Mail Archives: cygwin/2004/07/30/21:01:43
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Attached is a simple test case of std::random_shuffle() that
gives different answers on cygwin and RH Linux. Note that
the output looks like a simple circular rotation on cygwin
but works correctly on RH 7.2. The problem appears to be
the implementation of lrand48(). If you undefine:
#undef _GLIBCPP_HAVE_DRAND48
then it works consistently.
On cygwin output is:
changes before:
0 1 2 3 4 5 6
changes after:
6 0 1 2 3 4 5
changes after:
5 6 0 1 2 3 4
changes after:
4 5 6 0 1 2 3
========
on RH7.2 output is:
changes before:
0 1 2 3 4 5 6
changes after:
1 4 2 3 5 6 0
changes after:
0 6 2 1 4 5 3
changes after:
0 1 3 6 5 4 2
=========
Version of cygwin is current (see attached file
for all version stamps)
gcc 3.3.1-3
gcc-g++ 3.3.1-3
version of gcc/g++ on Linux is 2.96.
The test program is attached as is cygcheck output.
To run it just type (note that -mno-cygwin is *not* used):
g++ xxx.cpp
./a.exe
Is this a configuration issue? Or does lrand48 not work?
Or is it a long vs. int type mismatch?
Jim
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name="cygcheck.txt"
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filename="cygcheck.txt"
Cygwin Configuration Diagnostics
Current System Time: Fri Jul 30 16:30:23 2004
Windows XP Professional Ver 5.1 Build 2600 Service Pack 1
Path: C:\cygwin\usr\local\bin
C:\cygwin\bin
C:\cygwin\usr\X11R6\bin
c:\WINDOWS\system32
c:\WINDOWS
c:\WINDOWS\System32\Wbem
c:\WinUnix\vim\vim63b
c:\jim\bin
c:\java\j2sdk14\bin
c:\Program Files\Common Files\GTK\2.0\bin
Output from C:\cygwin\bin\id.exe (nontsec)
UID: 1005(jim) GID: 513(None)
513(None) 545(Users)
Output from C:\cygwin\bin\id.exe (ntsec)
UID: 1005(jim) GID: 513(None)
0(root) 513(None)
544(Administrators) 545(Users)
SysDir: C:\WINDOWS\System32
WinDir: C:\WINDOWS
CYGWIN = `ntsec'
HOME = `c:\Jim'
PWD = `/cygdrive/c/Jim/Consult/VMI/Programs'
Use `-r' to scan registry
c: hd NTFS 57215Mb 95% CP CS UN PA FC
e: cd CDFS 589Mb 100% CS UN TOPO_US_EAST
C:\cygwin / system binmode
C:\cygwin/bin /usr/bin system binmode
C:\cygwin/lib /usr/lib system binmode
C:\cygwin\usr\X11R6\lib\X11\fonts /usr/X11R6/lib/X11/fonts system binmode
. /cygdrive system binmode,cygdrive
Found: C:\cygwin\bin\awk.exe
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cp.exe
Found: C:\cygwin\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\grep.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\mv.exe
Found: C:\cygwin\bin\rm.exe
Found: C:\cygwin\bin\sed.exe
Found: C:\cygwin\bin\sh.exe
Found: C:\cygwin\bin\tar.exe
61k 2003/08/09 C:\cygwin\bin\cygbz2-1.dll
54k 2002/01/27 C:\cygwin\bin\cygbz21.0.dll
18k 2004/07/06 C:\cygwin\bin\cygcharset-1.dll
7k 2003/10/19 C:\cygwin\bin\cygcrypt-0.dll
841k 2004/03/17 C:\cygwin\bin\cygcrypto-0.9.7.dll
645k 2003/04/11 C:\cygwin\bin\cygcrypto.dll
617k 2004/03/22 C:\cygwin\bin\cygcurl-2.dll
22k 2004/02/10 C:\cygwin\bin\cygcygipc-2.dll
380k 2002/07/24 C:\cygwin\bin\cygdb-3.1.dll
831k 2003/09/20 C:\cygwin\bin\cygdb-4.1.dll
895k 2004/04/28 C:\cygwin\bin\cygdb-4.2.dll
487k 2002/07/24 C:\cygwin\bin\cygdb_cxx-3.1.dll
1080k 2003/09/20 C:\cygwin\bin\cygdb_cxx-4.1.dll
1156k 2004/04/28 C:\cygwin\bin\cygdb_cxx-4.2.dll
155k 2004/01/07 C:\cygwin\bin\cygexpat-0.dll
71k 2004/01/13 C:\cygwin\bin\cygexslt-0.dll
129k 2004/03/11 C:\cygwin\bin\cygfontconfig-1.dll
45k 2001/04/25 C:\cygwin\bin\cygform5.dll
35k 2002/01/09 C:\cygwin\bin\cygform6.dll
48k 2003/08/09 C:\cygwin\bin\cygform7.dll
361k 2003/10/25 C:\cygwin\bin\cygfreetype-6.dll
28k 2003/07/20 C:\cygwin\bin\cyggdbm-3.dll
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19k 2003/03/22 C:\cygwin\bin\cyggdbm.dll
15k 2003/07/20 C:\cygwin\bin\cyggdbm_compat-3.dll
15k 2003/08/11 C:\cygwin\bin\cyggdbm_compat-4.dll
349k 2003/12/08 C:\cygwin\bin\cygGraphicsMagick++-0.dll
2169k 2003/12/08 C:\cygwin\bin\cygGraphicsMagick-0.dll
1506k 2003/11/05 C:\cygwin\bin\cyggsl-0.dll
190k 2003/11/05 C:\cygwin\bin\cyggslcblas-0.dll
489k 2003/08/09 C:\cygwin\bin\cygguile-12.dll
489k 2003/07/28 C:\cygwin\bin\cygguile-12abi13.dll
24k 2003/08/09 C:\cygwin\bin\cygguile-ltdl-1.dll
24k 2003/07/28 C:\cygwin\bin\cygguile-ltdl-1abi13.dll
62k 2003/08/09 C:\cygwin\bin\cygguile-srfi-srfi-13-14-v-1-1.dll
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23k 2003/08/09 C:\cygwin\bin\cygguile-srfi-srfi-4-v-1-1.dll
23k 2003/07/28 C:\cygwin\bin\cygguile-srfi-srfi-4-v-1-1abi13.dll
11k 2003/08/09 C:\cygwin\bin\cygguilereadline-v-12-12.dll
11k 2003/07/28 C:\cygwin\bin\cygguilereadline-v-12-12abi13.dll
17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll
29k 2003/08/10 C:\cygwin\bin\cyghistory5.dll
330k 2004/02/09 C:\cygwin\bin\cyghttpd.dll
958k 2003/08/10 C:\cygwin\bin\cygiconv-2.dll
22k 2001/12/13 C:\cygwin\bin\cygintl-1.dll
37k 2003/08/10 C:\cygwin\bin\cygintl-2.dll
21k 2001/06/20 C:\cygwin\bin\cygintl.dll
48k 2003/08/10 C:\cygwin\bin\cygjbig1.dll
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32k 2003/08/18 C:\cygwin\bin\cygltdl-3.dll
349k 2003/12/26 C:\cygwin\bin\cygMagick++-6.dll
2157k 2003/03/15 C:\cygwin\bin\cygMagick-5-5-6-Q16-0.dll
2354k 2003/12/26 C:\cygwin\bin\cygMagick-6.dll
26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll
20k 2002/01/09 C:\cygwin\bin\cygmenu6.dll
29k 2003/08/09 C:\cygwin\bin\cygmenu7.dll
15k 2003/11/20 C:\cygwin\bin\cygminires.dll
156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll
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226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll
202k 2002/01/09 C:\cygwin\bin\cygncurses6.dll
224k 2003/08/09 C:\cygwin\bin\cygncurses7.dll
15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll
12k 2002/01/09 C:\cygwin\bin\cygpanel6.dll
19k 2003/08/09 C:\cygwin\bin\cygpanel7.dll
62k 2003/12/11 C:\cygwin\bin\cygpcre-0.dll
63k 2003/04/11 C:\cygwin\bin\cygpcre.dll
9k 2003/12/11 C:\cygwin\bin\cygpcreposix-0.dll
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1049k 2003/11/07 C:\cygwin\bin\cygperl5_8_2.dll
168k 2003/08/10 C:\cygwin\bin\cygpng10.dll
173k 2003/08/10 C:\cygwin\bin\cygpng12.dll
22k 2002/06/09 C:\cygwin\bin\cygpopt-0.dll
108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll
148k 2003/08/10 C:\cygwin\bin\cygreadline5.dll
66k 2001/11/20 C:\cygwin\bin\cygregex.dll
171k 2004/03/17 C:\cygwin\bin\cygssl-0.9.7.dll
165k 2003/04/11 C:\cygwin\bin\cygssl.dll
254k 2003/09/18 C:\cygwin\bin\cygtidy-0-99-0.dll
281k 2003/02/24 C:\cygwin\bin\cygtiff3.dll
282k 2003/08/11 C:\cygwin\bin\cygtiff4.dll
27k 2004/03/05 C:\cygwin\bin\cygungif-4.dll
2689k 2002/11/16 C:\cygwin\bin\cygxerces-c21.dll
2984k 2003/02/07 C:\cygwin\bin\cygxerces-c22.dll
3006k 2003/10/12 C:\cygwin\bin\cygxerces-c23.dll
1172k 2004/01/10 C:\cygwin\bin\cygxml2-2.dll
191k 2004/01/13 C:\cygwin\bin\cygxslt-1.dll
61k 2003/12/04 C:\cygwin\bin\cygz.dll
1126k 2004/05/26 C:\cygwin\bin\cygwin1.dll
Cygwin DLL version info:
DLL version: 1.5.10
DLL epoch: 19
DLL bad signal mask: 19005
DLL old termios: 5
DLL malloc env: 28
API major: 0
API minor: 116
Shared data: 4
DLL identifier: cygwin1
Mount registry: 2
Cygnus registry name: Cygnus Solutions
Cygwin registry name: Cygwin
Program options name: Program Options
Cygwin mount registry name: mounts v2
Cygdrive flags: cygdrive flags
Cygdrive prefix: cygdrive prefix
Cygdrive default prefix:
Build date: Tue May 25 22:07:00 EDT 2004
CVS tag: cr-0x5e6
Shared id: cygwin1S4
237k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygdps-1.dll
25k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygdpstk-1.dll
21k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygfontenc-1.dll
282k 2003/10/28 C:\cygwin\usr\X11R6\bin\cygfreetype-9.dll
36k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygFS-6.dll
431k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygGL-1.dll
437k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygGLU-1.dll
74k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygICE-6.dll
9k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygoldX-6.dll
1250k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygOSMesa-4.dll
41k 2002/05/14 C:\cygwin\usr\X11R6\bin\cygPropList-0.dll
20k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygpsres-1.dll
30k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygSM-6.dll
869k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygX11-6.dll
253k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXaw-6.dll
355k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXaw-7.dll
275k 2004/01/13 C:\cygwin\usr\X11R6\bin\cygXaw3d-7.dll
30k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXcursor-1.dll
49k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXext-6.dll
7k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXfontcache-1.dll
56k 2004/03/11 C:\cygwin\usr\X11R6\bin\cygXft-1.dll
63k 2004/03/23 C:\cygwin\usr\X11R6\bin\cygXft-2.dll
27k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXi-6.dll
124k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygxkbfile-1.dll
12k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygxkbui-1.dll
76k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXmu-6.dll
11k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXmuu-1.dll
26k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXp-6.dll
51k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXpm-4.dll
11k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXrandr-2.dll
27k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXrender-1.dll
8k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXRes-1.dll
282k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXt-6.dll
27k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXTrap-6.dll
17k 2004/04/10 C:\cygwin\usr\X11R6\bin\cygXtst-6.dll
Cygwin Package Information
Package Version
_update-info-dir 00227-1
apache 1.3.29-2
ash 20040127-1
astyle 1.15.3-3
autoconf 2.59-1
autoconf-devel 2.59-1
autoconf-stable 2.13-5
automake 1.7.9-1
automake-devel 1.8.5-1
automake-stable 1.4p6-2
base-files 2.6-1
base-passwd 1.1-1
bash 2.05b-16
bc 1.06-1
binutils 20040312-1
bison 20030307-1
byacc 1.9-1
bzip2 1.0.2-5
ccache 2.2-1
check 0.8.4-1
clear 1.0-1
cpio 2.5-3
crypt 1.1-1
ctags 5.5-4
curl 7.11.1-1
curl-devel 7.11.1-1
cvs 1.11.6-3
cygipc 2.03-2
cygrunsrv 1.0-1
cygutils 1.2.5-1
cygwin 1.5.10-3
cygwin-doc 1.3-7
cygwin-x-doc 1.0.4-1
dejagnu 20021217-2
diffutils 2.8.7-1
dpkg 1.10.4-2
ed 0.2-1
editrights 1.01-1
ELFIO 1.0.0-1
emacs 21.2-13
enscript 1.6.3-3
expat 1.95.7-1
expect 20030128-1
file 4.09-1
fileutils 4.1-2
findutils 4.1.7-4
flex 2.5.4a-3
fontconfig 2.2.2-1
freetype2 2.1.5-1
gawk 3.1.3-4
gcc 3.3.1-3
gcc-g++ 3.3.1-3
gcc-java 3.3.1-3
gcc-mingw 20030911-4
gcc-mingw-core 20031020-1
gcc-mingw-g++ 20031020-1
gcc-mingw-java 20031020-1
gdb 20030919-1
gdbm 1.8.3-7
gettext 0.14.1-1
gettext-devel 0.14.1-1
ghostscript 7.05-2
ghostscript-base 7.05-2
ghostscript-x11 7.05-2
gperf 2.7.2-1
GraphicsMagick 1.0.4-1
grep 2.5-1
groff 1.18.1-2
gsl 1.4-2
guile 1.6.4-12
guile-devel 1.6.4-12
gzip 1.3.5-1
ImageMagick 5.5.7-2
indent 2.2.9-1
inetutils 1.3.2-28
jbigkit 1.5-3
jim-dev 0.0.1-1
jim-user 0.0.1-1
jim-user-min 0.0.1-1
jpeg 6b-11
keychain 2.0.3-2
less 381-1
libbz2_0 1.0.2-1
libbz2_1 1.0.2-5
libcharset1 1.9.2-1
libdb3.1 3.1.17-2
libdb4.1 4.1.25-1
libdb4.2 4.2.52-1
libfontconfig-devel 2.2.2-1
libfontconfig1 2.2.2-1
libfreetype2-devel 2.1.5-1
libfreetype26 2.1.5-1
libgdbm 1.8.0-5
libgdbm-devel 1.8.3-7
libgdbm3 1.8.3-3
libgdbm4 1.8.3-7
libGraphicsMagick0 1.0.4-1
libguile12 1.6.4-12
libguile12abi13 1.6.4-2
libiconv 1.9.1-3
libiconv2 1.9.1-3
libintl 0.10.38-3
libintl1 0.10.40-1
libintl2 0.12.1-3
libjpeg62 6b-11
libjpeg6b 6b-8
libkpathsea3 2.0.2-13
libkpathsea3abi13 2.0.2-2
libltdl3 1.5-3
libMagick6 5.5.7-2
libncurses5 5.2-1
libncurses6 5.2-8
libncurses7 5.3-4
libpcre 4.1-1
libpcre0 4.5-1
libpng 1.2.5-4
libpng10 1.0.15-4
libpng12 1.2.5-4
libpng12-devel 1.2.5-4
libpopt0 1.6.4-4
libPropList 0.10.1-3
libreadline4 4.1-2
libreadline5 4.3-5
libtiff-devel 3.6.0-5
libtiff3 3.6.0-2
libtiff4 3.6.0-5
libtool 1.5b-1
libtool-devel 1.5-3
libtool-stable 1.4.3-2
libungif 4.1.0-3
libxerces-c21 2.1.0-1
libxerces-c22 2.2.0-1
libxerces-c23 2.3.0-4
libXft 2.1.6-1
libXft-devel 2.1.6-1
libXft1 1.0.0-1
libXft2 2.1.6-1
libxml2 2.6.4-1
libxslt 1.1.2-1
links 0.99pre14-1
login 1.9-7
lynx 2.8.4-7
m4 1.4-1
make 3.80-1
man 1.5k-3
mingw-runtime 3.3-1
minires 0.97-1
mktemp 1.5-3
mod_auth_ntsec 1.7-1
mod_dav 1.0.3-1.3.6-1
mod_php4 4.2.0-2
mod_ssl 2.8.8-1.3.24-1
ncftp 3.1.4-1
ncurses 5.3-4
netcat 1.10-2
openbox 0.99.1-4
openssh 3.8.1p1-1
openssl 0.9.7d-1
openssl-devel 0.9.7d-1
openssl096 0.9.6j-1
patch 2.5.8-8
patchutils 0.2.30pre1-1
pcre 4.5-1
pcre-doc 4.5-1
perl 5.8.2-1
pinfo 0.6.8-1
pkgconfig 0.15.0-4
popt 1.6.4-4
postgresql 7.4.1-3
procps 010801-2
python 2.3.3-2
rcs 5.7-3
readline 4.3-5
rebase 2.3-1
regex 4.4-2
rpm 4.1-1
rsync 2.6.0-1
rxvt 2.7.10-4
sed 4.0.9-2
sh-utils 2.0.15-4
sharutils 4.2.1-3
shutdown 1.4-1
sunrpc 4.0-2
swig 1.3.19-1
tar 1.13.25-5
tcltk 20030901-1
termcap 20021106-2
terminfo 5.3_20030726-1
tetex 2.0.2-13
tetex-base 2.0.2-13
tetex-bin 2.0.2-13
tetex-devel 2.0.2-13
tetex-doc 2.0.2-13
tetex-extra 2.0.2-13
tetex-tiny 2.0.2-13
tetex-x11 2.0.2-13
texinfo 4.2-4
textutils 2.0.21-1
tidy 030901-1
tiff 3.6.0-5
time 1.7-1
transfig 3.2.4-2
unzip 5.50-5
vim 6.3-1
w32api 2.5-1
wget 1.9.1-1
which 1.5-2
WindowMaker 0.80.2-1
wtf 0.0.4-6
X-start-menu-icons 1.0.1-1
X-startup-scripts 1.0.7-1
x2x 1.30-2
Xaw3d 1.5D-5
xfig 3.2.4-6
xfig-base 3.2.4-1
xfig-bin 3.2.4-3
xfig-doc 3.2.4-2
xfig-etc 3.2.4-4
xfig-lib 3.2.4-6
xfig-man 3.2.4-2
XFree86-base 4.3.0-11
XFree86-bin 4.3.0-21
XFree86-bin-icons 4.3.0-7
XFree86-doc 4.3.0-2
XFree86-etc 4.3.0-12
XFree86-f100 4.3.0-2
XFree86-fenc 4.3.0-2
XFree86-fnts 4.3.0-2
XFree86-fscl 4.3.0-2
XFree86-fsrv 4.3.0-9
XFree86-html 4.3.0-10
XFree86-lib 4.3.0-3
XFree86-lib-compat 4.3.0-2
XFree86-man 4.3.0-10
XFree86-nest 4.3.0-8
XFree86-prog 4.3.0-21
XFree86-prt 4.3.0-6
XFree86-ps 4.3.0-2
XFree86-startup-scripts 4.3.0-1
XFree86-xserv 4.3.0-68
XFree86-xwinclip 4.3.0-3
xorg-x11-base 6.7.0.0-8
xorg-x11-bin 6.7.0.0-4
xorg-x11-bin-dlls 6.7.0.0-4
xorg-x11-bin-lndir 6.7.0.0-2
xorg-x11-devel 6.7.0.0-4
xorg-x11-etc 6.7.0.0-3
xorg-x11-f100 6.7.0.0-1
xorg-x11-fenc 6.7.0.0-2
xorg-x11-fnts 6.7.0.0-1
xorg-x11-fscl 6.7.0.0-3
xorg-x11-fsrv 6.7.0.0-1
xorg-x11-libs-data 6.7.0.0-2
xorg-x11-man-pages 6.7.0.0-2
xorg-x11-man-pages-html 6.7.0.0-2
xorg-x11-nest 6.7.0.0-2
xorg-x11-xwin 6.7.0.0-9
xterm 185-4
zip 2.3-6
zlib 1.2.1-1
Use -h to see help about each section
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name="xxx.cpp"
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Content-Disposition: inline;
filename="xxx.cpp"
#include <stdlib.h>
#include <stdio.h>
#include <vector>
// Uncomment the next line to use the lesser strength rand() implementation
//#undef _GLIBCPP_HAVE_DRAND48
#include <algorithm>
int
main(int argc, char** argv)
{
std::vector<double> changes;
changes.push_back(0.0);
changes.push_back(1.0);
changes.push_back(2.0);
changes.push_back(3.0);
changes.push_back(4.0);
changes.push_back(5.0);
changes.push_back(6.0);
// Now construct random draws and compute the randomized bars
// in a "consistent" way.
printf("\nchanges before:\n");
for (unsigned int i = 0; i < changes.size(); i++) {
printf("%g ", changes[i]);
}
std::random_shuffle(changes.begin(), changes.end());
printf("\nchanges after:\n");
for (unsigned int i = 0; i < changes.size(); i++) {
printf("%g ", changes[i]);
}
std::random_shuffle(changes.begin(), changes.end());
printf("\nchanges after:\n");
for (unsigned int i = 0; i < changes.size(); i++) {
printf("%g ", changes[i]);
}
std::random_shuffle(changes.begin(), changes.end());
printf("\nchanges after:\n");
for (unsigned int i = 0; i < changes.size(); i++) {
printf("%g ", changes[i]);
}
return 0;
}
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