Hi,
I have two bytes arriving from my node and I am trying to perform the calculation 2^^bytes[0] * bytes[1] with JS in the Application Configuration. ie bytes[1] is the mantissa and bytes[0] is the exponential term.
I have tried two different methods and both result in an error
(2 ** bytes[0]) * bytes[1]
Math.pow(2,bytes[0]) * bytes[1]
Is it possible to calculate Exponentials in the Application Configuration? If so, could someone point me to the correct syntax.
Regards
Tony
I’ve just read that the Application Configuration is based on ECMAScript 5 is also known as ES5 and ECMAScript 2009.
On a JS site I can see Exponential Arithmetic was introduced in ECMAScript 6 (also known as ES6 and ECMAScript 2015).
Based on that, it looks like I’m going to have to go to Plan B and perform the calculation another way.
Solved
The equation I am calculating is “var result = 2^^bytes[0] * bytes[1]”
In this case the power to base 2 is the same as left shifting by the number contained in bytes[0], so the equation could be rewritten something like “var result = (1<< bytes[0]) * bytes[1]”
However there is one further simplification which can be applied (and it works)
“var result = bytes[1] << bytes[0]”