Usually, assign statements are simple and straightforward. But suppose there is a complex one that has parenthesis and concatenation and a bunch of different operators; What is the exact order of evaluation priorities of the operators that come on the right side of an assign statement?
There are a bunch of different operator types:
arithmeticlogicalrelationalequalitybitwisereductionshiftconcatenationreplicationconditional
In other words, if you were to convert an assign statement into an always block, what is the exact order of organizing the operations?
Answer
Thanks to @dave_59, based on IEEE's documentation, the priorities in descending order are:
| Operator | Associativity |
|---|---|
(), [], ::, . |
Left |
+, -, !, ~, &, ~&, |, ~|, ^, ~^, ^~, ++, -- (unary) |
|
** |
Left |
*, /, % |
Left |
+, - (binary) |
Left |
<<, >>, <<<, >>> |
Left |
<, <=, >, >=, inside, dist |
Left |
==, !=, ===, !==, ==?, !=? |
Left |
& (binary) |
Left |
^, ~^, ^~ (binary) |
Left |
| (binary) |
Left |
&& |
Left |
|| |
Left |
?: (conditional operator) |
Right |
–>, <–> |
Right |
=, +=, -=, *=, /=, %=, &=, ^=, \|=, <<=, >>=, <<<=, >>>=, :=, :/, <= |
None |
{}, {{}} |
Concatenation |
