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authorUlrich Drepper <drepper@redhat.com>2000-06-12 23:54:16 +0000
committerUlrich Drepper <drepper@redhat.com>2000-06-12 23:54:16 +0000
commit65074d231159847217af88e47c2b71df50aead21 (patch)
treefa1071fb63d1310117d0999fb2f5db2a5ab4f973 /sysdeps/sh/bits/huge_val.h
parent37fb8add3054abd484455aeedee487622c6f170e (diff)
Update.
* sysdeps/sh/Dist: Removed. There is no ieee754.h file. * sysdeps/sh/sh3/dl-machine.h: Moved to... * sysdeps/sh/dl-machine.h: ...here. New file. * sysdeps/sh/sh4/dl-machine.h: Simply define KERNEL_MATH_EMULATION and include generic SH version. * sysdeps/sh/sh3/bits/endian.h: Move to... * sysdeps/sh/bits/endian.h: ...here. New file. * sysdeps/sh/sh4/bits/endian.h: Removed. * sysdeps/sh/sh3/bits/huge_val.h: Move to... * sysdeps/sh/bits/huge_val.h: ...here. New file. * sysdeps/sh/sh4/bits/huge_val.h: Removed. GAS which warns about changing section attributes. Proposed by Nick Clifton <nickc@redhat.com>. * sysdeps/sh/elf/initfini.c: New file. * sysdeps/sh/elf/start.S: New file. * sysdeps/sh/sys/ucontext.h: New file.
Diffstat (limited to 'sysdeps/sh/bits/huge_val.h')
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diff --git a/sysdeps/sh/bits/huge_val.h b/sysdeps/sh/bits/huge_val.h
new file mode 100644
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+++ b/sysdeps/sh/bits/huge_val.h
@@ -0,0 +1,104 @@
+/* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity).
+ Used by <stdlib.h> and <math.h> functions for overflow.
+ SH version.
+ Copyright (C) 1992, 95, 96, 97, 98, 99, 2000 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 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. */
+
+#ifndef _MATH_H
+# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
+#endif
+
+#include <features.h>
+
+/* IEEE positive infinity (-HUGE_VAL is negative infinity). */
+
+#ifdef __GNUC__
+
+# if __GNUC_PREREQ(2,96)
+
+# define HUGE_VAL (__extension__ 0x1.0p2047)
+
+# else
+
+# define HUGE_VAL \
+ (__extension__ \
+ ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \
+ { __l: 0x000000007ff00000ULL }).__d)
+
+# endif
+
+#else /* not GCC */
+
+# include <endian.h>
+
+typedef union { unsigned char __c[8]; double __d; } __huge_val_t;
+
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define __HUGE_VAL_bytes { 0, 0, 0, 0, 0x7f, 0xf0, 0, 0 }
+# endif
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+# define __HUGE_VAL_bytes { 0, 0, 0xf0, 0x7f, 0, 0, 0, 0 }
+# endif
+
+static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
+# define HUGE_VAL (__huge_val.__d)
+
+#endif /* GCC. */
+
+
+/* ISO C99 extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */
+
+#ifdef __USE_ISOC99
+
+# ifdef __GNUC__
+
+# if __GNUC_PREREQ(2,96)
+
+# define HUGE_VALF (__extension__ 0x1.0p255f)
+
+# else
+
+# define HUGE_VALF \
+ (__extension__ \
+ ((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; }) \
+ { __l: 0x7f800000UL }).__d)
+
+# endif
+
+# else /* not GCC */
+
+typedef union { unsigned char __c[4]; float __f; } __huge_valf_t;
+
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 }
+# endif
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+# define __HUGE_VALF_bytes { 0, 0, 0x80, 0x7f }
+# endif
+
+static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
+# define HUGE_VALF (__huge_valf.__f)
+
+# endif /* GCC. */
+
+
+/* Generally there is no separate `long double' format and it is the
+ same as `double'. */
+# define HUGE_VALL HUGE_VAL
+
+#endif /* __USE_ISOC99. */