It looks as though the C functions floor and ceil have been around longer than trunc and round (can't find floor and ceil in math.h when -ansi is used). Therefore, we'll make floor the built-in, and have trunc, round and ceil implemented in terms of those.
It looks as though the C functions floor and ceil have been around longer than trunc and round (can't find floor and ceil in math.h when -ansi is used). Therefore, we'll make floor the built-in, and have trunc, round and ceil implemented in terms of those.