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# 4GuysFromRolla.com : ASP FAQS : Math Functions

Question:

## Q: How can I round or slide a number to the nearest integer multiple of my choice? (For example rounding 13.3, 22.75 and 6 to the nearest 5 = 15, 25, 5 respectively)

[Print this FAQ]

Answer: This type of function is used when you have certain incremental values that you want to move real-world values into. It's often referred to as a snap-to or quantize function. In both implementations below, intNum is the number you're testing and intRn is the number that you want to move intNum to the nearest multiple of.

In VBScript:

 `<%Function RoundTo(intNum, intRn)    RoundTo= Int((intNum / intRn)+.5) * intRnEnd Function%>`

In JScript:

 ``

Useage:

 `<%    Response.Write RoundTo(12.4, 5) ' Writes 10    Response.Write RoundTo(12.5, 5) ' Writes 15' Negative numbers behave slightly differently:    Response.Write RoundTo(-12.5, 5) ' Writes -10    Response.Write RoundTo(-12.51, 5) ' Writes -15%>`

FAQ posted by Richard Lowe at 11/21/2000 1:17:45 PM to the Math Functions category. This FAQ has been viewed 53,456 times.

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