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Diffstat (limited to 'source/lang/arithmetic.rst')
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1 files changed, 15 insertions, 17 deletions
diff --git a/source/lang/arithmetic.rst b/source/lang/arithmetic.rst index 9f21627..91fe22e 100644 --- a/source/lang/arithmetic.rst +++ b/source/lang/arithmetic.rst @@ -2,28 +2,27 @@ .. _lang-arithmetic: -Addition, Subtraction, Multiplication, & Division +Arithmetic Operators (``+``, ``-``, ``*``, ``/``) ================================================= -.. contents:: Contents - :local: - -Description ------------ - -These operators return the sum, difference, product, or quotient -(respectively) of the two operands. The operation is conducted using -the data type of the operands, so, for example, ``9 / 4`` gives ``2`` -since 9 and 4 are :ref:`int variables <lang-int>`. +The operators ``+``, ``-``, ``*``, and ``/`` respectively evaluate to +the sum, difference, product, or quotient (respectively) of the two +operands. The operation is conducted using the data type of the +operands, so, for example, ``9 / 4`` gives ``2`` since 9 and 4 are +:ref:`int variables <lang-int>`. This also means that the operation can overflow if the result is larger than that which can be stored in the data type (e.g. adding 1 -to an :ref:`lang-int` with the value 2147483647 gives --2147483648). If the operands are of different types, the "larger" -type is used for the calculation. +to an :ref:`lang-int` with the value 2,147,483,647 gives +-2,147,483,648). .. _lang-arithmetic-typeconversion: +If the operands are of different types, the "larger" type is used for +the calculation. If one of the numbers (operands) are of the type +**float** or of type **double**, floating point math will be used for +the calculation. + .. note:: The specifics of these rules are beyond the scope of this documentation; for more information, see `The C++ Programming Language <http://www2.research.att.com/~bs/3rd.html>`_\ , by Bjarne @@ -35,9 +34,8 @@ type is used for the calculation. see the Wikipedia page on `two's complement <http://en.wikipedia.org/wiki/Two's_complement>`_. -If one of the numbers (operands) are of the type **float** or of type -**double**, floating point math will be used for the -calculation. +.. contents:: Contents + :local: Examples -------- |