Michael Veksler <[EMAIL PROTECTED]> writes: > Maybe there is a simpler way? For example: > > volatile int a; > volatile double b; > int main () > { > a = isinf (b); > return 0; > } > > This way the compiler must not assume anything about 'b', > making it impossible to optimizes the call to isinf.
Why not just use AC_HAVE_FUNCS(isinf)? IIUC this is part of a configure script, although whether it is autoconf generated is not clear so far. Andreas. -- Andreas Schwab, SuSE Labs, [EMAIL PROTECTED] SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."