New submission from Bobblehead: >>> (-0)**.5 0.0
Should return -0.0 "Except that squareRoot(−0) shall be −0", IEEE 754-2008, Section 5.4.1 >>> 1/(-0.0) Traceback (most recent call last): File "<stdin>", line 1, in <module> ZeroDivisionError: float division by zero >>> 1/(0.0) Traceback (most recent call last): File "<stdin>", line 1, in <module> ZeroDivisionError: float division by zero Should return -inf, and inf respectively. "For division, when the divisor is zero and the dividend is a finite non-zero number, the sign of the infinity is the exclusive OR of the operands’ signs", IEEE 754-2008, Section 7.3 ---------- components: Interpreter Core messages: 298368 nosy: Bobblehead priority: normal severity: normal status: open title: Python not IEEE 754 float compliant for various zero results type: behavior versions: Python 2.7, Python 3.3, Python 3.4, Python 3.5, Python 3.6, Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30933> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
