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-rw-r--r--sysdeps/alpha/fpu/s_nearbyintf.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/sysdeps/alpha/fpu/s_nearbyintf.c b/sysdeps/alpha/fpu/s_nearbyintf.c
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+++ b/sysdeps/alpha/fpu/s_nearbyintf.c
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+/* Copyright (C) 2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <math.h>
+
+#ifdef _IEEE_FP_INEXACT
+#error "Don't compile with -mieee-with-inexact"
+#endif
+
+float
+__nearbyintf (float x)
+{
+  float two23 = copysignf (0x1.0p23, x);
+  float r;
+
+  r = x + two23;
+  r = r - two23;
+
+  /* nearbyint(-0.1) == -0, and in general we'll always have the same sign
+     as our input.  */
+  return copysign (r, x);
+}
+
+weak_alias (__nearbyintf, nearbyintf)