Ciao Torbjörn, Il 2022-02-27 10:53 Torbjörn Granlund ha scritto:
Perhaps one could write it (n & 0xff)/2 and get better code
Actually, this trick is already used! In tune/modlinv.c :-/
The following line dates back to 2002:
__inv = binvert_limb_table[(__n&0xFF)/2]; /* 8 */ \
I did never look into that file :-)
Ĝis,
m
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