Floating-Point IP Cores User Guide

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

7.3. ALTFP_EXP Truth Table

Table 39.  Truth Table for Exponential Operations
DATAA[] Calculation RESULT[] NaN Overflow Underflow Zero
Normal edata Normal 0 0 0 0
Normal edata Infinity 0 1 0 0
Normal (numbers of small magnitude) edata 1 0 0 1 0
Normal (negative numbers of large magnitude) edata 0 0 0 1 0
Denormal e0 1 0 0 0 0
Zero e0 1 0 0 0 0
Infinity (+) e+ Infinity 0 0 0 0
Infinity (-) e- 0 0 0 0 1
NaN NaN 1 0 0 0
2 Any denormal input is treated as a zero before going through the exponential process.

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