Acrobat Pro 6 Average Daily Production and Math.round problem

Question

Acrobat Pro 6 Average Daily Production and Math.round problem
(Production.0) (154) (whole units) . (Production.1) (90) (fractional) / (divided by) 31 (days) results in (Average.0) (4)(whole units) . (Average.1) (10) (fractional) using :Math.round.� Noticed that 154 (whole units) . 85 through 99 (fractional) also show 4.10. (without Math.round : 5.00)
Method:
�Production.0� (whole units) . �Production .1� (fractional) / Days = (Average Daily Production) (�Average.0� (whole units) . (Average.1) (fractional)
� Production.0 (value not calculated)�, � Production 1 (calculated) (event.value = util.printx("0099", (event.value)).substr(-2,2); � �Average.0 (value not calculate)�, and �Average.1 has following calculation:
var punits = this.getField("Production.0");
var pfrac = this.getField("Production.1");
var average = 0.0;
average = (punits.value + pfrac.value / 100) / this.getField("Days").value;
this.getField("Average.0").value = average - average % 1;
this.getField("Average.1").value = util.printx("0099", Math.round((average % 1 * 100))).substr(-2,2);
�Math.round� appears to be a problem. Also, could you explain the purpose of �0099� . Anyway, why would 154.85 through 154.90 divided by 31 give 4,10. Also, their must be a better way, to find the average daily production. All you have to do is divided the production (whole. fractional) by the days, and display the average daily production as (whole. fractional). Any suggestions??

Answer 1

There are a many loose ends in your question.
First, I have never seen before a variable type called 'var'. Is it a java primitive or a class?
Next, I cannot seem to find any class that has the printx method.
When it comes to substr(-2,2), I get confused. First, I thought that it was a method of the String class, but I only got as far as substring(beginIndex, endIndex).
If you really must break the production and average into pieces, try this:
float average = (punits + pfrac/100) / days;
int avg_units = (int)average;
int avg_frac = (int)( (average - avg_units) * 100 );My guess is that util.printx("0099", x) formats x having two optional digits and two mandatory digits, showing 0-99 as 00-99, but allows to show numbers with three and four digits.
154.85/31 = 4,9951612903225806451612903225806
154.99/31= 4,9996774193548387096774193548387
If you round the fraction of theese numbers multiplied by 100 ( = 99.51.. and 99.968...) you get 100, and this will be the output of printx. My guess for "4.10" is that substr(-2,2) returns the two first characters of the string, because the start index should not be zero. (According to java docs, substring throws an exception on a negative index, so what kind of class are you really using ??????)