micropython

Wykres commitów

Autor	SHA1	Wiadomość	Data
Damien George	2c139bbf4e	py/mpz: Fix bugs with bitwise of -0 by ensuring all 0's are positive. This commit makes sure that the value zero is always encoded in an mpz_t as neg=0 and len=0 (previously it was just len=0). This invariant is needed for some of the bitwise operations that operate on negative numbers, because they cannot handle -0. For example (-((1<<100)-(1<<100)))\|1 was being computed as -65535, instead of 1. Fixes issue #8042. Signed-off-by: Damien George <damien@micropython.org>	2021-12-21 18:00:05 +11:00
Damien George	a9dc9b8f6d	py: Fix comparison of minus-zero long int.	2015-01-27 17:47:38 +00:00
Damien George	e0ac194f4f	py: Fix rshift and not of zero/one edge cases in mpz. Addresses issue #1027.	2014-12-31 19:35:01 +00:00

Autor

SHA1

Wiadomość

Data

Damien George

2c139bbf4e

py/mpz: Fix bugs with bitwise of -0 by ensuring all 0's are positive.

This commit makes sure that the value zero is always encoded in an mpz_t as
neg=0 and len=0 (previously it was just len=0).

This invariant is needed for some of the bitwise operations that operate on
negative numbers, because they cannot handle -0.  For example
(-((1<<100)-(1<<100)))|1 was being computed as -65535, instead of 1.

Fixes issue #8042.

Signed-off-by: Damien George <damien@micropython.org>

2021-12-21 18:00:05 +11:00

Damien George

a9dc9b8f6d

py: Fix comparison of minus-zero long int.

2015-01-27 17:47:38 +00:00

Damien George

e0ac194f4f

py: Fix rshift and not of zero/one edge cases in mpz.

Addresses issue #1027.

2014-12-31 19:35:01 +00:00

3 Commity (master)