Link to wikipedia

Author: stefanor

Lib/test/test_capi/test_float.py

@@ -200,6 +200,7 @@ def test_pack_unpack_roundtrip_for_nans(self):
                     signaling = 0
                     if platform.machine().startswith('parisc'):
                         # HP PA RISC uses 0 for quiet
+                        # https://en.wikipedia.org/wiki/NaN#Encoding
                         signaling = 1
                 quiet = int(not signaling)
                 if size == 8:

Lib/test/test_struct.py

@@ -920,6 +920,7 @@ def test_half_float(self):
         # all exponent bits and the msb of the fraction should all be 1.
         if platform.machine().startswith('parisc'):
             # HP PA RISC uses 0 for quiet
+            # https://en.wikipedia.org/wiki/NaN#Encoding
             expected = 0x7c
         else:
             expected = 0x7e