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author | Marti Bolivar <mbolivar@mit.edu> | 2010-10-20 06:46:52 -0400 |
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committer | Marti Bolivar <mbolivar@mit.edu> | 2010-10-20 06:46:52 -0400 |
commit | 22ff1db8a76c7047b61a424ae1fa5f43697fcb34 (patch) | |
tree | bf722c8a5a6bd40e0b33fc4a425e0e5b8b9f4216 /docs/source/arduino/abs.rst | |
parent | bac6548fe90b0721e191d68df2677beb4b15f60a (diff) | |
download | librambutan-22ff1db8a76c7047b61a424ae1fa5f43697fcb34.tar.gz librambutan-22ff1db8a76c7047b61a424ae1fa5f43697fcb34.zip |
initial check-in of arduino docs in RST format (converted using wget+pandoc)
Diffstat (limited to 'docs/source/arduino/abs.rst')
-rw-r--r-- | docs/source/arduino/abs.rst | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/docs/source/arduino/abs.rst b/docs/source/arduino/abs.rst new file mode 100644 index 0000000..5d699ae --- /dev/null +++ b/docs/source/arduino/abs.rst @@ -0,0 +1,33 @@ +.. _arduino-abs: + +abs(x) +====== + +Description +----------- + +(Macro) 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 ``abs()`` is implemented, avoid using other +functions or causing side effects inside the brackets, as 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 |