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Asked: 2021-12-12T04:14:44+00:00 In:

Solved Is It Possible To Use Decimal Calculations In Cmd?

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hay my friends. 😉

i am just woundering, can anyone tell me is there a way to use decimal calculations in cmd (batch scripts) language?

i am writing my own program in cmd programming language, and i want to do a percent calculations (for progress bar). but cmd allways as a resoult of dividing returns full number. and i need a decimal number to be able to calculate percentage.

is there any dos utility which can be used as a patch for ms-dos 8 (windows xp cmd.exe over ntvdm.exe (or even better 32 bit dos utility without ntvdm.exe)) which can do decimal calculations?
if there is, i will install it in dos, and use it in cmd as a new command.
because cmd does not support calculations with decimal numbers (just full numbers).

thank you.

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    1. Best Answer
      You already have one, if you have vbscript, using the EVAL function. Or, alternatively, you can just muliply the numerator by 100 before the division to get a whole number, f/e:
      :: this is your raw numerator (number that have been processed, of files, sectors, etc)
      set b=12
      :: this is the denominator (total number of files, or sectors, or whatever)
      set c=32
      :: now multiply the numerator before doing the math:
      set /a b*=100
      :: now do the math
      set /a perc=b/c

      but of course you can combine the math:
      set /a perc=b*100/c

      And if you want to use vbscript, here’s a front-end:
      http://www.computing.net/howtos/sho…

      Or just write your own for your specific needs.

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