c/10025: gcc 3.2.2 recognizes complex functions even without complex.h

[bangerth@dealii.org]

Synopsis: gcc 3.2.2 recognizes complex functions even without complex.h

State-Changed-From-To: open->closed
State-Changed-By: bangerth
State-Changed-When: Tue Mar 11 15:07:12 2003
State-Changed-Why:
    This is a gnu extension. The builtin conj function is switched
    off if you use -ansi or -std=c89.
    
    W.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10025