summaryrefslogtreecommitdiff
path: root/sysdeps/m68k/m680x0/bits/huge_vall.h
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/m68k/m680x0/bits/huge_vall.h')
-rw-r--r--sysdeps/m68k/m680x0/bits/huge_vall.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/sysdeps/m68k/m680x0/bits/huge_vall.h b/sysdeps/m68k/m680x0/bits/huge_vall.h
new file mode 100644
index 0000000000..f1a1614c35
--- /dev/null
+++ b/sysdeps/m68k/m680x0/bits/huge_vall.h
@@ -0,0 +1,41 @@
+/* `HUGE_VALL' constant for m68k (where it is infinity).
+ Used by <stdlib.h> and <math.h> functions for overflow.
+ Copyright (C) 1992-2014 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 _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. */