Mikroelektronika MIKROE-724 データシート

mikroBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

219

Use relational operators to test equality or inequality of expressions. All relational operators return TRUE or FALSE.

All relational operators associate from left to right.

Relational Operators Overview

=

equal

<>

not equal

>

greater than

<

less than

>=

greater than or equal

<=

less than or equal

Relational Operators in Expressions

The equal sign (

=

) can also be an assignment operator, depending on context.

Precedence of arithmetic and relational operators was designated in such a way to allow complex expressions with-

out parentheses to have expected meaning:

 if aa + 5 >= bb - 1.0 / cc then   ‘ same as: if (aa + 5) >= (bb - (1.0 / cc)) then

   dd = My_Function()
 end if

Use bitwise operators to modify individual bits of numerical operands.

Bitwise operators associate from left to right. The only exception is the bitwise complement operator 

not 

which as-

sociates from right to left.

Bitwise Operators Overview

and

bitwise AND; compares pairs of bits and returns 1 if both bits are 1, otherwise it returns 0

or

bitwise (inclusive) OR; compares pairs of bits and generates a 1 result if either or both bits are 1, otherwise it returns 0

xor

bitwise exclusive OR (XOR); compares pairs of bits and generates a 1 result if the bits are complementary, otherwise 

it returns 0

not

bitwise complement (unary); inverts each bit

<<

bitwise shift left; moves the bits to the left, discards the far left bit and assigns 0 to the right most bit.

>>

bitwise shift right; moves the bits to the right, discards the far right bit and if unsigned assigns 0 to the left most bit, 

otherwise sign extends