regex - Matching floating point numbers >= 100 -

i'm reading file line line , want lines starting rather ab , containing (at least) 3 digit floating point number followed percentage sign (i.e. floating point number% greater or equal 100%).

for instance:

aa whatevs 102.342% dontcare #match ab whatevs 102.342% dontcare #mismatch ac whatevs 12.3042% dontcare #mismatch * ad whatevs 102% dontcare #match * ae whatevs 2002.3042% dontcare #match af whatevs 22.3021% dontcare #mismatch ag whatevs 102.342 12.342% dontcare #mismatch ** 

i have following regex solution far, not capture ad whatevs 102% dontcare obvious reason.

/^(?!ab).*\d{3}\.\d*%/ 

/^(?!ab).*\d{3}\.?\d*%/ not work either, since matches af whatevs 22.3021% dontcare.

i know can splitting regex 2 sub regex based on existence of .. however, i'd see if there single regex solution.

as you've noticed, there lot of different ways represent floating point numbers. can use regexp::common::number handle them instead of rolling own regex:

use strict; use warnings;  use regexp::common qw(number);  while (<data>) {     next if /^ab/;      print if /\b$re{num}{real}{-keep}%/ , $1 >= 100; }  __data__ aa whatevs 102.342% dontcare #match ab whatevs 102.342% dontcare #mismatch ac whatevs 12.3042% dontcare #mismatch * ad whatevs 102% dontcare #match * ae whatevs 2002.3042% dontcare #match af whatevs 22.3021% dontcare #mismatch ag whatevs 102.342 12.342% dontcare #mismatch ** ah whatevs 1.02342e02% dontcare #match ai whatevs -102% dontcare #mismatch 

output:

aa whatevs 102.342% dontcare #match ad whatevs 102% dontcare #match * ae whatevs 2002.3042% dontcare #match ah whatevs 1.02342e02% dontcare #match 

i've added negative number , exponent data set demonstrate convenience of using regexp::common. whether data set includes such values or not, don't have tweak regex.

also note it's easier compare numbers when treat them numbers, not series of characters. -100 three-digit number, it's not >= 100.