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Correct description of BN_mask_bits

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CLA: trivial

Correct right shift to left shift.
Pseudo code `a&=~((~0)>>n)` means "get higher n-bits of a", but actually crypto lib gives lower n-bits.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/12727)
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T.Yanagisawa 2020-08-27 11:11:23 +09:00 committed by Pauli
parent 33855c0af6
commit b6ef3c7089
1 changed files with 1 additions and 1 deletions
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doc/man3/BN_set_bit.pod
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@ -33,7 +33,7 @@ error occurs if B<a> is shorter than B<n> bits.
BN_is_bit_set() tests if bit B<n> in B<a> is set.
BN_mask_bits() truncates B<a> to an B<n> bit number
(C<a&=~((~0)E<gt>E<gt>n)>). An error occurs if B<a> already is
(C<a&=~((~0)E<lt>E<lt>n)>). An error occurs if B<a> already is
shorter than B<n> bits.
BN_lshift() shifts B<a> left by B<n> bits and places the result in