Rounding sensor values down to 2 decimal places

Projects Programming
1

So I understand that floats are accurate up to 6-7 decimal places, but if I want to have a function return a value with only up to 2 decimal places would there be a straightforward way to do so?

Thanks

2

One (convoluted) way is to multiply by 100 (or 10^x where x is the number of decimal points you need), cast it to an int or long, then assign it back to a float and divide by 10^x.

eg, using 10.987

  • 100 = 1098.7
    to int 1098
    to float 1098.0
    /100 = 10.98

If you just need conversion when the number is printed you can specify that in the print statement.