Mercurial > dropbear
view libtommath/bn_mp_incr.c @ 1723:5386011b740d
Disable toom and karatsuba for new libtommath
author | Matt Johnston <matt@ucc.asn.au> |
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date | Thu, 18 Jun 2020 19:12:07 +0800 |
parents | 1051e4eea25a |
children |
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#include "tommath_private.h" #ifdef BN_MP_INCR_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* Increment "a" by one like "a++". Changes input! */ mp_err mp_incr(mp_int *a) { if (MP_IS_ZERO(a)) { mp_set(a,1uL); return MP_OKAY; } else if (a->sign == MP_NEG) { mp_err err; a->sign = MP_ZPOS; if ((err = mp_decr(a)) != MP_OKAY) { return err; } /* There is no -0 in LTM */ if (!MP_IS_ZERO(a)) { a->sign = MP_NEG; } return MP_OKAY; } else if (a->dp[0] < MP_DIGIT_MAX) { a->dp[0]++; return MP_OKAY; } else { return mp_add_d(a, 1uL,a); } } #endif