Numeric (Real) Expressions

In expressions, integers are treated as reals; they are fully interchangeable. Numeric expressions can contain:

• Numbers, for example, 32, 10.1, and so on.

• Numbers can be given as as integer exponents, for example: 10 exp 5, and 5 E 6.

• Numbers be qualified by unit names.

• Attributes of type number, for example: XLEN.

• Position, direction and orientation attributes which have a subscript to indicate which part of the array is required. For example, POS[2] means the second element of the POSITION attribute; that is, the northing. Note that position, direction and orientation attributes without subscripts can only be used in number array expressions.

• The keyword PI (3.142).

• Numeric operators.

• Numeric functions.