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5.1.121 random
Syntax:
random ( int_expression, int_expression )
Type:
- int
Purpose:
- returns a random integer between the integer given by the first
int_expression and the one given by the second int_expression.
Syntax:
random ( int_expression, int_expression, int_expression )
Type:
- intmat
Purpose:
- returns a random intmat where the size is given by the second (number of
rows) and third argument (number of columns). The absolute value of the
entries of the matrix is smaller than or equal to the integer given as
the first argument.
Note:
- The random generator can be set to a startvalue with
the function
system, resp. by a command line option.
The current value of the random generator is system("random").
Internally a random generator with values in 1 to 2^31 - 2
and a full period is used, max-min may not be larger than 2^31-2.
Example:
| | random(1,1000);
==> 35
random(1,2,3);
==> 0,0,0,
==> 1,1,-1
system("random",210); // start random generator with 210
random(-1000,1000);
==> 707
random(-1000,1000);
==> 284
system("random",210);
random(-1000,1000); // the same random values again
==> 707
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See
Command line options;
int;
intmat;
system.
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