From: Richard Henderson <rth@twiddle.net>
To: libc-ports@sourceware.org
Subject: Re: alpha, ia64, hppa ports need get-rounding-mode.h
Date: Thu, 13 Sep 2012 14:37:00 -0000 [thread overview]
Message-ID: <5051EF9D.7090204@twiddle.net> (raw)
In-Reply-To: <Pine.LNX.4.64.1209122336470.15730@digraph.polyomino.org.uk>
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On 09/12/2012 04:39 PM, Joseph S. Myers wrote:
> the alpha, ia64 and hppa ports need a get-rounding-mode.h header ...
Done.
r~
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* sysdeps/alpha/fpu/get-rounding-mode.h: New file.
diff --git a/ports/sysdeps/alpha/fpu/get-rounding-mode.h b/ports/sysdeps/alpha/fpu/get-rounding-mode.h
new file mode 100644
index 0000000..9d5b724
--- /dev/null
+++ b/ports/sysdeps/alpha/fpu/get-rounding-mode.h
@@ -0,0 +1,35 @@
+/* Determine floating-point rounding mode within libc. Alpha version.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef ALPHA_GET_ROUNDING_MODE_H
+#define ALPHA_GET_ROUNDING_MODE_H 1
+
+#include <fenv.h>
+#include <fenv_libc.h>
+
+/* Return the floating-point rounding mode. */
+
+static inline int
+get_rounding_mode (void)
+{
+ unsigned long fpcr;
+ __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));
+ return (fpcr >> FPCR_ROUND_SHIFT) & 3;
+}
+
+#endif /* get-rounding-mode.h */
next prev parent reply other threads:[~2012-09-13 14:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-12 23:39 Joseph S. Myers
2012-09-13 2:51 ` Carlos O'Donell
2012-09-13 14:37 ` Richard Henderson [this message]
2012-09-24 23:23 ` [PATCH] ia64: define new get-rounding-mode.h header Mike Frysinger
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