isinf

[Andreas Schwab]

Michael Veksler <VEKSLER@il.ibm.com> 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.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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