Function: conj
Section: conversions
C-Name: gconj
Prototype: G
Help: conj(x): the algebraic conjugate of x.
Doc:
 conjugate of $x$. The meaning of this
 is clear, except that for real quadratic numbers, it means conjugation in the
 real quadratic field. This function has no effect on integers, reals,
 intmods, fractions or $p$-adics. The only forbidden type is polmod
 (see \kbd{conjvec} for this).
