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py/mpz: In divmod, replace check for rhs!=0 with assert. 

The check for division by zero is made by the caller of this function.
This commit is contained in:
Damien George 2016-10-11 13:00:01 +11:00
parent 5e22afce41
commit 48874942f0
1 changed files with 2 additions and 5 deletions
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7
py/mpz.c
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@ -1497,13 +1497,10 @@ mpz_t *mpz_lcm(const mpz_t *z1, const mpz_t *z2) {
quo * rhs + rem = lhs
0 <= rem < rhs
can have lhs, rhs the same
assumes rhs != 0 (undefined behaviour if it is)
*/
void mpz_divmod_inpl(mpz_t *dest_quo, mpz_t *dest_rem, const mpz_t *lhs, const mpz_t *rhs) {
if (rhs->len == 0) {
mpz_set_from_int(dest_quo, 0);
mpz_set_from_int(dest_rem, 0);
return;
}
assert(!mpz_is_zero(rhs));
mpz_need_dig(dest_quo, lhs->len + 1); // +1 necessary?
memset(dest_quo->dig, 0, (lhs->len + 1) * sizeof(mpz_dig_t));