Developer Reference

  • 2020
  • 10/21/2020
  • Public Content
Contents

Rounding Mode

General signal processing functions use rounding. The default rounding mode is
nearest even
, that is the fixed point number
x
=
N
+ α, 0 ≤ α < 1, where
N
is an integer number, is rounded as given by:
For example, 1.5 will be rounded to 2 and 2.5 to 2.
Some functions have additional rounding modes, which are set by the parameter
roundMode
.
  • Functions for data compression, data integrity, string processing and fixed-accuracy arithmetic do not perform rounding.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.