xonx4l commented on code in PR #19497:
URL: https://github.com/apache/datafusion/pull/19497#discussion_r2647425601


##########
datafusion/common/src/scalar/consts.rs:
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@@ -17,24 +17,36 @@
 
 // Constants defined for scalar construction.
 
+// Next F16 value above π (upper bound)
+pub(super) const PI_UPPER_F16: half::f16 = half::f16::from_bits(0x4249);

Review Comment:
   These are the IEEE 754 binary16 half-precision bit representations closest 
to pi.



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