Numeric expressions

Quick examples:

25.0 + -2.0 * 3.14159

toInt(100.0 / toFloat(3))

Integer literals like 5 will parse as type Integer, and are not implicitly promoted to Float, if present where a Float is expected. Floating point literals must have a dot, like 5.0.

The basic arithmetic operations on Integers and Floats are:

expression + expression
expression - expression
- expression
expression * expression
expression / expression

Multiply and divide will bind more tightly than addition and subtraction, as you would expect from the standard order of operations.

The operands to each must have the same type. There is no implicit promotion of Integer to Float or vice versa. The operators will result in the same type as its inputs. Division of two integers will result in an integer, with the remainder truncated (as is normal in, for example, C.)

Example: The following code:

5 / 2

is an integer division, and will evaluate to the Integer 2. Whereas:

5.0 / 2.0

is a floating point division, and will evaluate to the Float 2.5.