Got it, THX, Gwendal. On Thu, Jul 16, 2015 at 2:19 AM, Lars-Peter Clausen <lars@xxxxxxxxxx> wrote: > On 07/16/2015 01:24 AM, Gwendal Grignou wrote: >> >> Lars, >> >> Looking at the macro IIO_DEGREE_TO_RAD() to translate degree/s into rad/s, >> I don't understand why we add an offset when doing the conversion: >> >> #define IIO_DEGREE_TO_RAD(deg) (((deg) * 314159ULL + 9000000ULL) / >> 18000000ULL) >> >> Shouldn't it just be >> #define IIO_DEGREE_TO_RAD(deg) (((deg) * 314159ULL) / 18000000ULL) > > > Hi, > > The offset is for rounding to the nearest integer. Without the offset it > would round down. > > - Lars > > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
