Floating-Point IP Cores User Guide

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ID 683750
Date 9/13/2021
Public
Document Table of Contents

8.3. ALTFP_INV Truth Table

Table 45.  Truth Table for Inverse Operations
DATA[] SIGN BIT RESULT[] Underflow Zero Division_by_zero NaN
Normal 0/1 Normal 0 0 0 0
Normal 0/1 Denormal 1 1 0 0
Normal 0/1 Infinity 0 0 0 0
Normal 0/1 Zero 1 1 0 0
Denormal 0/1 Infinity 0 0 1 0
Zero 0/1 Infinity 0 0 1 0
Infinity 0/1 Zero 0 1 0 0
NaN X NaN 0 0 0 1
3 Any calculated or computed denormal output is replaced by a zero and asserts the zero and underflow flags.
4 Any denormal input is treated as a zero before going through the inverse process.

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