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1af0de1f
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2019-05-20T19:11:25
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deprecate mp_tc_(and|or|xor) in favor of mp_(and|or|xor)
* same behavior for positive numbers
* generalisation for negative numbers, treating them as two complement
* improve algorithm, iterate once over the digits, manually perform two complement
* simplify mp_add_d, mp_sub_d
* functions are safe in case of a==c or b==c
* renamed mp_tc_div_2d to mp_signed_rsh (signed right shift)
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