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simplify mp_complement

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Daniel Mendler 2019-11-03 11:00:33 +01:00
parent bcda8fc696
commit 3b710fbd7e
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GPG Key ID: D88ADB2A2693CA43
1 changed files with 3 additions and 2 deletions
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mp_complement.c
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@ -6,7 +6,8 @@
/* b = ~a */ /* b = ~a */
mp_err mp_complement(const mp_int *a, mp_int *b) mp_err mp_complement(const mp_int *a, mp_int *b)
{ {
mp_err err = mp_neg(a, b); mp_int a_ = *a;
return (err == MP_OKAY) ? mp_sub_d(b, 1uL, b) : err; a_.sign = ((a_.sign == MP_ZPOS) && !mp_iszero(a)) ? MP_NEG : MP_ZPOS;
return mp_sub_d(&a_, 1uL, b);
} }
#endif #endif