Re: [perl #24091] Not OK: perl v5.8.1 on sgi6-irix-ld 6.5

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Re: [perl #24091] Not OK: perl v5.8.1 on sgi6-irix-ld 6.5

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From:

Tels

Date:

October 7, 2003 11:18

Subject:

Re: [perl #24091] Not OK: perl v5.8.1 on sgi6-irix-ld 6.5

Message ID:

200310072020.02344@bloodgate.com

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Moin,

On Tuesday 07 October 2003 20:12, Tels wrote:

This is very wierd:

# perl -MPOSIX -le '$a = (81 ** 3) ** (1/3); print join(" ", $a, int ($a), 
POSIX::floor($a), sprintf("%f",$a), sprintf ("%.0f",$a))'
81 80 80 81.000000 81

Why is $a sometimes 81, and sometimes 80? Why does int(81) produce 80?

This is with perl v5.8.1, not v5.8.0 as I claimed:

te@null:~/perl/math/Math-BigInt-1.67> perl -V
Summary of my perl5 (revision 5.0 version 8 subversion 1) configuration:
  Platform:
    osname=linux, osvers=2.4.20-4gb-athlon, archname=i686-linux
    uname='linux null 2.4.20-4gb-athlon #1 wed aug 6 18:27:52 utc 2003 i686 
unknown unknown gnulinux '
    config_args='-ds -e'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef 
usemultiplicity=undef
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-fno-strict-aliasing -I/usr/local/include 
- -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O3',
    cppflags='-fno-strict-aliasing -I/usr/local/include'
    ccversion='', gccversion='3.3 20030226 (prerelease) (SuSE Linux)', 
gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    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, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -ldl -lm -lcrypt -lutil -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
    libc=, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.3.2'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
    cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'


Characteristics of this binary (from libperl):
  Compile-time options: USE_LARGE_FILES
  Built under linux
  Compiled at Sep 27 2003 20:55:34
  @INC:
    /usr/local/lib/perl5/5.8.1/i686-linux
    /usr/local/lib/perl5/5.8.1
    /usr/local/lib/perl5/site_perl/5.8.1/i686-linux
    /usr/local/lib/perl5/site_perl/5.8.1
    /usr/local/lib/perl5/site_perl
    .

Best wishes,

Tels

- -- 
 Signed on Tue Oct  7 20:17:51 2003 with key 0x93B84C15.
 Visit my photo gallery at http://bloodgate.com/photos/
 PGP key on http://bloodgate.com/tels.asc or per email.

 "Wo die Schononen schön wohnen."

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