Editing Decimal separator (section)

=== Radix point ===
In mathematics and [[computing]], a '''radix point''' or '''radix character''' is a symbol used in the display of numbers to separate the [[integer]] part of the value from its [[fractional part]]. In English and many other languages (including many that are written right-to-left), the integer part is at the left of the radix point, and the fraction part at the right of it.<ref>{{cite book |last1=Van Verth |first1=James M. |last2=Bishop |first2=Lars M. |year=2008 |title=Essential Mathematics for Games and Interactive Applications: A programmers' guide |edition=2nd |place=Boca Raton, Florida |publisher=CRC Press |page=7 |isbn=9780123742971 |url=https://books.google.com/books?id=zkEY9RIm4WkC&pg=PA7}}</ref>

A radix point is most often used in [[decimal]] (base 10) notation, when it is more commonly called the ''decimal point'' (with [[wiktionary:deci-|deci-]] indicating [[base&nbsp;10]]). In [[List of countries where English is an official language|English-speaking countries]], the decimal point is usually a small dot (.) placed either on the baseline, or halfway between the baseline and the top of the [[Numerical digit|digits]] ('''·''')<ref name=oracle>{{cite report |title=International Language Environments Guide |url=https://docs.oracle.com/cd/E19455-01/806-0169/overview-9/index.html |archive-url=https://web.archive.org/web/20120115042427/https://docs.oracle.com/cd/E19455-01/806-0169/overview-9/index.html|archive-date=2012-01-15 |access-date=2018-12-19 |website=[[Oracle Corporation|Oracle Corporation Docs]] |df=dmy-all}}</ref>{{efn|name=oracle_quote|Great Britain and the United States are two of the few places in the world that use a period to indicate the decimal place. Many other countries use a comma instead. The decimal separator is also called the ''radix'' character. Likewise, while the U.K. and U.S. use a comma to separate groups of thousands, many other countries use a period instead...<ref name=oracle/>}}
In many other countries, the radix point is a comma (,) placed on the baseline.<ref name=oracle/>{{efn|name=oracle_quote}}

These conventions are generally used both in machine displays ([[printing]], [[computer monitor]]s) and in [[handwriting]]. It is important to know which notation is being used when working in different software programs. The respective [[ISO 31-0#Numbers|ISO 31-0 standard]] defines both the comma and the small dot as decimal markers, but does not explicitly define universal radix marks for bases other than 10.

Fractional numbers are rarely displayed in other [[Radix|number bases]], but, when they are, a radix character may be used for the same purpose. When used with the [[Binary number|binary]] (base&nbsp;2) representation, it may be called "binary point".