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[ID 20000420.006] rounding floating numbers by *printf is not good.
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From:
TOMITA Shigenari
Date:
April 20, 2000 23:05
Subject:
[ID 20000420.006] rounding floating numbers by *printf is not good.
Message ID:
200004210604.PAA08240@max.icu.ac.jp
This is a bug report for perl from ts@mojijm.jm.icu.ac.jp,
generated with the help of perlbug 1.26 running under perl 5.006.
-----------------------------------------------------------------
[Please enter your report here]
Hi,
Return value of sprintf( "%2.0f", 0.5 ) is 0!
But *printf for the value 1.5 works great!
Many numbers are also rounded badly.
You can play adding some 0's and 1 after 0.5,
say 0.501 or 0.5000000000000001. :}
Cheers,
-- Shige, ts@icu.ac.jp
[Please do not change anything below this line]
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---
This perlbug was built using Perl 5.00503 - $Date: 1999/05/05 19:42:40 $
It is being executed now by Perl 5.006 - Fri Apr 21 12:09:12 JST 2000.
Site configuration information for perl 5.006:
Configured by ts at Fri Apr 21 12:09:12 JST 2000.
Summary of my perl5 (revision 5.0 version 6 subversion 0) configuration:
Platform:
osname=freebsd, osvers=3.4-release, archname=i386-freebsd
uname='freebsd mojijm.jm.icu.ac.jp 3.4-release freebsd 3.4-release #0: mon dec 20 06:54:39 gmt 1999 jkh@time.cdrom.com:usrsrcsyscompilegeneric i386 '
config_args='-de'
hint=recommended, useposix=true, d_sigaction=define
usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
useperlio=undef d_sfio=undef uselargefiles=define
use64bitint=undef use64bitall=undef uselongdouble=undef usesocks=undef
Compiler:
cc='cc', optimize='-O', gccversion=2.7.2.3
cppflags='-I/usr/local/include'
ccflags ='-I/usr/local/include'
stdchar='char', d_stdstdio=undef, usevfork=true
intsize=4, longsize=4, ptrsize=4, doublesize=8
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
alignbytes=4, usemymalloc=n, prototype=define
Linker and Libraries:
ld='cc', ldflags ='-Wl,-E -L/usr/local/lib'
libpth=/usr/lib /usr/local/lib
libs=-lgdbm -lm -lc -lcrypt
libc=/usr/lib/libc.so, so=so, useshrplib=false, libperl=libperl.a
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' '
cccdlflags='-DPIC -fpic', lddlflags='-shared -L/usr/local/lib'
Locally applied patches:
---
@INC for perl 5.006:
/usr/local/lib/perl5/5.6.0/i386-freebsd
/usr/local/lib/perl5/5.6.0
/usr/local/lib/perl5/site_perl/5.6.0/i386-freebsd
/usr/local/lib/perl5/site_perl/5.6.0
/usr/local/lib/perl5/site_perl/5.005/i386-freebsd
/usr/local/lib/perl5/site_perl/5.005
/usr/local/lib/perl5/site_perl
.
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Environment for perl 5.006:
HOME=/home/ts
LANG (unset)
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/home/ts/bin:/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin
PERL_BADLANG (unset)
SHELL=/usr/local/bin/bash
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[ID 20000420.006] rounding floating numbers by *printf is not good.
by TOMITA Shigenari