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Subject: Re: [PATCH 4/4] Use copysign instead of ternary for some sin/cos
 input ranges
To: libc-alpha@sourceware.org
References: <1474998553-2366-1-git-send-email-siddhesh@sourceware.org>
 <1474998553-2366-5-git-send-email-siddhesh@sourceware.org>
From: Manfred <mx2927@gmail.com>
Message-ID: <343e148d-c0ce-c506-a040-a80301856af4@gmail.com>
Date: Wed, 28 Sep 2016 12:59:00 -0000
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On 9/27/2016 7:49 PM, Siddhesh Poyarekar wrote:
> @@ -479,7 +479,7 @@ __sin (double x)
>      {
>        res = do_sin (x, 0, &cor);
>        retval = (res == res + 1.096 * cor) ? res : slow1 (x);
> -      retval = m > 0 ? retval : -retval;
> +      retval = __copysign (retval, x);
>      }				/*   else  if (k < 0x3feb6000)    */
>
The ternary uses m, __copysign uses x. It could be correct (I didn't 
check the full context), but just in case...