Div
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div
is division in which the fractional part (remainder) is discarded.
The expression a div b
returns the integer part of the result of dividing two integers.
This is in contrast to the expression a / b
which returns a real
result.
Both sides of an expression using div
must be one of the integer types. Using a real
operand with div
will result in a compile-time error:
Error: Operator is not overloaded: […]
To get an integer result with a real
operand, use trunc
or round
with the /
operator.
To demonstrate what div
does, consider the following example:
1program divDemo(input, output, stderr);
2
3var
4 i: shortInt;
5 j: shortInt;
6 q: qWord;
7 r: qWord;
8
9begin
10 i := 16;
11 j := 3;
12 q := 1000;
13 r := 300;
14
15 writeLn(i div j);
16 writeLn(i / j);
17 writeLn(q div r);
18 writeLn(q / r);
19end.
outputs:
$ ./divDemo
5
5.3333333333333330E+000
3
3.3333333333333335E+000
See also
mod
– remainder of integer divisiontrunc
– retrieve integer part of real numbersround
– round to integermath.divmod
– retrieve both quotient and remainder