| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- /*---------------------------------------------------------------------------+
- | 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_ */
|
