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author | Perry Hung <iperry@gmail.com> | 2011-01-24 23:23:29 -0500 |
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committer | Perry Hung <iperry@gmail.com> | 2011-01-24 23:23:29 -0500 |
commit | c48689d34809943a5907884bd287cea9ae275352 (patch) | |
tree | d49ff06b0d4b81f6ab0eac8060d178ce7542476c /docs/source/lang/api/max.rst | |
parent | 64431fd4b59cb8656365f1fad5f679cd4d756239 (diff) | |
parent | a9b2d70bc7799ca96c1673b18fe3012b1a4dd329 (diff) | |
download | librambutan-c48689d34809943a5907884bd287cea9ae275352.tar.gz librambutan-c48689d34809943a5907884bd287cea9ae275352.zip |
Merge remote branch 'leaf/master'
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-rw-r--r-- | docs/source/lang/api/max.rst | 65 |
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diff --git a/docs/source/lang/api/max.rst b/docs/source/lang/api/max.rst new file mode 100644 index 0000000..d38eebe --- /dev/null +++ b/docs/source/lang/api/max.rst @@ -0,0 +1,65 @@ +.. highlight:: cpp + +.. _lang-max: + +max() +===== + +(Macro) Calculates the maximum of two numbers. + +Syntax +------ + +:: + + max(x, y) + +Parameters +---------- + +**x**: the first number; may be any number or numeric expression. + +**y**: the second number; may be any number or numeric expression. + + +Returns +------- + +The larger of the two parameter values. + +Example +------- + +:: + + sensVal = max(senVal, 20); // assigns sensVal to the larger of sensVal or 20 + // (effectively ensuring that it is at least 20) + +.. note:: Perhaps counter-intuitively, max() is often used to + constrain the lower end of a variable's range, while :ref:`min() + <lang-min>` is used to constrain the upper end of the range. + +Warning +------- + +Because of the way ``max()`` is implemented, avoid using other +functions inside the parentheses. It may lead to incorrect results:: + + max(a--, 0); // avoid this - yields incorrect results + + a--; // use this instead - + max(a, 0); // keep other operations outside max() + +Arduino Compatibility +--------------------- + +The Maple version of ``max()`` is compatible with Arduino. + +See Also +-------- + +- :ref:`min() <lang-min>` +- :ref:`constrain() <lang-constrain>` + + +.. include:: cc-attribution.txt |