Package: perl-doc Version: 5.18.1-4 Severity: normal [Reported in perl-doc, but there could also be bugs in perl itself.]
The semantics of numbers and numeric operations seems to be specified in the perlnumber(1) man page, but various operations are not specified at all and seem to be inconsistent, maybe buggy. For instance, $ perl -e 'printf "%f\n", 0./0.' Illegal division by zero at -e line 1. $ perl -e 'printf "%f\n", 1./0.' Illegal division by zero at -e line 1. Why an error and not NaN (resp. Inf), as per IEEE 754 rules? Note that Perl seems to have Inf and NaN support, hence the above question: $ perl -e 'printf "%f\n", exp(1000)' inf $ perl -e 'printf "%f\n", exp(1000)-exp(1000)' -nan Why does one get the following? $ perl -e 'printf "%f\n", "0x12"' 0.000000 0x12, if not interpreted as a hex number, should probably regarded as an invalid numeric value, thus it should give NaN or an error (like the operation 0./0.). FYI: $ /usr/bin/printf "%f\n" 0x12 18.000000 -- System Information: Debian Release: jessie/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.10-3-amd64 (SMP w/2 CPU cores) Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages perl-doc depends on: ii perl 5.18.1-4 perl-doc recommends no packages. Versions of packages perl-doc suggests: ii groff 1.22.2-3 ii man-db [man-browser] 2.6.5-2 -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
