Add release note

numpy · mhvk · Apr 18, 2025 · Apr 14, 2025 · Apr 14, 2025 · Apr 15, 2025
commit f0a33ae9d034838f9b89a838e456b3713b1f58ce
diff --git a/doc/release/upcoming_changes/28703.change.rst b/doc/release/upcoming_changes/28703.change.rst
@@ -0,0 +1,2 @@
+* Printing of ``np.float16`` and ``np.float32`` scalars and arrays have been improved by
+  adjusting the transition to scientific notation based on the floating point precision.
diff --git a/numpy/_core/arrayprint.py b/numpy/_core/arrayprint.py
@@ -990,13 +990,11 @@ def fillFormat(self, data):
 
         # choose exponential mode based on the non-zero finite values:
         abs_non_zero = absolute(finite_vals[finite_vals != 0])
-
-        # consider data type while deciding the max cutoff for exp format
-        exp_cutoff_max = 10.**min(8, np.finfo(data.dtype).precision)
-
         if len(abs_non_zero) != 0:
             max_val = np.max(abs_non_zero)
             min_val = np.min(abs_non_zero)
+            # consider data type while deciding the max cutoff for exp format
+            exp_cutoff_max = 10.**min(8, np.finfo(data.dtype).precision)
             with errstate(over='ignore'):  # division can overflow
                 if max_val >= exp_cutoff_max or (not self.suppress_small and
                         (min_val < 0.0001 or max_val / min_val > 1000.)):
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		* Printing of ``np.float16`` and ``np.float32`` scalars and arrays have been improved by
		adjusting the transition to scientific notation based on the floating point precision.
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