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Annotation of loncom/homework/templates/CustomResponse.problem, revision 1.4

1.1       www         1: <problem>
1.3       bisitz      2: 
                      3: <startouttext />
                      4: Accept an answer of around 90 or -90
                      5: <endouttext />
                      6: 
                      7: <customresponse answerdisplay="something near 90 or -90">
1.1       www         8:     <answer type="loncapa/perl">
                      9: # We do not want a vector
1.2       albertel   10: if ($submission=~/\,/) { return 'EXTRA_ANSWER'; }
1.1       www        11: # No units needed
                     12: if ($submission=~/^\d+\s+\w+$/) { return 'UNIT_NOTNEEDED'; }
                     13: # Need a numerical answer here
1.4     ! www        14: if ($submission!~/^[\d\.\-]+$/) { return 'WANTED_NUMERIC'; }
1.1       www        15: $difference=abs(90-abs($submission));
                     16: if ($difference==0) { return 'EXACT_ANS'; }
                     17: if ($difference < 0.001) { return 'APPROX_ANS'; }
                     18: return 'INCORRECT';
                     19:     </answer>
                     20:     <textline />
1.3       bisitz     21: </customresponse>
                     22: 
1.1       www        23: </problem>