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Add note about max parameter to random() reference page #81

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Mar 29, 2021
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Add note about max parameter to random() reference page #81

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2 changes: 2 additions & 0 deletions Language/Functions/Random Numbers/random.adoc
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Expand Up @@ -85,6 +85,8 @@ void loop() {
If it is important for a sequence of values generated by `random()` to differ, on subsequent executions of a sketch, use `randomSeed()` to initialize the random number generator with a fairly random input, such as `analogRead()` on an unconnected pin.

Conversely, it can occasionally be useful to use pseudo-random sequences that repeat exactly. This can be accomplished by calling `randomSeed()` with a fixed number, before starting the random sequence.

The `max` parameter should be chosen according to the data type of the variable in which the value is stored. In any case, the absolute maximum is bound to the `long` nature of the value generated (32 bit - 2,147,483,647). Setting `max` to a higher value won't generate an error during compilation, but during sketch execution the numbers generated will not be as expected.
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[float]
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