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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><!-- hennerik CVSweb $Revision: 1.93 $ --><TITLE>glibc.dead/soft-fp/single.h - view - 1.1.1.2</TITLE></HEAD><BODY BGCOLOR="#eeeeee"><table width="100%" border=0 cellspacing=0 cellpadding=1 bgcolor="#9999ee"><tr valign=bottom><td><a href="single.h#rev1.1.1.2"><IMG SRC="/icons/back.gif" ALT="[BACK]" BORDER="0" WIDTH="20" HEIGHT="22"></a> <b>Return to <A HREF="single.h#rev1.1.1.2">single.h</A> CVS log</b> <IMG SRC="/icons/text.gif" ALT="[TXT]" BORDER="0" WIDTH="20" HEIGHT="22"></td><td align=right><IMG SRC="/icons/dir.gif" ALT="[DIR]" BORDER="0" WIDTH="20" HEIGHT="22"> <b>Up to <a href="/cgi-bin/cvsweb.cgi/#dirlist">[Development]</a> / <a href="/cgi-bin/cvsweb.cgi/glibc.dead/#dirlist">glibc.dead</a> / <a href="/cgi-bin/cvsweb.cgi/glibc.dead/soft-fp/#dirlist">soft-fp</a></b></td></tr></table><HR noshade><table width="100%"><tr><td bgcolor="#ffffff">File: <a href="/cgi-bin/cvsweb.cgi/#dirlist">[Development]</a> / <a href="/cgi-bin/cvsweb.cgi/glibc.dead/#dirlist">glibc.dead</a> / <a href="/cgi-bin/cvsweb.cgi/glibc.dead/soft-fp/#dirlist">soft-fp</a> / <a href="/cgi-bin/cvsweb.cgi/glibc.dead/soft-fp/single.h">single.h</a> (<A HREF="/cgi-bin/cvsweb.cgi/~checkout~/glibc.dead/soft-fp/single.h?rev=1.1.1.2" target="cvs_checkout" onClick="window.open('/cgi-bin/cvsweb.cgi/~checkout~/glibc.dead/soft-fp/single.h?rev=1.1.1.2','cvs_checkout','resizeable,scrollbars');"><b>download</b></A>)<BR>Revision <B>1.1.1.2</B> <i>(vendor branch)</i>, <i>Thu Aug 2 11:38:45 2001 UTC</i> (3 years, 4 months ago) by <i>aj</i><BR>Branch: <b>glibc-2001-09-13, MAIN</b><BR>CVS Tags: <b>glibc-pre-merge-2001-09-13, glibc-2001-08-02, HEAD, GLIBC_MAIN</b><BR>Changes since <b>1.1.1.1: +8 -8 lines</b><PRE>Import from main glibc repository at 2001-08-02.</PRE></td></tr></table><HR noshade><PRE>/* Software floating-point emulation. Definitions for IEEE Single Precision. Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson (<A HREF="mailto:rth@cygnus.com">rth@cygnus.com</A>), Jakub Jelinek (<A HREF="mailto:jj@ultra.linux.cz">jj@ultra.linux.cz</A>), David S. Miller (<A HREF="mailto:davem@redhat.com">davem@redhat.com</A>) and Peter Maydell (<A HREF="mailto:pmaydell@chiark.greenend.org.uk">pmaydell@chiark.greenend.org.uk</A>). 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. */#if _FP_W_TYPE_SIZE < 32#error "Here's a nickel kid. Go buy yourself a real computer."#endif#define _FP_FRACBITS_S 24#define _FP_FRACXBITS_S (_FP_W_TYPE_SIZE - _FP_FRACBITS_S)#define _FP_WFRACBITS_S (_FP_WORKBITS + _FP_FRACBITS_S)#define _FP_WFRACXBITS_S (_FP_W_TYPE_SIZE - _FP_WFRACBITS_S)#define _FP_EXPBITS_S 8#define _FP_EXPBIAS_S 127#define _FP_EXPMAX_S 255#define _FP_QNANBIT_S ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-2))#define _FP_IMPLBIT_S ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-1))#define _FP_OVERFLOW_S ((_FP_W_TYPE)1 << (_FP_WFRACBITS_S))/* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be chosen by the target machine. */union _FP_UNION_S{ float flt; struct {#if __BYTE_ORDER == __BIG_ENDIAN unsigned sign : 1; unsigned exp : _FP_EXPBITS_S; unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);#else unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0); unsigned exp : _FP_EXPBITS_S; unsigned sign : 1;#endif } bits __attribute__((packed));};#define FP_DECL_S(X) _FP_DECL(1,X)#define FP_UNPACK_RAW_S(X,val) _FP_UNPACK_RAW_1(S,X,val)#define FP_UNPACK_RAW_SP(X,val) _FP_UNPACK_RAW_1_P(S,X,val)#define FP_PACK_RAW_S(val,X) _FP_PACK_RAW_1(S,val,X)#define FP_PACK_RAW_SP(val,X) \ do { \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_1_P(S,val,X); \ } while (0)#define FP_UNPACK_S(X,val) \ do { \ _FP_UNPACK_RAW_1(S,X,val); \ _FP_UNPACK_CANONICAL(S,1,X); \ } while (0)#define FP_UNPACK_SP(X,val) \ do { \ _FP_UNPACK_RAW_1_P(S,X,val); \ _FP_UNPACK_CANONICAL(S,1,X); \ } while (0)#define FP_PACK_S(val,X) \ do { \ _FP_PACK_CANONICAL(S,1,X); \ _FP_PACK_RAW_1(S,val,X); \ } while (0)#define FP_PACK_SP(val,X) \ do { \ _FP_PACK_CANONICAL(S,1,X); \ if (!FP_INHIBIT_RESULTS) \ _FP_PACK_RAW_1_P(S,val,X); \ } while (0)#define FP_ISSIGNAN_S(X) _FP_ISSIGNAN(S,1,X)#define FP_NEG_S(R,X) _FP_NEG(S,1,R,X)#define FP_ADD_S(R,X,Y) _FP_ADD(S,1,R,X,Y)#define FP_SUB_S(R,X,Y) _FP_SUB(S,1,R,X,Y)#define FP_MUL_S(R,X,Y) _FP_MUL(S,1,R,X,Y)#define FP_DIV_S(R,X,Y) _FP_DIV(S,1,R,X,Y)#define FP_SQRT_S(R,X) _FP_SQRT(S,1,R,X)#define _FP_SQRT_MEAT_S(R,S,T,X,Q) _FP_SQRT_MEAT_1(R,S,T,X,Q)#define FP_CMP_S(r,X,Y,un) _FP_CMP(S,1,r,X,Y,un)#define FP_CMP_EQ_S(r,X,Y) _FP_CMP_EQ(S,1,r,X,Y)#define FP_TO_INT_S(r,X,rsz,rsg) _FP_TO_INT(S,1,r,X,rsz,rsg)#define FP_FROM_INT_S(X,r,rs,rt) _FP_FROM_INT(S,1,X,r,rs,rt)#define _FP_FRAC_HIGH_S(X) _FP_FRAC_HIGH_1(X)#define _FP_FRAC_HIGH_RAW_S(X) _FP_FRAC_HIGH_1(X)</PRE>⌨️ 快捷键说明
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