Getting rid of warning message: Note: Nonstandard floating-point mode ...

Question

I'm using the current version of the FORTRAN compiler. When I run code compiled with
f77, I get this annoying message:
Note: Nonstandard floating-point mode enabled
See the Numerical Computation Guide, ieee_sun(3M)
How can I disable this message without modifying any FORTRAN code? I haven't yet found any environment variables that I can set to eliminate these messages.
BTW, this is the version I'm using:
NOTICE: Invoking /opt/bin/f90 -f77 -ftrap=%none -V
f90: Forte Developer 7 Fortran 95 7.0 2002/03/09

Answer 1

If you look at the man page for ieee_sun, what is
happening is that f77 programs call ieee_retrospective
when they exit.
All you have to do is link in your version of the
ieee_retrospective function, which you can define
to do nothing.
I made a program called flags.f as an example.
So normally you get :
% f77 -fast flags.f
% ./a.out
Note: Nonstandard floating-point mode enabled
See the Numerical Computation Guide, ieee_sun(3M)
Now link with the ieee_retrospective.c that I've
below.
#include <stdio.h>
void ieee_retrospective(FILE *f) {}
And you get :
% f77 -fast flags.f ieee_retrospective.o
% ./a.out
<No output>