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math: Add options to calculate and format output as hexadecimal

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Daniel Franke
2018-05-18 21:59:46 +02:00
committed by Brad King
parent 8661e7052c
commit 5dbee9d2d0
18 changed files with 221 additions and 69 deletions
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18
Help/command/math.rst
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@@ -5,10 +5,26 @@ Mathematical expressions.
::
math(EXPR <output-variable> <math-expression>)
math(EXPR <output-variable> <math-expression> [OUTPUT_FORMAT <format>])
``EXPR`` evaluates mathematical expression and returns result in the
output variable. Example mathematical expression is ``5 * (10 + 13)``.
Supported operators are ``+``, ``-``, ``*``, ``/``, ``%``, ``|``, ``&``,
``^``, ``~``, ``<<``, ``>>``, and ``(...)``. They have the same meaning
as they do in C code.
Numeric constants are evaluated in decimal or hexadecimal representation.
The result is formatted according to the option "OUTPUT_FORMAT" ,
where ``<format>`` is one of:
::
HEXADECIMAL = Result in output variable will be formatted in C code
Hexadecimal notation.
DECIMAL = Result in output variable will be formatted in decimal notation.
For example::
math(EXPR value "100 * 0xA" DECIMAL) results in value is set to "1000"
math(EXPR value "100 * 0xA" HEXADECIMAL) results in value is set to "0x3e8"