unity5 - C# - Clamping an angle vs using modulo -


what difference between clamping angle in following code

do  {    if(angle < -360)    {      angle += 360;    }    if(angle > 360)    {      angle -= 360;    }  }while(angle < -360 || angle > 360);

... , using modulo arithmetics;

angle = angle % 360;

... , if relevant unity game engine.

assuming angle integer, difference clamp code allows angles of -360 or +360 degrees. modulo reduce zero.

the comments speak of difference in handling negative values. comments wrong. both approaches leave -10 -10.

if angle isn't integer type though, if it's double instance, % operator may give different results repeated addition or subtraction, due repeated addition or subtraction introducing rounding problems. in case, % operator better match. you'd need excessively large angles become problem though, , excessively large angles, don't have enough precision represent angles accurately anyway.


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