diff options
Diffstat (limited to 'py')
| -rw-r--r-- | py/mpz.c | 10 | ||||
| -rw-r--r-- | py/objint_mpz.c | 1 |
2 files changed, 9 insertions, 2 deletions
@@ -1609,7 +1609,6 @@ bool mpz_as_uint_checked(const mpz_t *i, mp_uint_t *value) { return true; } -// writes at most len bytes to buf (so buf should be zeroed before calling) void mpz_as_bytes(const mpz_t *z, bool big_endian, size_t len, byte *buf) { byte *b = buf; if (big_endian) { @@ -1641,6 +1640,15 @@ void mpz_as_bytes(const mpz_t *z, bool big_endian, size_t len, byte *buf) { } } } + + // fill remainder of buf with zero/sign extension of the integer + if (big_endian) { + len = b - buf; + } else { + len = buf + len - b; + buf = b; + } + memset(buf, z->neg ? 0xff : 0x00, len); } #if MICROPY_PY_BUILTINS_FLOAT diff --git a/py/objint_mpz.c b/py/objint_mpz.c index 6e52073a6e..ef3e017967 100644 --- a/py/objint_mpz.c +++ b/py/objint_mpz.c @@ -116,7 +116,6 @@ mp_obj_t mp_obj_int_from_bytes_impl(bool big_endian, size_t len, const byte *buf void mp_obj_int_to_bytes_impl(mp_obj_t self_in, bool big_endian, size_t len, byte *buf) { assert(mp_obj_is_type(self_in, &mp_type_int)); mp_obj_int_t *self = MP_OBJ_TO_PTR(self_in); - memset(buf, 0, len); mpz_as_bytes(&self->mpz, big_endian, len, buf); } |