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Viewing changes to src/dom/js/fdlibm/s_floor.c

Committer: ishmal
Date: 2006-04-12 13:25:21 UTC
Revision ID: ishmal@users.sourceforge.net-20060412132521-5ynoezpwbzq4d1c3

Add new rearranged /dom directory

files added:
src/dom

src/dom/Makefile.mingw

src/dom/Makefile_insert

src/dom/charclass.cpp

src/dom/charclass.h

src/dom/css.h

src/dom/cssparser.cpp

src/dom/cssparser.h

src/dom/dom.h

src/dom/domimpl.cpp

src/dom/domimpl.h

src/dom/domstring.cpp

src/dom/domstring.h

src/dom/domstringimpl.h

src/dom/events.h

src/dom/io

src/dom/io/base64stream.cpp

src/dom/io/base64stream.h

src/dom/io/bufferstream.cpp

src/dom/io/bufferstream.h

src/dom/io/domstream.cpp

src/dom/io/domstream.h

src/dom/io/gzipstream.cpp

src/dom/io/gzipstream.h

src/dom/io/httpclient.cpp

src/dom/io/httpclient.h

src/dom/io/socket.cpp

src/dom/io/socket.h

src/dom/io/stringstream.cpp

src/dom/io/stringstream.h

src/dom/io/uristream.cpp

src/dom/io/uristream.h

src/dom/js

src/dom/js/fdlibm

src/dom/js/fdlibm/.cvsignore

src/dom/js/fdlibm/CVS

src/dom/js/fdlibm/CVS/Entries

src/dom/js/fdlibm/CVS/Repository

src/dom/js/fdlibm/CVS/Root

src/dom/js/fdlibm/CVS/Tag

src/dom/js/fdlibm/Makefile.in

src/dom/js/fdlibm/Makefile.ref

src/dom/js/fdlibm/e_acos.c

src/dom/js/fdlibm/e_acosh.c

src/dom/js/fdlibm/e_asin.c

src/dom/js/fdlibm/e_atan2.c

src/dom/js/fdlibm/e_atanh.c

src/dom/js/fdlibm/e_cosh.c

src/dom/js/fdlibm/e_exp.c

src/dom/js/fdlibm/e_fmod.c

src/dom/js/fdlibm/e_gamma.c

src/dom/js/fdlibm/e_gamma_r.c

src/dom/js/fdlibm/e_hypot.c

src/dom/js/fdlibm/e_j0.c

src/dom/js/fdlibm/e_j1.c

src/dom/js/fdlibm/e_jn.c

src/dom/js/fdlibm/e_lgamma.c

src/dom/js/fdlibm/e_lgamma_r.c

src/dom/js/fdlibm/e_log.c

src/dom/js/fdlibm/e_log10.c

src/dom/js/fdlibm/e_pow.c

src/dom/js/fdlibm/e_rem_pio2.c

src/dom/js/fdlibm/e_remainder.c

src/dom/js/fdlibm/e_scalb.c

src/dom/js/fdlibm/e_sinh.c

src/dom/js/fdlibm/e_sqrt.c

src/dom/js/fdlibm/fdlibm.h

src/dom/js/fdlibm/fdlibm.mak

src/dom/js/fdlibm/fdlibm.mdp

src/dom/js/fdlibm/k_cos.c

src/dom/js/fdlibm/k_rem_pio2.c

src/dom/js/fdlibm/k_sin.c

src/dom/js/fdlibm/k_standard.c

src/dom/js/fdlibm/k_tan.c

src/dom/js/fdlibm/s_asinh.c

src/dom/js/fdlibm/s_atan.c

src/dom/js/fdlibm/s_cbrt.c

src/dom/js/fdlibm/s_ceil.c

src/dom/js/fdlibm/s_copysign.c

src/dom/js/fdlibm/s_cos.c

src/dom/js/fdlibm/s_erf.c

src/dom/js/fdlibm/s_expm1.c

src/dom/js/fdlibm/s_fabs.c

src/dom/js/fdlibm/s_finite.c

src/dom/js/fdlibm/s_floor.c

src/dom/js/fdlibm/s_frexp.c

src/dom/js/fdlibm/s_ilogb.c

src/dom/js/fdlibm/s_isnan.c

src/dom/js/fdlibm/s_ldexp.c

src/dom/js/fdlibm/s_lib_version.c

src/dom/js/fdlibm/s_log1p.c

src/dom/js/fdlibm/s_logb.c

src/dom/js/fdlibm/s_matherr.c

src/dom/js/fdlibm/s_modf.c

src/dom/js/fdlibm/s_nextafter.c

src/dom/js/fdlibm/s_rint.c

src/dom/js/fdlibm/s_scalbn.c

src/dom/js/fdlibm/s_signgam.c

src/dom/js/fdlibm/s_significand.c

src/dom/js/fdlibm/s_sin.c

src/dom/js/fdlibm/s_tan.c

src/dom/js/fdlibm/s_tanh.c

src/dom/js/fdlibm/w_acos.c

src/dom/js/fdlibm/w_acosh.c

src/dom/js/fdlibm/w_asin.c

src/dom/js/fdlibm/w_atan2.c

src/dom/js/fdlibm/w_atanh.c

src/dom/js/fdlibm/w_cosh.c

src/dom/js/fdlibm/w_exp.c

src/dom/js/fdlibm/w_fmod.c

src/dom/js/fdlibm/w_gamma.c

src/dom/js/fdlibm/w_gamma_r.c

src/dom/js/fdlibm/w_hypot.c

src/dom/js/fdlibm/w_j0.c

src/dom/js/fdlibm/w_j1.c

src/dom/js/fdlibm/w_jn.c

src/dom/js/fdlibm/w_lgamma.c

src/dom/js/fdlibm/w_lgamma_r.c

src/dom/js/fdlibm/w_log.c

src/dom/js/fdlibm/w_log10.c

src/dom/js/fdlibm/w_pow.c

src/dom/js/fdlibm/w_remainder.c

src/dom/js/fdlibm/w_scalb.c

src/dom/js/fdlibm/w_sinh.c

src/dom/js/fdlibm/w_sqrt.c

src/dom/js/js.c

src/dom/js/js.mak

src/dom/js/js.msg

src/dom/js/jsapi.c

src/dom/js/jsapi.h

src/dom/js/jsarena.c

src/dom/js/jsarena.h

src/dom/js/jsarray.c

src/dom/js/jsarray.h

src/dom/js/jsatom.c

src/dom/js/jsatom.h

src/dom/js/jsbit.h

src/dom/js/jsbool.c

src/dom/js/jsbool.h

src/dom/js/jsclist.h

src/dom/js/jscntxt.c

src/dom/js/jscntxt.h

src/dom/js/jscompat.h

src/dom/js/jsconfig.h

src/dom/js/jsconfig.mk

src/dom/js/jscpucfg.c

src/dom/js/jscpucfg.h

src/dom/js/jsdate.c

src/dom/js/jsdate.h

src/dom/js/jsdbgapi.c

src/dom/js/jsdbgapi.h

src/dom/js/jsdhash.c

src/dom/js/jsdhash.h

src/dom/js/jsdtoa.c

src/dom/js/jsdtoa.h

src/dom/js/jsemit.c

src/dom/js/jsemit.h

src/dom/js/jsexn.c

src/dom/js/jsexn.h

src/dom/js/jsfile.c

src/dom/js/jsfile.h

src/dom/js/jsfile.msg

src/dom/js/jsfun.c

src/dom/js/jsfun.h

src/dom/js/jsgc.c

src/dom/js/jsgc.h

src/dom/js/jshash.c

src/dom/js/jshash.h

src/dom/js/jsinterp.c

src/dom/js/jsinterp.h

src/dom/js/jslibmath.h

src/dom/js/jslock.c

src/dom/js/jslock.h

src/dom/js/jslocko.asm

src/dom/js/jslog2.c

src/dom/js/jslong.c

src/dom/js/jslong.h

src/dom/js/jsmath.c

src/dom/js/jsmath.h

src/dom/js/jsnum.c

src/dom/js/jsnum.h

src/dom/js/jsobj.c

src/dom/js/jsobj.h

src/dom/js/jsopcode.c

src/dom/js/jsopcode.h

src/dom/js/jsopcode.tbl

src/dom/js/jsosdep.h

src/dom/js/jsotypes.h

src/dom/js/jsparse.c

src/dom/js/jsparse.h

src/dom/js/jsprf.c

src/dom/js/jsprf.h

src/dom/js/jsprvtd.h

src/dom/js/jspubtd.h

src/dom/js/jsregexp.c

src/dom/js/jsregexp.h

src/dom/js/jsscan.c

src/dom/js/jsscan.h

src/dom/js/jsscope.c

src/dom/js/jsscope.h

src/dom/js/jsscript.c

src/dom/js/jsscript.h

src/dom/js/jsshell.msg

src/dom/js/jsstddef.h

src/dom/js/jsstr.c

src/dom/js/jsstr.h

src/dom/js/jstypes.h

src/dom/js/jsutil.c

src/dom/js/jsutil.h

src/dom/js/jsxdrapi.c

src/dom/js/jsxdrapi.h

src/dom/js/prmjtime.c

src/dom/js/prmjtime.h

src/dom/js/resource.h

src/dom/ls.h

src/dom/lsimpl.cpp

src/dom/lsimpl.h

src/dom/mingwenv.bat

src/dom/minidom.cpp

src/dom/minidom.h

src/dom/odf

src/dom/odf/SvgOdg.cpp

src/dom/odf/odfdocument.cpp

src/dom/odf/odfdocument.h

src/dom/phoebedom.h

src/dom/prop-css.cpp

src/dom/prop-css2.cpp

src/dom/prop-svg.cpp

src/dom/smil.h

src/dom/smilimpl.cpp

src/dom/smilimpl.h

src/dom/stylesheets.h

src/dom/svg

src/dom/svg/svg.h

src/dom/svg/svg.idl

src/dom/svg/svgimpl.cpp

src/dom/svg/svgimpl.h

src/dom/svg/svglsimpl.cpp

src/dom/svg/svglsimpl.h

src/dom/svg/svgparser.cpp

src/dom/svg/svgparser.h

src/dom/svg/svgtypes.h

src/dom/traversal.h

src/dom/uri.cpp

src/dom/uri.h

src/dom/util

src/dom/util/thread.cpp

src/dom/util/thread.h

src/dom/util/ziptool.cpp

src/dom/util/ziptool.h

src/dom/views.h

src/dom/work

src/dom/work/001.css

src/dom/work/acid.css

src/dom/work/base.css

src/dom/work/css.idl

src/dom/work/cssprop.txt

src/dom/work/dom.idl

src/dom/work/events.idl

src/dom/work/inkscape.css

src/dom/work/ls.idl

src/dom/work/meyerweb.css

src/dom/work/prop-css.txt

src/dom/work/prop-svg.txt

src/dom/work/ranges.idl

src/dom/work/sandb1.css

src/dom/work/smil.idl

src/dom/work/stylesheets.idl

src/dom/work/testdom.cpp

src/dom/work/testhttp.cpp

src/dom/work/testodf.cpp

src/dom/work/testsvg.cpp

src/dom/work/testuri.cpp

src/dom/work/testxpath.cpp

src/dom/work/testzip.cpp

src/dom/work/traversal.idl

src/dom/work/views.idl

src/dom/work/xpath.idl

src/dom/work/xpathtests.cpp

src/dom/xmlreader.cpp

src/dom/xmlreader.h

src/dom/xmlwriter.cpp

src/dom/xmlwriter.h

src/dom/xpath.h

src/dom/xpathimpl.cpp

src/dom/xpathimpl.h

src/dom/xpathparser.cpp

src/dom/xpathparser.h

src/dom/xpathtoken.cpp

src/dom/xpathtoken.h

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src/dom/js/fdlibm/s_floor.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

* ***** BEGIN LICENSE BLOCK *****

* Version: MPL 1.1/GPL 2.0/LGPL 2.1

* The contents of this file are subject to the Mozilla Public License Version

* 1.1 (the "License"); you may not use this file except in compliance with

* the License. You may obtain a copy of the License at

* http://www.mozilla.org/MPL/

* Software distributed under the License is distributed on an "AS IS" basis,

* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License

* for the specific language governing rights and limitations under the

* License.

* The Original Code is Mozilla Communicator client code, released

* March 31, 1998.

* The Initial Developer of the Original Code is

* Sun Microsystems, Inc.

* Contributor(s):

* Alternatively, the contents of this file may be used under the terms of

* either of the GNU General Public License Version 2 or later (the "GPL"),

* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),

* in which case the provisions of the GPL or the LGPL are applicable instead

* of those above. If you wish to allow use of your version of this file only

* under the terms of either the GPL or the LGPL, and not to allow others to

* use your version of this file under the terms of the MPL, indicate your

* decision by deleting the provisions above and replace them with the notice

* and other provisions required by the GPL or the LGPL. If you do not delete

* the provisions above, a recipient may use your version of this file under

* the terms of any one of the MPL, the GPL or the LGPL.

* ***** END LICENSE BLOCK ***** */

/* @(#)s_floor.c 1.3 95/01/18 */

* ====================================================

* Developed at SunSoft, a Sun Microsystems, Inc. business.

* Permission to use, copy, modify, and distribute this

* software is freely granted, provided that this notice

* is preserved.

* ====================================================

* floor(x)

* Return x rounded toward -inf to integral value

* Method:

* Bit twiddling.

* Exception:

* Inexact flag raised if x not equal to floor(x).

#include "fdlibm.h"

#ifdef __STDC__

static const double really_big = 1.0e300;

#else

static double really_big = 1.0e300;

#endif

#ifdef __STDC__

double fd_floor(double x)

#else

double fd_floor(x)

double x;

#endif

{

fd_twoints u;

int i0,i1,j0;

unsigned i,j;

u.d = x;

i0 = __HI(u);

i1 = __LO(u);

j0 = ((i0>>20)&0x7ff)-0x3ff;

if(j0<20) {

if(j0<0) { /* raise inexact if x != 0 */

if(really_big+x>0.0) {/* return 0*sign(x) if |x|<1 */

if(i0>=0) {i0=i1=0;}

else if(((i0&0x7fffffff)|i1)!=0)

{ i0=0xbff00000;i1=0;}

}

} else {

i = (0x000fffff)>>j0;

if(((i0&i)|i1)==0) return x; /* x is integral */

if(really_big+x>0.0) { /* raise inexact flag */

if(i0<0) i0 += (0x00100000)>>j0;

i0 &= (~i); i1=0;

}

} else if (j0>51) {

if(j0==0x400) return x+x; /* inf or NaN */

100

else return x; /* x is integral */

101

} else {

102

i = ((unsigned)(0xffffffff))>>(j0-20);

103

if((i1&i)==0) return x; /* x is integral */

104

if(really_big+x>0.0) { /* raise inexact flag */

105

if(i0<0) {

106

if(j0==20) i0+=1;

107

else {

108

j = i1+(1<<(52-j0));

109

if((int)j<i1) i0 +=1 ; /* got a carry */

110

i1=j;

111

}

112

}

113

i1 &= (~i);

114

}

115

}

116

u.d = x;

117

__HI(u) = i0;

118

__LO(u) = i1;

119

x = u.d;

120

return x;

121

}

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