viirya commented on code in PR #7274:
URL: https://github.com/apache/arrow-datafusion/pull/7274#discussion_r1292458674
##########
docs/source/user-guide/expressions.md:
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@@ -94,6 +94,8 @@ expressions such as `col("a") + col("b")` to be used.
| factorial(x) | factorial |
| floor(x) | nearest integer less than or equal to argument |
| gcd(x, y) | greatest common divisor |
+| isnan(x) | predicate determining whether NaN or not |
+| iszero(x) | predicate determining whether 0.0 or not |
Review Comment:
```suggestion
| isnan(x) | predicate determining whether NaN/-NaN or not
|
| iszero(x) | predicate determining whether 0.0/-0.0 or not
|
```
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