Bug 136847 – bc -l truncates output to integer values

• Product: Gentoo Linux
• Status: RESOLVED DUPLICATE

[Description Frank T. Lofaro Jr. 2006-06-14 21:41:45 UTC]

# emerge --info
Portage 2.1 (default-linux/x86/2006.0, gcc-4.1.1/vanilla, glibc-2.4-r3, 2.6.16-gentoo-r8 i686)
=================================================================
System uname: 2.6.16-gentoo-r8 i686 Pentium II (Deschutes)
Gentoo Base System version 1.12.1
dev-lang/python:     2.4.3-r1
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache:     [Not Present]
dev-util/confcache:  [Not Present]
sys-apps/sandbox:    1.2.18.1
sys-devel/autoconf:  2.13, 2.59-r7
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2
sys-devel/binutils:  2.16.1-r2
sys-devel/gcc-config: 2.0.0_rc1
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.11-r5
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/eselect/compiler /etc/gconf /etc/revdep-rebuild /etc/terminfo"
CXXFLAGS="-O2"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks maketest metadata-transfer sandbox sfperms strict userpriv usersandbox"
GENTOO_MIRRORS="ftp://ftp.ussg.iu.edu/pub/linux/gentoo http://gentoo.osuosl.org http://distfiles.gentoo.org http://www.ibiblio.org/pub/Linux/distributions/gentoo"
MAKEOPTS="-j1 -l1"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage"
USE="x86 X acpi alsa apache2 apm arts avi bash-completion bcmath berkdb bitmap-fonts bzlib cdparanoia cdr cli crypt cups dri eds emacs emacs-w3 emboss encode examples fastcgi fbcon flac foomaticdb fortran gdbm gif glut gpm gstreamer gtk gtk2 imagemagick imlib ipv6 isdnlog jpeg kde lcms libg++ libwww lm_sensors lmsensors mad matrox mikmod mp3 mpeg ncurses nls nocd nptl nptlonly offensive ogg opengl oss pam pcre pdflib perl php png posix postgres pppd python qt quicktime readline reflection sdl session spell spl ssl sysvipc tcltk tcpd tidy truetype truetype-fonts type1-fonts udev usb vorbis wddx x-face xaw8 xml xmms xorg xv yahoo zlib elibc_glibc kernel_linux userland_GNU"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTAGE_RSYNC_EXTRA_OPTS

bc -l will truncate certain math values to an integer result. It didn't used to do that.

1.0/2.0 gives 0
3.0/2.0 gives 1

This is wrong (it would be right for bc without the -l).
It used to give 0.5 and 1.5 respectively.

[Comment 1 hiyuh 2006-06-14 21:54:27 UTC]

Maybe, it's dup of bug #136643, IMHO.
And then, it has a work-around way.

[Comment 2 SpanKY 2006-06-15 00:58:18 UTC]

*** This bug has been marked as a duplicate of 136643 ***