3 ms·
To me "inverse square root" means "square" so it makes the title of this kind of funny.
by zeroonetwothree 6y ago
To me "inverse square root" means "square" so it makes the title of this kind of funny.
- drinkwell 6y agoYeah, shouldn't it be 'fast reciprocal square root'?
- MaxBarraclough 6y agoAgreed. Inverse is not a synonym for reciprocal, but it's too late, the name has stuck.
- jessriedel 6y agoNo, it's completely different than simple squaring. The inverse square root is undefined for negative numbers ;)
- MaxBarraclough 6y agoThat's not right. The so-called fast inverse square root function computes the reciprocal of the square root, not the square. You're not the only one to be confused by the name. An awful choice of name, in my opinion.
- balddenimhero 6y agoHere, "inverse" is an abbreviation of "multiplicative inverse" (aka. the reciprocal). Granted, shortening it to just "inverse" is misleading, but the name has stuck.