### REALFIX

coerce to a real number
Major Section: ACL2-BUILT-INS

`Realfix`

simply returns any real number argument unchanged,
returning `0`

on a non-real argument. Also see nfix,
see ifix, see rfix, and see fix for analogous functions
that coerce to a natural number, an integer, a rational, and a
number, respectively.

`Realfix`

has a guard of `t`

.

To see the ACL2 definition of this function, see pf.