|  |  5.1.126 random 
See
 Command line options;
 int;
 intmat;
 system.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 issystem("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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