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authorEric Andersen <andersen@codepoet.org>2003-10-08 18:15:50 +0000
committerEric Andersen <andersen@codepoet.org>2003-10-08 18:15:50 +0000
commitc7757f181f0bd52206059f2685a5197113aca76f (patch)
treedcf97b5cda180791099fb63e028eccddf1f6c31b /libc/sysdeps/linux/e1/bits/fenv.h
parent9456866061819ea226ebe2b39ef20622fd36c2f1 (diff)
Patch from George Thanos adding support for the "e1" architecture.
Diffstat (limited to 'libc/sysdeps/linux/e1/bits/fenv.h')
-rw-r--r--libc/sysdeps/linux/e1/bits/fenv.h88
1 files changed, 88 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/e1/bits/fenv.h b/libc/sysdeps/linux/e1/bits/fenv.h
new file mode 100644
index 000000000..dde6aceaa
--- /dev/null
+++ b/libc/sysdeps/linux/e1/bits/fenv.h
@@ -0,0 +1,88 @@
+
+/* Copyright (C) 2002-2003, George Thanos <george.thanos@gdt.gr>
+ Yannis Mitsos <yannis.mitsos@gdt.gr>
+
+ Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+
+ 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 _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+
+/* Define bits representing the exception. We use the bit positions of
+ the appropriate bits in the SR. */
+enum
+ {
+ FE_INEXACT = (1 << 8),
+#define FE_INEXACT FE_INEXACT
+ FE_UNDERFLOW = (1 << 9),
+#define FE_UNDERFLOW FE_UNDERFLOW
+ FE_OVERFLOW = (1 << 10),
+#define FE_OVERFLOW FE_OVERFLOW
+ FE_DIVBYZERO = (1 << 11),
+#define FE_DIVBYZERO FE_DIVBYZERO
+ FE_INVALID = (1 << 12)
+#define FE_INVALID FE_INVALID
+ };
+
+#define FE_ALL_EXCEPT \
+ (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+/* We support all of the four defined rounding modes. We use
+ the bit positions in the FPCR Mode Control Byte as the values for the
+ appropriate macros. */
+enum
+ {
+ FE_TONEAREST = 0,
+#define FE_TONEAREST FE_TONEAREST
+ FE_TOWARDZERO = 1 << 13 ,
+#define FE_TOWARDZERO FE_TOWARDZERO
+ FE_DOWNWARD = 2 << 13,
+#define FE_DOWNWARD FE_DOWNWARD
+ FE_UPWARD = 3 << 13
+#define FE_UPWARD FE_UPWARD
+ };
+
+
+/* Type representing exception flags. */
+typedef unsigned int fexcept_t;
+
+
+/* Type representing floating-point environment.*/
+typedef struct
+{
+ unsigned int round_mode;
+ unsigned int trap_enabled;
+ unsigned int accrued_except;
+ unsigned int actual_except;
+} fenv_t;
+
+#if 0
+/* If the default argument is used we use this value. */
+const fenv FE_DFL_ENV_OBJ = {0, 0x1C00, 0}
+#define FE_DFL_ENV (&FE_DFL_ENV_OBJ)
+
+#ifdef __USE_GNU
+/* Floating-point environment where none of the exceptions are masked. */
+const fenv_t FE_NOMASK_ENV_OBJ = { 0, 0x1F00, 0 };
+# define FE_NOMASK_ENV (&FE_NOMASK_ENV_OBJ)
+#endif
+
+#endif
+
+#include <bits/fenvinline.h>