Python dup_isolate_all_roots示例

示例#1

文件： test_rootisolation.py 项目： 101man/sympy

def test_dup_isolate_all_roots():
    f = [4, -1, 2, 5, 0]

    assert dup_isolate_all_roots(f, ZZ) == \
        ([((-1, 0), 1), ((0, 0), 1)], [(((0, -QQ(5,2)), (QQ(5,2), 0)), 1), (((0, 0), (QQ(5,2), QQ(5,2))), 1)])

    assert dup_isolate_all_roots(f, ZZ, eps=QQ(1,10)) == \
        ([((QQ(-7,8), QQ(-6,7)), 1), ((0, 0), 1)], [(((QQ(35,64), -QQ(35,32)), (QQ(5,8), -QQ(65,64))), 1), (((QQ(35,64), QQ(65,64)), (QQ(5,8), QQ(35,32))), 1)])

    raises(NotImplementedError, "dup_isolate_all_roots([1, 1, -2, -2, 1, 1], ZZ)")

示例#2

文件： test_rootisolation.py 项目： vperic/sympy

def test_dup_isolate_all_roots():
    f = [4, -1, 2, 5, 0]

    assert dup_isolate_all_roots(f, ZZ) == \
        ([((-1, 0), 1), ((0, 0), 1)], [(((0, -QQ(5,2)), (QQ(5,2), 0)), 1), (((0, 0), (QQ(5,2), QQ(5,2))), 1)])

    assert dup_isolate_all_roots(f, ZZ, eps=QQ(1,10)) == \
        ([((QQ(-7,8), QQ(-6,7)), 1), ((0, 0), 1)], [(((QQ(35,64), -QQ(35,32)), (QQ(5,8), -QQ(65,64))), 1), (((QQ(35,64), QQ(65,64)), (QQ(5,8), QQ(35,32))), 1)])

    raises(NotImplementedError, lambda: dup_isolate_all_roots([1, 1, -2, -2, 1, 1], ZZ))

示例#3

文件： polyclasses.py 项目： fxkr/sympy

 def intervals(f, all=False, eps=None, inf=None, sup=None, fast=False, sqf=False):
     """Compute isolating intervals for roots of `f`. """
     if not f.lev:
         if not all:
             if not sqf:
                 return dup_isolate_real_roots(f.rep, f.dom, eps=eps, inf=inf, sup=sup, fast=fast)
             else:
                 return dup_isolate_real_roots_sqf(f.rep, f.dom, eps=eps, inf=inf, sup=sup, fast=fast)
         else:
             if not sqf:
                 return dup_isolate_all_roots(f.rep, f.dom, eps=eps, inf=inf, sup=sup, fast=fast)
             else:
                 return dup_isolate_all_roots_sqf(f.rep, f.dom, eps=eps, inf=inf, sup=sup, fast=fast)
     else:
         raise PolynomialError("can't isolate roots of a multivariate polynomial")

示例#4

 def intervals(f, all=False, eps=None, inf=None, sup=None, fast=False, sqf=False):
     """Compute isolating intervals for roots of `f`. """
     if not f.lev:
         if not all:
             if not sqf:
                 return dup_isolate_real_roots(f.rep, f.dom, eps=eps, inf=inf, sup=sup, fast=fast)
             else:
                 return dup_isolate_real_roots_sqf(f.rep, f.dom, eps=eps, inf=inf, sup=sup, fast=fast)
         else:
             if not sqf:
                 return dup_isolate_all_roots(f.rep, f.dom, eps=eps, inf=inf, sup=sup, fast=fast)
             else:
                 return dup_isolate_all_roots_sqf(f.rep, f.dom, eps=eps, inf=inf, sup=sup, fast=fast)
     else:
         raise PolynomialError("can't isolate roots of a multivariate polynomial")