本文整理汇总了Python中sympy.Integer.sqrt方法的典型用法代码示例。如果您正苦于以下问题：Python Integer.sqrt方法的具体用法？Python Integer.sqrt怎么用？Python Integer.sqrt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sympy.Integer的用法示例。
在下文中一共展示了Integer.sqrt方法的1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: _big_delta_coeff
# 需要导入模块: from sympy import Integer [as 别名]
# 或者: from sympy.Integer import sqrt [as 别名]
def _big_delta_coeff(aa, bb, cc, prec=None):
r"""
Calculates the Delta coefficient of the 3 angular momenta for
Racah symbols. Also checks that the differences are of integer
value.
INPUT:
- ``aa`` - first angular momentum, integer or half integer
- ``bb`` - second angular momentum, integer or half integer
- ``cc`` - third angular momentum, integer or half integer
- ``prec`` - precision of the ``sqrt()`` calculation
OUTPUT:
double - Value of the Delta coefficient
EXAMPLES::
sage: from sage.functions.wigner import _big_delta_coeff
sage: _big_delta_coeff(1,1,1)
1/2*sqrt(1/6)
"""
if int(aa + bb - cc) != (aa + bb - cc):
raise ValueError("j values must be integer or half integer and fulfill the triangle relation")
if int(aa + cc - bb) != (aa + cc - bb):
raise ValueError("j values must be integer or half integer and fulfill the triangle relation")
if int(bb + cc - aa) != (bb + cc - aa):
raise ValueError("j values must be integer or half integer and fulfill the triangle relation")
if (aa + bb - cc) < 0:
return 0
if (aa + cc - bb) < 0:
return 0
if (bb + cc - aa) < 0:
return 0
maxfact = max(aa + bb - cc, aa + cc - bb, bb + cc - aa, aa + bb + cc + 1)
_calc_factlist(maxfact)
argsqrt = Integer(_Factlist[int(aa + bb - cc)] * \
_Factlist[int(aa + cc - bb)] * \
_Factlist[int(bb + cc - aa)]) / \
Integer(_Factlist[int(aa + bb + cc + 1)])
ressqrt = argsqrt.sqrt(prec)
if type(ressqrt) is ComplexNumber:
res = ressqrt.real()
else:
res = ressqrt
return res