def test_mpmath_issues():
from sympy.mpmath.libmp.libmpf import _normalize
import sympy.mpmath.libmp as mlib
rnd = mlib.round_nearest
mpf = (0, long(0), -123, -1, 53, rnd) # nan
assert _normalize(mpf, 53) != (0, long(0), 0, 0)
mpf = (0, long(0), -456, -2, 53, rnd) # +inf
assert _normalize(mpf, 53) != (0, long(0), 0, 0)
mpf = (1, long(0), -789, -3, 53, rnd) # -inf
assert _normalize(mpf, 53) != (0, long(0), 0, 0)
from sympy.mpmath.libmp.libmpf import fnan
assert mlib.mpf_eq(fnan, fnan)
def __ne__(self, other):
try:
other = _sympify(other)
except SympifyError:
return True # sympy != other
if isinstance(other, NumberSymbol):
if other.is_irrational: return True
return other.__ne__(self)
if isinstance(other, FunctionClass): #cos as opposed to cos(x)
return True
if isinstance(other, Number):
return bool(not mlib.mpf_eq(self._mpf_, other._as_mpf_val(self._prec)))
return True # Real != non-Number
def __eq__(self, other):
try:
other = _sympify(other)
except SympifyError:
return False # sympy != other --> not ==
if isinstance(other, NumberSymbol):
if other.is_irrational: return False
return other.__eq__(self)
if isinstance(other, FunctionClass): #cos as opposed to cos(x)
return False
if other.is_comparable: other = other.evalf()
if isinstance(other, Number):
return bool(mlib.mpf_eq(self._mpf_, other._as_mpf_val(self._prec)))
return False # Real != non-Number
def __ne__(self, other):
try:
other = _sympify(other)
except SympifyError:
return True # sympy != other
if isinstance(other, NumberSymbol):
if other.is_irrational: return True
return other.__ne__(self)
if isinstance(other, FunctionClass): #cos as opposed to cos(x)
return True
if other.is_comparable: other = other.evalf()
if isinstance(other, Number):
return bool(not mlib.mpf_eq(self._mpf_, other._as_mpf_val(self._prec)))
return True # Real != non-Number
def __ne__(self, other):
try:
other = _sympify(other)
except SympifyError:
return True # sympy != other
if isinstance(other, NumberSymbol):
if other.is_irrational: return True
return other.__ne__(self)
if isinstance(other, FunctionClass): #cos as opposed to cos(x)
return True
if other.is_comparable and not isinstance(other, Rational): other = other.evalf()
if isinstance(other, Number):
if isinstance(other, Real):
return bool(not mlib.mpf_eq(self._as_mpf_val(other._prec), other._mpf_))
return bool(self.p!=other.p or self.q!=other.q)
return True # Rational != non-Number
def __eq__(self, other):
try:
other = _sympify(other)
except SympifyError:
return False # sympy != other --> not ==
if isinstance(other, NumberSymbol):
if other.is_irrational: return False
return other.__eq__(self)
if isinstance(other, FunctionClass): #cos as opposed to cos(x)
return False
if other.is_comparable and not isinstance(other, Rational):
other = other.evalf()
if isinstance(other, Number):
if isinstance(other, Real):
return bool(mlib.mpf_eq(self._as_mpf_val(other._prec), other._mpf_))
return bool(self.p==other.p and self.q==other.q)
return False # Rational != non-Number
