And
│
Deutsch (de) │
English (en) │
español (es) │
suomi (fi) │
français (fr) │
русский (ru) │
The binary operator and
performs a logical conjunction.
FPC also does a bitwise and
when supplied with ordinal types.
Boolean operation
The operator and
accepts to two Boolean type values.
It is the logical conjunction written in classic logic as [math]A \land B[/math].
Electrical engineers may write [math]A \times B[/math] or [math]A \cdot B[/math], or eliminating the multiplication sign altogether writing [math]AB[/math].
However, the asterisk has a different meaning in programming.
The Boolean and
evaluates to true
if and only if both operands are true
.
A

B

A or B


false

false

false

false

true

false

true

false

false

true

true

true

Bitwise operation
FPC also defines a bitwise and
.
Taking two ordinal operands logical and
is calculated bit by bit:
1010'1100 and 0011'0100 ―――――――――――― 0010'0100
comparative remarks
Depending on the compiler's specific implementation of the data type set
, the intersection of sets virtually does the same as the bitwise and
.