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diff --git a/source/arduino/modulo.rst b/source/arduino/modulo.rst deleted file mode 100644 index bb65600..0000000 --- a/source/arduino/modulo.rst +++ /dev/null @@ -1,77 +0,0 @@ -.. highlight:: cpp - -.. _arduino-modulo: - -% (modulo) -========== - -Description ------------ - -Calculates the `remainder <http://en.wikipedia.org/wiki/Remainder>`_ -when one integer is divided by another. It is useful for keeping a -variable within a particular range (e.g. the size of an array). - -Syntax ------- - -:: - - result = dividend % divisor - - - -Parameters ----------- - -**dividend**: the number to be divided - -**divisor**: the number to divide by - -Returns -------- - -The remainder of **dividend**\ /\ **divisor**\ . - -Examples --------- - -:: - - int x; - x = 7 % 5; // x now contains 2 - x = 9 % 5; // x now contains 4 - x = 5 % 5; // x now contains 0 - x = 4 % 5; // x now contains 4 - -:: - - /* update one value in an array each time through a loop */ - - int values[10]; - int i = 0; - - void setup() { - // no setup necessary - } - - void loop() { - values[i] = analogRead(0); - i = (i + 1) % 10; // modulo operator makes sure i stays between 0 and 9 - } - -Tip ---- - -The modulo operator does not work on floats. For that, you can use -the C standard library function `fmod() -<http://sourceware.org/newlib/libm.html#fmod>`_. - - -See Also --------- - -- :ref:`Arithmetic <arduino-arithmetic>` - - -.. include:: cc-attribution.txt
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