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Date: Mon, 25 Feb 2019 00:28:20 +1100 (AEDT)
From: Damian McGuckin <>
Subject: FE Exception triggered by comparison

What comparison of FP numbers trigger invalid operation exceptions?

Does a comparison like

 	if (x != x)
 		/* get to here if x == NaN *

which tests for a NaN cause an invalid operation if given an sNaN?

Even reading the standard numerous times and I am not any wiser.

Thanks - Damian

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