A small object which generates a random number.
$rand_num_generator = new PGrandom($initial_seed);
# creates generator with a fixed initial seed
$a = $rand_num_generator->random(-10,10,0.1);
# generates random number between -10 and 10 in 0.1 increments.
| seed||Last internal random number generated. || |
random($initial, $final, $increment)
|Generates a random number between the initial and final values in steps of increment. If the increment is 0 or less, then |
random chooses a floating point number between
$final using a small increment.
$increment defaults to 1, if it is not supplied as an argument.
|Behaves like perl's |
rand. Generates a random number between 0 and
$final defaults to 1 if that argument is omitted.
|Resets the seed for this random number generator object. || |
Using independent random number generators
in a complicated problem or macro promotes compartmentalization and
robustness. If all macros were to use a common random number generator,
then a change in the number of calls to the random number generator in
one macro would affect the results in another macro, causing confusion
and a difficult debugging process.
random() itself is defined using a random number generator object which is stored in the global variable
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