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diff --git a/source/lang/cpp/long.rst b/source/lang/cpp/long.rst deleted file mode 100644 index d8498c0..0000000 --- a/source/lang/cpp/long.rst +++ /dev/null @@ -1,52 +0,0 @@ -.. highlight:: cpp - -.. _lang-long: - -``long`` -======== - -The ``long`` data type stores extended size integer values. You can -use a ``long`` when your values are too large to fit into an :ref:`int -<lang-int>`. A ``long`` occupies 8 bytes of memory. This yields a -range of approximately -9.2×10^18 to 9.2×10^18 (that's 9.2 billion -billion, or about 92 million times the number of stars in the Milky -Way galaxy). The exact range of a ``long`` on the Maple is from --9,223,372,036,854,775,808 to 9,223,372,036,854,775,807, or -2^63 to -(2^63-1). A ``long`` it is subject to the same :ref:`overflow issues -<lang-variables-rollover>` as any numeric data type. - -Here's an example of declaring a long (see :ref:`integer constants -<lang-constants-integers-u-l>` for an explanation of the "L" at the end of the -number):: - - // Speed of light in nanometers per second (approximate). - long c = 299792458000000000L; - -The general syntax for declaring an ``long`` variable named ``var``, -then giving it value ``val``, looks like:: - - long var = val; - -This is identical to the ``int`` syntax, with ``long`` replacing -``int``. - -Note that ``long`` values will still :ref:`overflow -<lang-int-overflow>`, just like ``int`` values, but their much -larger range makes this less likely to happen. - -The downside to using a ``long`` instead of an ``int`` (besides the -extra storage) is that :ref:`arithmetic <lang-arithmetic>` operations -on ``long``\ s will take slightly longer than on ``int``\ s. - -See Also --------- - -- :ref:`char <lang-char>` -- :ref:`unsigned char <lang-unsignedchar>` -- :ref:`int <lang-int>` -- :ref:`unsigned int <lang-unsignedint>` -- :ref:`unsigned long <lang-unsignedlong>` -- :ref:`Integer Constants <lang-constants-integers>` -- :ref:`Variables <lang-variables>` - -.. include:: cc-attribution.txt |