From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <4cdfdc69c18eaaf525552885049926cf@proxima.alt.za>
To: 9fans@9fans.net
From: Lucio De Re <lucio@proxima.alt.za>
Date: Sat, 29 Oct 2011 17:29:40 +0200
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Subject: [9fans] ARM compiler shortcoming?
Topicbox-Message-UUID: 3bdbdaba-ead7-11e9-9d60-3106f5b1d025

My guess is that the ARM compiler does not like 64-bit values in
conditional expressions.  The following C snippet:

	typedef unsigned long long	uvlong;

	uvlong uvinf    = ((uvlong)0x7FF00000<<32)|0x00000000;
	uvlong uvneginf = ((uvlong)0xFFF00000<<32)|0x00000000;

	double u2d(uvlong v);

	double
	__Inf(int sign)
	{
		return u2d(sign < 0 ? uvneginf : uvinf);
	}

compiled with 8c seems OK, but with 5c causes an error:

	% 5c -FTVw /tmp/nan64.c
	/tmp/nan64.c:11 unknown vlong LIST

Using an if statement seems to get rid of the problem.

++L