| Name : perl-Test-Number-Delta
| |
| Version : 1.060000
| Vendor : obs://build_opensuse_org/devel:languages:perl
|
| Release : lp154.1.1
| Date : 2023-01-27 16:50:35
|
| Group : Development/Libraries/Perl
| Source RPM : perl-Test-Number-Delta-1.060000-lp154.1.1.src.rpm
|
| Size : 0.05 MB
| |
| Packager : https://www_suse_com/
| |
| Summary : Compare the difference between numbers against a given tolerance
|
Description :
At some point or another, most programmers find they need to compare
floating-point numbers for equality. The typical idiom is to test if the
absolute value of the difference of the numbers is within a desired
tolerance, usually called epsilon. This module provides such a function for
use with Test::More. Usage is similar to other test functions described in
Test::More. Semantically, the \'delta_within\' function replaces this kind of
construct:
ok ( abs($p - $q) < $epsilon, \'$p is equal to $q\' ) or
diag \"$p is not equal to $q to within $epsilon\";
While there\'s nothing wrong with that construct, it\'s painful to type it
repeatedly in a test script. This module does the same thing with a single
function call. The \'delta_ok\' function is similar, but either uses a global
default value for epsilon or else calculates a \'relative\' epsilon on the
fly so that epsilon is scaled automatically to the size of the arguments to
\'delta_ok\'. Both functions are exported automatically.
Because checking floating-point equality is not always reliable, it is not
possible to check the \'equal to\' boundary of \'less than or equal to
epsilon\'. Therefore, Test::Number::Delta only compares if the absolute
value of the difference is *less than* epsilon (for equality tests) or
*greater than* epsilon (for inequality tests).
|
RPM found in directory: /packages/linux-pbone/ftp5.gwdg.de/pub/opensuse/repositories/devel:/languages:/perl:/CPAN-T/15.4/noarch |
