47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*---------------------------------------------------------------------------+
|
||
|
|
| control_w.h |
|
||
|
|
| |
|
||
|
|
| Copyright (C) 1992,1993 |
|
||
|
|
| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, |
|
||
|
|
| Australia. E-mail billm@vaxc.cc.monash.edu.au |
|
||
|
|
| |
|
||
|
|
+---------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
#ifndef _CONTROLW_H_
|
||
|
|
#define _CONTROLW_H_
|
||
|
|
|
||
|
|
#ifdef __ASSEMBLY__
|
||
|
|
#define _Const_(x) $##x
|
||
|
|
#else
|
||
|
|
#define _Const_(x) x
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define CW_RC _Const_(0x0C00) /* rounding control */
|
||
|
|
#define CW_PC _Const_(0x0300) /* precision control */
|
||
|
|
|
||
|
|
#define CW_Precision Const_(0x0020) /* loss of precision mask */
|
||
|
|
#define CW_Underflow Const_(0x0010) /* underflow mask */
|
||
|
|
#define CW_Overflow Const_(0x0008) /* overflow mask */
|
||
|
|
#define CW_ZeroDiv Const_(0x0004) /* divide by zero mask */
|
||
|
|
#define CW_Denormal Const_(0x0002) /* denormalized operand mask */
|
||
|
|
#define CW_Invalid Const_(0x0001) /* invalid operation mask */
|
||
|
|
|
||
|
|
#define CW_Exceptions _Const_(0x003f) /* all masks */
|
||
|
|
|
||
|
|
#define RC_RND _Const_(0x0000)
|
||
|
|
#define RC_DOWN _Const_(0x0400)
|
||
|
|
#define RC_UP _Const_(0x0800)
|
||
|
|
#define RC_CHOP _Const_(0x0C00)
|
||
|
|
|
||
|
|
/* p 15-5: Precision control bits affect only the following:
|
||
|
|
ADD, SUB(R), MUL, DIV(R), and SQRT */
|
||
|
|
#define PR_24_BITS _Const_(0x000)
|
||
|
|
#define PR_53_BITS _Const_(0x200)
|
||
|
|
#define PR_64_BITS _Const_(0x300)
|
||
|
|
#define PR_RESERVED_BITS _Const_(0x100)
|
||
|
|
/* FULL_PRECISION simulates all exceptions masked */
|
||
|
|
#define FULL_PRECISION (PR_64_BITS | RC_RND | 0x3f)
|
||
|
|
|
||
|
|
#endif /* _CONTROLW_H_ */
|