The sketch below shows the difference. One is the easiest mathematical approach. (long)((x)+0.5):(long)((x)-0.5)) It could be renamed to something else, for example ROUND_INT().
float x = 2.9; // A float type variable int y = x; // 2 If, instead, you want to round off during the conversion process, you need to add 0.5 : float x = 2.9; int y = x + 0.5; // 3 Im Gegensatz zu anderen Plattformen, bei denen du durch die Verwendung eines double (z. So both (int) 3.2 and (int) 3.7 are 3. Corrections, suggestions, and new documentation should be posted to the Forum.

The macro round() in "Arduino.h" is a bug. It can not handle large floating point numbers and it returns a long integer. When casting from a float to an int, the value is truncated not rounded. #define round(x) ((x)>=0? By zoncatan. Let's take a break during navigation while Autopilot follows the route, control it with remote control! Just add 0.5 and then truncate away the decimal places.
Floats haben eine Genauigkeit von nur 6-7 Dezimalstellen. To achieve a round after the 0.1 place, you’d … For instance, say you round 37.777779 to 37.78, but the nearest representable number is 37.781. Round Float to 2 Decimal Places in Python. However, you can "round" a … B. bis zu 15 Ziffern) eine höhere Genauigkeit erzielen kannst, hat double auf dem Arduino die gleiche Größe wie float. Das bedeutet die Gesamtzahl der Ziffern, nicht die Zahl rechts vom Dezimalpunkt. The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. To round the float value to 2 decimal places, you have to use the Python round().The round function is the common function to use and requires only two arguments. There isn't a way to round a float to another float because the rounded float may not be representable (a limitation of floating-point numbers). Reference Home. If you want to round to 2 decimal places, you have …