Major Section: ACL2-BUILT-INS
(Minusp x) is true if and only if x < 0.
The guard of minusp requires its argument to be a rational (real, in
ACL2(r)) number.
Minusp is a Common Lisp function. See any Common Lisp
documentation for more information.
To see the ACL2 definition of this function, see pf.
