Double

Overview

Data type

A double-precision 64-bit floating point number. The value space of Double is the same as that of the XML Schema data type double as specified by the W3C Recommendation XML Schema Part 2: Datatypes Second Edition from October 28, 2004, with the exception that the special values positive infinity (INF), negative infinity (-INF), and not-a-number (NaN) are excluded from the value space of Double.

Implementation in Proteus Schema

A Double is implemented as a literal for the XML Schema data type double.

The way this literal is used in a Proteus XML document depends on the Proteus Schema implementations of the data attributes with type Double.

• Double is the type of the Value attributes of the physical quantity types and physical quantity application types in the PhysicalQuantities package. For example, see the Proteus Schema implementations of Area::Value and ElectricalFrequency::Value.

• Double is the type of several data attributes of classes and data types in the Graphics package. See the Proteus Schema implementations of these attributes:

  • Circle::Radius

  • CircleArc::EndAngle

  • CircleArc::Radius

  • CircleArc::StartAngle

  • Ellipse::HorizontalSemiAxis

  • Ellipse::Rotation

  • Ellipse::VerticalSemiAxis

  • EllipseArc::EndAngle

  • EllipseArc::HorizontalSemiAxis

  • EllipseArc::Rotation

  • EllipseArc::StartAngle

  • EllipseArc::VerticalSemiAxis

  • Point::X

  • Point::Y

  • Stroke::Color

  • Stroke::Width