HPC·Arithmetic2026.09.11· 1 minFast Inverse Square RootContents · 7 of 11A constant, a shift, and a Newton step. History, then the instruction that replaced it.Newton's Method........................................................................................................................................................................................................PreviousInteger Numbers........................................................................................................................................................................................................Next#hpcFloating-Point Numbers........................................................................................................................................................................................................2026.09.11IEEE 754 Floats........................................................................................................................................................................................................2026.09.11Rounding Errors........................................................................................................................................................................................................2026.09.11Newton's Method........................................................................................................................................................................................................2026.09.11Integer Numbers........................................................................................................................................................................................................2026.09.11Suggest an editMarkdownHistoryComments