* sysdeps/alpha/fpu/fraiseexcpt.c: Use get/set_fp_control instead of arithmetic instructions.

        * sysdeps/alpha/fpu/s_ceil.c: Use round to -inf instead of playing
        with the fpcr.  Protect from INV exception.
        * sysdeps/alpha/fpu/s_ceilf.c: Likewise.
        * sysdeps/alpha/fpu/s_floor.c: Protect from INV exception.
        * sysdeps/alpha/fpu/s_floorf.c: Likewise.

        * sysdeps/alpha/fpu/s_copysign.c: New.
        * sysdeps/alpha/fpu/s_copysignf.c: New.
        * sysdeps/alpha/fpu/s_fabs.c: New.
        * sysdeps/alpha/fpu/s_fabsf.c: New.
        * sysdeps/alpha/fpu/s_rint.c: New.
        * sysdeps/alpha/fpu/s_rintf.c: New.
	* sysdeps/alpha/fpu/fraiseexcpt.c: Use get/set_fp_control instead
	of arithmetic instructions.

	* sysdeps/alpha/fpu/s_ceil.c: Use round to -inf instead of playing
	with the fpcr.  Protect from INV exception.
	* sysdeps/alpha/fpu/s_ceilf.c: Likewise.
	* sysdeps/alpha/fpu/s_floor.c: Protect from INV exception.
	* sysdeps/alpha/fpu/s_floorf.c: Likewise.

	* sysdeps/alpha/fpu/s_copysign.c: New.
	* sysdeps/alpha/fpu/s_copysignf.c: New.
	* sysdeps/alpha/fpu/s_fabs.c: New.
	* sysdeps/alpha/fpu/s_fabsf.c: New.
	* sysdeps/alpha/fpu/s_rint.c: New.
	* sysdeps/alpha/fpu/s_rintf.c: New.

1 files changed, 50 insertions, 0 deletions

diff --git a/sysdeps/alpha/fpu/s_rint.c b/sysdeps/alpha/fpu/s_rint.c
new file mode 100644
index 0000000000..7309b4134e
--- /dev/null
+++ b/sysdeps/alpha/fpu/s_rint.c
@@ -0,0 +1,50 @@
+/* Copyright (C) 2000 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <math.h>
+
+
+double
+__rint (double x)
+{
+  if (isless (fabs (x), 9007199254740992.0))	/* 1 << DBL_MANT_DIG */
+    {
+      double tmp1, new_x;
+      __asm (
+#ifdef _IEEE_FP_INEXACT
+	     "cvttq/svid %2,%1\n\t"
+#else
+	     "cvttq/svd %2,%1\n\t"
+#endif
+	     "cvtqt/d %1,%0\n\t"
+	     : "=f"(new_x), "=&f"(tmp1)
+	     : "f"(x));
+
+      /* rint(-0.1) == -0, and in general we'll always have the same
+	 sign as our input.  */
+      x = copysign(new_x, x);
+    }
+  return x;
+}
+
+weak_alias (__rint, rint)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__rint, __rintl)
+weak_alias (__rint, rintl)
+#endif