math¶
Mathematical expressions.
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"