Compare Floating Point Values Using the Round Function

When you have to compare the results of floating point expressions, you can’t rely on the “=” operator due to the finite precision of Single or Double variables. To see this concept demonstrated, use this code:

 Dim i As Integer, d As DoubleFor i = 1 To 10	d = d + CDbl(0.1)NextMsgBox (d = 1)	' displays "False"

To more easily compare two floating numbers, use the new VB6 Round function, which rounds a number to the desired number of decimal digits. For example, you can rewrite the previous test like this:

 ' the difference is less than 1E-12MsgBox (Round(d, 12) = 1)  ' displays "True"

You can also use this method to check whether A and B variables contain values that match up to their 12th decimal digit:

 If Round(A - B, 12) = 0 Then Print "Equal"
Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

Top 5 B2B SaaS Marketing Agencies for 2023

In recent years, the software-as-a-service (SaaS) sector has experienced exponential growth as more and more companies choose cloud-based solutions. Any SaaS company hoping to stay ahead of the curve in this quickly changing industry needs to invest in effective marketing. So selecting the best marketing agency can mean the difference

technology leadership

Why the World Needs More Technology Leadership

As a fact, technology has touched every single aspect of our lives. And there are some technology giants in today’s world which have been frequently opined to have a strong influence on recent overall technological influence. Moreover, those tech giants have popular technology leaders leading the companies toward achieving greatness.

iOS app development

The Future of iOS App Development: Trends to Watch

When it launched in 2008, the Apple App Store only had 500 apps available. By the first quarter of 2022, the store had about 2.18 million iOS-exclusive apps. Average monthly app releases for the platform reached 34,000 in the first half of 2022, indicating rapid growth in iOS app development.