Construct a float value from an item value.

Related Syntax Constructs

The following construct(s) refer to this construct:

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Syntax

xs:float(item $value) => float

Description

This is a constructor function that takes an item value as argument and returns a value of type xs:float. If the argument is a literal, then the literal must be a valid lexical form of its type.

As specified in the respective section of the W3C recommendation XML Schema Part 2: Datatypes, a value of type xs:float represents a single-precision floating point number according to IEEE 754-1985. The lexical form uses scientific notation, consisting of the mantissa which must be a decimal number, the letter "E" or "e", and an exponent which must be an integer value.

Argument

$value	item value

Example

• Generate a valid value of type xs:float:

  xs:float("002002.270")

  This number is represented as 2.00227E3.