On 11/21/2016 11:16 AM, Kagamin wrote:
Can't find a function for it.
Here is a draft adapted from the following page http://stackoverflow.com/questions/14872499/is-there-an-equivalent-to-muldiv-for-linux This draft works for signed types: T mulDiv(T)(T number, T numerator, T denominator) { static if (is (T == long)) { static assert("Sorry, can't support long"); } else static if (is (T == int)) { alias InterimT = long; } else { alias InterimT = int; } InterimT ret = number; ret *= numerator; ret /= denominator; return cast(T)ret; } void main() { int number = int.max / 2; int numerator = 42; int denominator = numerator * 2; const correctResult = int.max / 4; const wrongResult = number * numerator / denominator; assert(mulDiv(number, numerator, denominator) == correctResult); assert(wrongResult != correctResult); } Ali