xsd:double

The type xsd:double represents an IEEE double-precision 64-bit floating-point number. The format of xsd:double values is a mantissa (a number which conforms to the type decimal) followed, optionally, by the character "E" or "e" followed by an exponent. The exponent must be an integer. For example, 3E2 represents 3 times 10 to the 2nd power, or 300. The exponent must be an integer.

In addition, the following values are valid: INF (infinity), -INF (negative infinity), and NaN (Not a Number). INF is considered to be greater than all other values, while -INF is less than all other values. The value NaN cannot be compared to any other values, although it equals itself.

Simple Type Information

Namespace: http://www.w3.org/2001/XMLSchema

Schema Document: datatypes.xsd

Content

Based on xsd:anySimpleType
White Space: collapse

Examples

Valid values	Comment
`-3E2`
`4268.22752E11`
`+24.3e-3`
`12`
`+3.5`	any value valid for decimal is also valid for `xsd:double`
`-INF`	negative infinity
`-0`	0
`NaN`	Not a Number
Invalid values	Comment
`-3E2.4`	the exponent must be an integer
`12E`	an exponent must be specified if "`E`" is present
`NAN`	values are case-sensitive, must be capitalized correctly
	an empty value is not valid, unless `xsi:nil` is used

Type Inheritance Chain

xsd:anySimpleType
- restricted by xsd:double