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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/m68k/bits/huge_vall.h
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/m68k/bits/huge_vall.h')
-rw-r--r--sysdeps/m68k/bits/huge_vall.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/sysdeps/m68k/bits/huge_vall.h b/sysdeps/m68k/bits/huge_vall.h
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+++ b/sysdeps/m68k/bits/huge_vall.h
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+/* `HUGE_VALL' constant for m68k (where it is infinity).
+   Used by <stdlib.h> and <math.h> functions for overflow.
+   Copyright (C) 1992, 1995, 1996, 1997, 1999, 2000, 2004
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _MATH_H
+# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
+#endif
+
+#if __GNUC_PREREQ(3,3)
+# define HUGE_VALL	(__builtin_huge_vall ())
+#elif __GNUC_PREREQ(2,96)
+# define HUGE_VALL	(__extension__ 0x1.0p32767L)
+#elif defined__GNUC__
+
+# define HUGE_VALL					\
+  (__extension__					\
+   ((union { unsigned long __l[3]; long double __ld; })	\
+    { __l: { 0x7fff0000UL, 0x80000000UL, 0UL } }).__ld)
+
+#else /* not GCC */
+
+static union { unsigned char __c[12]; long double __ld; } __huge_vall =
+  { { 0x7f, 0xff, 0, 0, 0x80, 0, 0, 0, 0, 0, 0, 0 } };
+# define HUGE_VALL	(__huge_vall.__ld)
+
+#endif /* GCC 2.95.  */