have just checked and it works! thanks!