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Go Standard Library Cookbook

You're reading from   Go Standard Library Cookbook Over 120 specific ways to make full use of the standard library components in Golang

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Product type Paperback
Published in Feb 2018
Publisher Packt
ISBN-13 9781788475273
Length 340 pages
Edition 1st Edition
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Author (1):
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Radomír Sohlich Radomír Sohlich
Author Profile Icon Radomír Sohlich
Radomír Sohlich
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Toc

Table of Contents (13) Chapters Close

Preface 1. Interacting with the Environment FREE CHAPTER 2. Strings and Things 3. Dealing with Numbers 4. Once Upon a Time 5. In and Out 6. Discovering the Filesystem 7. Connecting the Network 8. Working with Databases 9. Come to the Server Side 10. Fun with Concurrency 11. Tips and Tricks 12. Other Books You May Enjoy

Comparing floating-point numbers

Because of how floating-point numbers are represented, there can be inconsistencies while comparing two numbers that appear to be identical. Unlike integers, IEEE floating-point numbers are only approximated. The need to convert the numbers to a form the computer can store in binary leads to minor precision or round-off deviations. For example, a value of 1.3 could be represented as 1.29999999999. The comparison could be done with some tolerance. To compare numbers with arbitrary precision, the big package is here.

How to do it...

  1. Open the console and create the folder chapter03/recipe02.
  2. Navigate to the directory.
  3. Create the tolerance.go file with the following content:
        package main...
lock icon The rest of the chapter is locked
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