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arduino:math:abs [2013/02/15 20:45] (current)
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 +======abs(x)   ======
 +
 +====Description   ====
 +
 +Computes the absolute value of a number.
 +
 +====Parameters   ====
 +
 +x: the number
 +
 +====Returns   ====
 +
 +**x**: if **x** is greater than or equal to 0.
 +
 +**-x**: if **x** is less than 0.
 +
 +
 +====Warning   ====
 +Because of the way the abs() function is implemented, avoid using other functions inside the brackets, it may lead to incorrect results.
 +
 +<code arduino>
 +abs(a++);   // avoid this - yields incorrect results
 +
 +a++;          // use this instead -
 +abs(a);       // keep other math outside the function
 +</code>
 +
 +
 +
 +
 +Source: arduino.cc
  
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arduino/math/abs.txt · Last modified: 2013/02/15 20:45 (external edit)

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