X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=doc%2Fcrypto%2FBN_set_bit.pod;h=b7c47b9b01583e2fd33a4a2e503c6e9f8e1d4cba;hp=75dc5e68e01d3856773290847e37ffafba6aa803;hb=d52c973498901e7cd6453ee1fcd75d7d770b0d3c;hpb=bb075f883356589425b7e57f788c7498a83b0219

diff --git a/doc/crypto/BN_set_bit.pod b/doc/crypto/BN_set_bit.pod
index 75dc5e68e0..b7c47b9b01 100644
--- a/doc/crypto/BN_set_bit.pod
+++ b/doc/crypto/BN_set_bit.pod
@@ -3,7 +3,7 @@
 =head1 NAME
 
 BN_set_bit, BN_clear_bit, BN_is_bit_set, BN_mask_bits, BN_lshift,
-BN_lshift1, BN_rshift, BN_rshift1 - Bit operations on BIGNUMs
+BN_lshift1, BN_rshift, BN_rshift1 - bit operations on BIGNUMs
 
 =head1 SYNOPSIS
 
@@ -28,12 +28,12 @@ BN_set_bit() sets bit B<n> in B<a> to 1 (C<a|=(1E<lt>E<lt>n)>). The
 number is expanded if necessary.
 
 BN_clear_bit() sets bit B<n> in B<a> to 0 (C<a&=~(1E<lt>E<lt>n)>). An
-error occurs it B<a> is shorter than B<n> bits.
+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<q&=~((~0)E<gt>E<gt>n)>).  An error occurs it B<a> already is
+(C<a&=~((~0)E<gt>E<gt>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
@@ -44,6 +44,8 @@ BN_rshift() shifts B<a> right by B<n> bits and places the result in
 B<r> (C<r=a/2^n>). BN_rshift1() shifts B<a> right by one and places
 the result in B<r> (C<r=a/2>).
 
+For the shift functions, B<r> and B<a> may be the same variable.
+
 =head1 RETURN VALUES
 
 BN_is_bit_set() returns 1 if the bit is set, 0 otherwise.