real

comment

A 32-bit IEEE-754 float type.

note

The equality == and inequality != operators are different for type real.

0.0 == 0.0009 is true, effectively the precision is set to 0.001 (epsilon) in the Jass VM. As a result, 0.0 == 0.001 is false.

However, the != operator does not have its accuracy limited, so 0.0 != 0.0009 will return true too. The inequality operator can be used to compare reals of arbitrary precision (as long they are actually different in binary).

note

In-depth analysis of floating-point behavior of real in Jass: real Talk - Floats in Warcraft 3.

note

(2014) Typecast exploit conversion between real and integer: 100% accurate and pretty fast realToIndex and back.

Source

builtin-types.j

Source code

type real extends void