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[math] Document scientific notation

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Fabian Homborg 2018-02-26 17:55:17 +01:00
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doc_src/math.txt
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@ -19,6 +19,28 @@ The following options are available:
If the expression is successfully evaluated the return `status` is zero (success) else one.
\subsection math-syntax
`math` knows some operators, constants, functions and can (obviously) read numbers.
For numbers, `.` is always the radix character regardless of locale - `2.5`, not `2,5`. Scientific notation (`10e5`) is also available.
\subsection math-operators
`math` knows the following operators:
- `+` for addition and `-` for subtraction.
- `*` for multiplication, `/` for division.
- `^` for exponentiation.
- `%` for modulo.
- `(` and `)` for grouping.
They are all used in an infix manner - `5 + 2`, not `+ 5 2`.
\subsection math-constants
`math` knows the following constants: