(a) make a sufficiently complicated test, avoiding constants

Ok - I'll start with that, keeping the other options in mind.
I'll reply to this post, giving details of the solution I used when I find that solution.

Thanks for your input.

Cheers,
Rob

In reply to Re^6: [C Question] Determine if gcc provides erfl() function by syphilis
in thread [C Question] Determine if gcc provides erfl() function by syphilis

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