diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2006-05-04 19:28:44 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2006-05-04 19:28:44 +0000 |
| commit | 85cdf88b54e6fd3d08d45d6a2afa96851149b72f (patch) | |
| tree | 13f84590c26d4c77aa1555aa76fcbfebbeed6c8a /sys/arch/m88k/include/ieee.h | |
| parent | 3c2215d461a3d1171bb65f36c103ed0bf9f895a3 (diff) | |
Document the 88110 extended (80-bit) floating point format.
Diffstat (limited to 'sys/arch/m88k/include/ieee.h')
| -rw-r--r-- | sys/arch/m88k/include/ieee.h | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/sys/arch/m88k/include/ieee.h b/sys/arch/m88k/include/ieee.h index 975e8b13f4f..a849c33906e 100644 --- a/sys/arch/m88k/include/ieee.h +++ b/sys/arch/m88k/include/ieee.h @@ -1,4 +1,4 @@ -/* $OpenBSD: ieee.h,v 1.1 2004/04/26 12:34:05 miod Exp $ */ +/* $OpenBSD: ieee.h,v 1.2 2006/05/04 19:28:43 miod Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. @@ -38,9 +38,6 @@ * * @(#)ieee.h 8.1 (Berkeley) 6/11/93 */ -/* - * Stolen from sparc port - */ /* * ieee.h defines the machine-dependent layout of the machine's IEEE @@ -76,21 +73,14 @@ * * -149 == -127 - 23 + 1. */ -#ifndef __MACHINE_IEEE_H__ -#define __MACHINE_IEEE_H__ #define SNG_EXPBITS 8 #define SNG_FRACBITS 23 #define DBL_EXPBITS 11 #define DBL_FRACBITS 52 -#ifdef notyet -#define E80_EXPBITS 15 -#define E80_FRACBITS 64 -#endif - #define EXT_EXPBITS 15 -#define EXT_FRACBITS 112 +#define EXT_FRACBITS 64 struct ieee_single { u_int sng_sign:1; @@ -108,9 +98,8 @@ struct ieee_double { struct ieee_ext { u_int ext_sign:1; u_int ext_exp:15; - u_int ext_frach:16; - u_int ext_frachm; - u_int ext_fraclm; + u_int ext_lead:1; + u_int ext_frach:31; u_int ext_fracl; }; @@ -130,7 +119,7 @@ struct ieee_ext { #if 0 #define SNG_QUIETNAN (1 << 22) #define DBL_QUIETNAN (1 << 19) -#define EXT_QUIETNAN (1 << 15) +#define EXT_QUIETNAN (1 << 30) #endif /* @@ -139,4 +128,3 @@ struct ieee_ext { #define SNG_EXP_BIAS 127 #define DBL_EXP_BIAS 1023 #define EXT_EXP_BIAS 16383 -#endif /* __MACHINE_IEEE_H__ */ |