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py: Fix handling of negative numbers in struct.pack of q/Q.

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Damien George
2015-04-25 23:51:14 +01:00
parent ae2c81ff38
commit 9472907ae1
2 changed files with 6 additions and 2 deletions
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4
py/mpz.c
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@@ -1441,8 +1441,8 @@ void mpz_as_bytes(const mpz_t *z, bool big_endian, mp_uint_t len, byte *buf) {
for (; bits >= 8; bits -= 8, d >>= 8) {
mpz_dig_t val = d;
if (z->neg) {
d = (~d & 0xff) + carry;
carry = d >> 8;
val = (~val & 0xff) + carry;
carry = val >> 8;
}
if (big_endian) {
*--b = val;