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From: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: 'GNU C Library' <libc-alpha@sourceware.org>
Subject: [PATCH v2 8/9] i386: Move hypot implementation to C
Date: Thu, 28 Oct 2021 13:43:36 +0000	[thread overview]
Message-ID: <VE1PR08MB55995F3FEA12658DFBF2A11D83869@VE1PR08MB5599.eurprd08.prod.outlook.com> (raw)

Hi Adhemerval,

+double
+__ieee754_hypot (double x, double y)
+{
+  if ((isinf (x) || isinf (y))
+      && !issignaling (x) && !issignaling (y))
+    return INFINITY;
+  if (isnan (x) || isnan (y))
+    return x + y;
+
+  long double lx = x;
+  long double ly = y;
+  double r = math_narrow_eval (sqrtl (lx * lx + ly * ly));
+  math_check_force_underflow_nonneg (r);
+  return r;
+}

This looks very generic, so wouldn't it be possible to move to
sysdeps/ieee754/ldbl-96?

Wilco

             reply	other threads:[~2021-10-28 13:43 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-28 13:43 Wilco Dijkstra [this message]
2021-11-01 17:09 ` Adhemerval Zanella
  -- strict thread matches above, loose matches on Subject: below --
2021-10-25 11:57 [PATCH v2 0/9] Improve hypot() Adhemerval Zanella
2021-10-25 11:57 ` [PATCH v2 8/9] i386: Move hypot implementation to C Adhemerval Zanella
2021-10-25 17:10   ` Joseph Myers
2021-11-01 17:23     ` Adhemerval Zanella

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