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arduino:math:abs

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.

abs(a++);   // avoid this - yields incorrect results
 
a++;          // use this instead -
abs(a);       // keep other math outside the function

Source: arduino.cc

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arduino/math/abs.txt · Last modified: 2013/02/15 20:45 (external edit)

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