Cute idea! But I hardly think base-10 logarithms are "completely" obsolete. We write numbers in base-10 and so the length of the number is its magnitude. You

Cute idea! But I hardly think base-10 logarithms are "completely" obsolete. We write numbers in base-10 and so the length of the number is its magnitude. Your statement is like saying that strlen() is obsolete and we should be using strlen2() which reports the number of bits in the string instead.