That depends on how the programming language implements modulo. Some don't wrap around the way you would need here when the dividend is negative. See: https://e

That depends on how the programming language implements modulo. Some don't wrap around the way you would need here when the dividend is negative. See: https://en.wikipedia.org/wiki/Modulo#Variants_of_the_definition https://en.wikipedia.org/wiki/Modulo#Variants_of_the_definit...