ABL electronic PIC12 Benutzerhandbuch

Use relational operators to test equality or inequality of expressions. If the expres-
sion evaluates to true, it returns 1; otherwise it returns 0.

All relational operators associate from left to right.

Precedence of arithmetic and relational operators was designated in such a way to
allow complex expressions without parentheses to have expected meaning:

a + 5 >= c - 1.0 / e   

// i.e. (a + 5) >= (c - (1.0 / e))

Always bear in mind that relational operators return either 0 or 1. Consider the fol-
lowing examples:

8 == 13 > 5

// returns 0: 8==(13>5), 8==1, 0

14 > 5 < 3

// returns 1: (14>5)<3, 1<3, 1

a < b < 5

// returns 1: (a<b)<5, (0 or 1)<5, 1

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==

equal

9

!=

not equal

9

>

greater than

10

<

less than

10

>=

greater than or equal

10

<=

less than or equal

10