Flexscript Coding IF Not Working

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Ranggi M asked Jun 18, '21 Eric M commented Jun 23, '21

Flexscript Coding IF Not Working

Hi, good day

I am using this code with IF but its not working properly,

I count some cummulative value and if it is still <= 1 then, it should be able to pas through an IF. But, when the value is exactly 1 it is not pass through the IF but to the else instead.

Here I attach an example of the coding I used.

The value of variable "Cek" should be 0 until all the looping. But it changes to 1 instead.

Cek Flexcript Coding.fsm

EDITED :

Sorry guys, I made the file example is wrong, the value of kumulatif should be += 1/36 and not "nilai"

Here I attached the correct file again :
cek-flexcript-coding 2.fsm

Software Version:

FlexSim 19.2.4

flexsim 19.2.4 coding

cek-flexcript-coding.fsm (23.6 KiB)

cek-flexcript-coding-2.fsm (25.0 KiB)

· 1

Eric M commented · Jun 23, 2021 at 02:30 PM

Hi @Ranggi M, was Allister Wilson's or David Chan's answer helpful? If so, please click the red "Accept" button at the bottom of one of their answers. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always unaccept and comment back to reopen your question.

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Answer 1 · 2021-06-18T05:23:45Z

Allister Wilson answered Jun 18, '21 Ranggi M commented Jun 18, '21

Your code seems to be working fine.

In every iteration where kumulatif is less than or equal to 1, the if branch executes :

Once kumulatif goes above 1, the else branch executes :

The final value of kumulatif is 18.5, which is greater than 1, so cek is 1 :

breakpoint-if.png (6.6 KiB)

breakpoint-else.png (9.7 KiB)

breakpoint-end.png (6.7 KiB)

· 3

Ranggi M commented · Jun 18, 2021 at 06:12 AM

Hello, so sorry I made a mistake in the example file, please find the correct one in the second file. the value of kumulatif become 1.00000 and it goes to "ELSE" and nott "IF"

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Allister Wilson Ranggi M commented · Jun 18, 2021 at 06:27 AM

This is a floating-point precision issue (not specific to FlexSim), see this answer for more information and ways to avoid it : Incorrect calculation values - FlexSim Community

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Ranggi M Allister Wilson commented · Jun 18, 2021 at 07:15 AM

I see, but In the output windows, the precision unit of the variable kumulatif is 1.00000000 is not it the same as 1 or the output windows is not showing all the decimal precision in Flexsim ? because I tried to changes the if criteria 1 to 1.00000000 and it is still not working.

But anyways, in the end I am changing the IF criteria to " kumulatif <= 1.000000000001" It solve this one example.

Thank you

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Answer 2 · 2021-06-18T05:07:16Z

David Chan answered Jun 18, '21 Ranggi M edited Jun 18, '21

@Ranggi M You might want to check your calculation. The first value is for kumulatif and second value is cek. after a few loop, kumulatif is more than 1.

· 1

Ranggi M commented · Jun 18, 2021 at 06:12 AM

Hello, so sorry I made a mistake in the example file, please find the correct one in the second file. the value of kumulatif become 1.00000 and it goes to "ELSE" and nott "IF"

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