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-math
-----
-
-Evaluate a mathematical expression.
-
-.. code-block:: cmake
-
- math(EXPR <variable> "<expression>" [OUTPUT_FORMAT <format>])
-
-Evaluates a mathematical ``<expression>`` and sets ``<variable>`` to the
-resulting value. The result of the expression must be representable as a
-64-bit signed integer.
-
-The mathematical expression must be given as a string (i.e. enclosed in
-double quotation marks). An example is ``"5 * (10 + 13)"``.
-Supported operators are ``+``, ``-``, ``*``, ``/``, ``%``, ``|``, ``&``,
-``^``, ``~``, ``<<``, ``>>``, and ``(...)``; they have the same meaning
-as in C code.
-
-Hexadecimal numbers are recognized when prefixed with ``0x``, as in C code.
-
-The result is formatted according to the option ``OUTPUT_FORMAT``,
-where ``<format>`` is one of
-
-``HEXADECIMAL``
- Hexadecimal notation as in C code, i. e. starting with "0x".
-``DECIMAL``
- Decimal notation. Which is also used if no ``OUTPUT_FORMAT`` option
- is specified.
-
-
-For example
-
-.. code-block:: cmake
-
- math(EXPR value "100 * 0xA" OUTPUT_FORMAT DECIMAL) # value is set to "1000"
- math(EXPR value "100 * 0xA" OUTPUT_FORMAT HEXADECIMAL) # value is set to "0x3e8"