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"