Consistency cleanup

Attempt to get consistent across the pseudocode.
Change the data types to all be intN_t instead of some cases of intN.
Use float_t as the general floating point data type.
Be consistent on use of the term "floating-point"
Move general pseudocode helpers to their own section.

Change-Id: Ie77666cd3ee438c71f39c62b9c424fe687b0bb51
Signed-off-by: Eric Kunze <eric.kunze@arm.com>