Справочник Пользователя для AMD 250
248
x87 Floating-Point Optimizations
Chapter 10
25112
Rev. 3.06
September 2005
Software Optimization Guide for AMD64 Processors
10.7
Avoiding Extended-Precision Data
Optimization
Store floating-point data in single-precision or double-precision format.
Application
This optimization applies to:
•
32-bit software
•
64-bit software
Rationale
Loading and storing extended-precision data is significantly slower than storing single- or double-
precision data.
precision data.