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Merge the int bit with the high fraction bit. Add constants/macros

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needed by gdtoa.
This commit is contained in:
christos 2007-02-02 23:07:44 +00:00
parent 113cee3dbe
commit b5b1a9d57c
1 changed files with 14 additions and 5 deletions
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19
sys/arch/x86/include/ieee.h
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@ -1,4 +1,4 @@
/* $NetBSD: ieee.h,v 1.9 2005/04/15 22:39:12 kleink Exp $ */ /* $NetBSD: ieee.h,v 1.10 2007/02/02 23:07:44 christos Exp $ */
/* /*
* Copyright (c) 1992, 1993 * Copyright (c) 1992, 1993
@ -49,7 +49,14 @@
#include <sys/ieee754.h> #include <sys/ieee754.h>
#define EXT_EXPBITS 15 #define EXT_EXPBITS 15
#define EXT_FRACBITS 64 #define EXT_FRACHBITS 32
#define EXT_FRACLBITS 32
#define EXT_FRACBITS (EXT_FRACLBITS + EXT_FRACHBITS)
#define EXT_TO_ARRAY32(u, a) do { \
(a)[0] = (uint32_t)(u).extu_ext.ext_fracl; \
(a)[1] = (uint32_t)(u).extu_ext.ext_frach; \
} while(/*CONSTCOND*/0)
/* /*
* struct ieee_ext is the raw storage layout of the 80-bit * struct ieee_ext is the raw storage layout of the 80-bit
@ -60,10 +67,12 @@
* i386: 16 bits. * i386: 16 bits.
*/ */
struct ieee_ext { struct ieee_ext {
u_int ext_fracl; u_int ext_fracl:EXT_FRACLBITS;
u_int ext_frach:31; u_int ext_frach:EXT_FRACHBITS;
#if 0
u_int ext_int:1; u_int ext_int:1;
u_int ext_exp:15; #endif
u_int ext_exp:EXT_EXPBITS;
u_int ext_sign:1; u_int ext_sign:1;
}; };