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py/mpz: Do Python style division/modulo within bignum divmod routine.

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This patch consolidates the Python logic for division/modulo to one place
within the bignum code.
This commit is contained in:
Damien George
2016-05-08 22:21:21 +01:00
parent dc3faea040
commit 65402ab1ec
3 changed files with 8 additions and 16 deletions
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6
py/mpz.c
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@@ -1509,8 +1509,14 @@ void mpz_divmod_inpl(mpz_t *dest_quo, mpz_t *dest_rem, const mpz_t *lhs, const m
//rhs->dig[rhs->len] = 0;
mpn_div(dest_rem->dig, &dest_rem->len, rhs->dig, rhs->len, dest_quo->dig, &dest_quo->len);
// check signs and do Python style modulo
if (lhs->neg != rhs->neg) {
dest_quo->neg = 1;
if (!mpz_is_zero(dest_rem)) {
mpz_t mpzone; mpz_init_from_int(&mpzone, -1);
mpz_add_inpl(dest_quo, dest_quo, &mpzone);
mpz_add_inpl(dest_rem, dest_rem, rhs);
}
}
}