> By scaling the numbers first by taking the log, multiplication becomes addition and addition becomes x + log1p(exp(y - x)).
Addition/subtraction in a logarithmic number system is way more expensive than what you would spend on multiplication, especially if you care about correctly rounded results, as the (hardware) LUTs required are rather big.
Addition/subtraction in a logarithmic number system is way more expensive than what you would spend on multiplication, especially if you care about correctly rounded results, as the (hardware) LUTs required are rather big.