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authorEric Andersen <andersen@codepoet.org>2003-10-11 18:14:32 +0000
committerEric Andersen <andersen@codepoet.org>2003-10-11 18:14:32 +0000
commit6c9412876d741ae74d0d4fd775757a1a6cda52e1 (patch)
treed2ccd9edb29995297a188b729c6ebdc4a63275e0 /include/fpu_control.h
parentd6a6267fab07e0e873b27923d07f111cc40f9fba (diff)
I forgot to remove this
Diffstat (limited to 'include/fpu_control.h')
-rw-r--r--include/fpu_control.h98
1 files changed, 0 insertions, 98 deletions
diff --git a/include/fpu_control.h b/include/fpu_control.h
deleted file mode 100644
index ed9bf388a..000000000
--- a/include/fpu_control.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/* FPU control word bits. i387 version.
- Copyright (C) 1993,1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Olaf Flebbe.
-
- 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 _FPU_CONTROL_H
-#define _FPU_CONTROL_H 1
-
-/* Here is the dirty part. Set up your 387 through the control word
- * (cw) register.
- *
- * 15-13 12 11-10 9-8 7-6 5 4 3 2 1 0
- * | reserved | IC | RC | PC | reserved | PM | UM | OM | ZM | DM | IM
- *
- * IM: Invalid operation mask
- * DM: Denormalized operand mask
- * ZM: Zero-divide mask
- * OM: Overflow mask
- * UM: Underflow mask
- * PM: Precision (inexact result) mask
- *
- * Mask bit is 1 means no interrupt.
- *
- * PC: Precision control
- * 11 - round to extended precision
- * 10 - round to double precision
- * 00 - round to single precision
- *
- * RC: Rounding control
- * 00 - rounding to nearest
- * 01 - rounding down (toward - infinity)
- * 10 - rounding up (toward + infinity)
- * 11 - rounding toward zero
- *
- * IC: Infinity control
- * That is for 8087 and 80287 only.
- *
- * The hardware default is 0x037f which we use.
- */
-
-#include <features.h>
-
-/* masking of interrupts */
-#define _FPU_MASK_IM 0x01
-#define _FPU_MASK_DM 0x02
-#define _FPU_MASK_ZM 0x04
-#define _FPU_MASK_OM 0x08
-#define _FPU_MASK_UM 0x10
-#define _FPU_MASK_PM 0x20
-
-/* precision control */
-#define _FPU_EXTENDED 0x300 /* libm requires double extended precision. */
-#define _FPU_DOUBLE 0x200
-#define _FPU_SINGLE 0x0
-
-/* rounding control */
-#define _FPU_RC_NEAREST 0x0 /* RECOMMENDED */
-#define _FPU_RC_DOWN 0x400
-#define _FPU_RC_UP 0x800
-#define _FPU_RC_ZERO 0xC00
-
-#define _FPU_RESERVED 0xF0C0 /* Reserved bits in cw */
-
-
-/* The fdlibm code requires strict IEEE double precision arithmetic,
- and no interrupts for exceptions, rounding to nearest. */
-
-#define _FPU_DEFAULT 0x037f
-
-/* IEEE: same as above. */
-#define _FPU_IEEE 0x037f
-
-/* Type of the control word. */
-typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__)));
-
-/* Macros for accessing the hardware control word. */
-#define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw))
-#define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw))
-
-/* Default control word set at startup. */
-extern fpu_control_t __fpu_control;
-
-#endif /* fpu_control.h */