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| author | Marco Bodrato <bodrato@mail.dm.unipi.it> | 2020-02-06 17:49:44 +0100 |
|---|---|---|
| committer | Marco Bodrato <bodrato@mail.dm.unipi.it> | 2020-02-06 17:49:44 +0100 |
| commit | 42473ba3511937346246eef36ce7e3ef373a6215 (patch) | |
| tree | 55b4131968fec9a06996b1db8051d6ae9dea05f7 /mpn/generic | |
| parent | 2482b89c0d8aca660010a39009cc943d4f8885c3 (diff) | |
| download | gmp-42473ba3511937346246eef36ce7e3ef373a6215.tar.gz | |
mpn/generic/perfsqr.c: Small changes in unused code...
Diffstat (limited to 'mpn/generic')
| -rw-r--r-- | mpn/generic/perfsqr.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/mpn/generic/perfsqr.c b/mpn/generic/perfsqr.c index 38a1a91ed..1ea5c84b4 100644 --- a/mpn/generic/perfsqr.c +++ b/mpn/generic/perfsqr.c @@ -194,7 +194,7 @@ mpn_perfect_square_p (mp_srcptr up, mp_size_t usize) #if 0 /* Check that we have even multiplicity of 2, and then check that the rest is a possible perfect square. Leave disabled until we can determine this - really is an improvement. It it is, it could completely replace the + really is an improvement. If it is, it could completely replace the simple probe above, since this should throw out more non-squares, but at the expense of somewhat more cycles. */ { @@ -207,8 +207,7 @@ mpn_perfect_square_p (mp_srcptr up, mp_size_t usize) if ((cnt & 1) != 0) return 0; /* return of not even multiplicity of 2 */ lo >>= cnt; /* shift down to align lowest non-zero bit */ - lo >>= 1; /* shift away lowest non-zero bit */ - if ((lo & 3) != 0) + if ((lo & 6) != 0) return 0; } #endif |