Intel has a document, Enhancements to the Architecture and Microarchitecture of Intel® Core ™ 2 Processors for processors in which they discuss a number of different sections of algorithms. First paragraph:
The new Radix-16 integer floating-point Radix-16 variable-delay floating-point divider replaces the Merom Radix-4 floating-point division and Radix-2 square root and integer hardware. The previous algorithm relates to the implementation of Pentium® division.
, , Intel (Radix-2) Pentium.
Google [ 16] .