本文整理汇总了Python中mathics.core.expression.Number.from_mpmath方法的典型用法代码示例。如果您正苦于以下问题：Python Number.from_mpmath方法的具体用法？Python Number.from_mpmath怎么用？Python Number.from_mpmath使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类mathics.core.expression.Number的用法示例。
在下文中一共展示了Number.from_mpmath方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: apply
# 需要导入模块: from mathics.core.expression import Number [as 别名]
# 或者: from mathics.core.expression.Number import from_mpmath [as 别名]
def apply(self, z, evaluation):
'%(name)s[z__]'
args = z.numerify(evaluation).get_sequence()
mpmath_function = self.get_mpmath_function(args)
result = None
# if no arguments are inexact attempt to use sympy
if all(not x.is_inexact() for x in args):
result = Expression(self.get_name(), *args).to_sympy()
result = self.prepare_mathics(result)
result = from_sympy(result)
# evaluate leaves to convert e.g. Plus[2, I] -> Complex[2, 1]
return result.evaluate_leaves(evaluation)
elif mpmath_function is None:
return
if not all(isinstance(arg, Number) for arg in args):
return
if any(arg.is_machine_precision() for arg in args):
# if any argument has machine precision then the entire calculation
# is done with machine precision.
float_args = [arg.round().get_float_value(permit_complex=True) for arg in args]
if None in float_args:
return
result = self.call_mpmath(mpmath_function, float_args)
if isinstance(result, (mpmath.mpc, mpmath.mpf)):
if mpmath.isinf(result) and isinstance(result, mpmath.mpc):
result = Symbol('ComplexInfinity')
elif mpmath.isinf(result) and result > 0:
result = Expression('DirectedInfinity', Integer(1))
elif mpmath.isinf(result) and result < 0:
result = Expression('DirectedInfinity', Integer(-1))
elif mpmath.isnan(result):
result = Symbol('Indeterminate')
else:
result = Number.from_mpmath(result)
else:
prec = min_prec(*args)
d = dps(prec)
args = [Expression('N', arg, Integer(d)).evaluate(evaluation) for arg in args]
with mpmath.workprec(prec):
mpmath_args = [x.to_mpmath() for x in args]
if None in mpmath_args:
return
result = self.call_mpmath(mpmath_function, mpmath_args)
if isinstance(result, (mpmath.mpc, mpmath.mpf)):
result = Number.from_mpmath(result, d)
return result示例2: apply_N
# 需要导入模块: from mathics.core.expression import Number [as 别名]
# 或者: from mathics.core.expression.Number import from_mpmath [as 别名]
def apply_N(self, k, precision, evaluation):
'N[AiryBiZero[k_Integer], precision_]'
try:
d = get_precision(precision, evaluation)
except PrecisionValueError:
return
if d is None:
p = machine_precision
else:
p = _prec(d)
k_int = k.get_int_value()
with mpmath.workprec(p):
result = mpmath.airybizero(k_int)
return Number.from_mpmath(result, d)