Value comparison operators

• Compare single values and sequences of single or no values:

  • eq

  • ne

  • lt

  • le

  • gt

  • ge

• These operators return either true, false, the empty sequence, an error, or a type exception.

• Types must be comparable (No automatic conversion from strings as in XPath 1.0!):

  1. Subtype substitution: A derived type may substitute for its base type. In particular, integer may be used where decimal is expected.

  2. Type promotion: decimal may be promoted to float, and float may be promoted to double.