Python sympy.uppergamma函数代码示例

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本文整理汇总了Python中sympy.uppergamma函数的典型用法代码示例。如果您正苦于以下问题：Python uppergamma函数的具体用法？Python uppergamma怎么用？Python uppergamma使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了uppergamma函数的20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，您的评价将有助于我们的系统推荐出更棒的Python代码示例。

示例1: test_lowergamma

def test_lowergamma():
    from sympy import meijerg, exp_polar, I, expint
    assert lowergamma(x, y).diff(y) == y**(x-1)*exp(-y)
    assert td(lowergamma(randcplx(), y), y)
    assert lowergamma(x, y).diff(x) == \
           gamma(x)*polygamma(0, x) - uppergamma(x, y)*log(y) \
           + meijerg([], [1, 1], [0, 0, x], [], y)

    assert lowergamma(S.Half, x) == sqrt(pi)*erf(sqrt(x))
    assert not lowergamma(S.Half - 3, x).has(lowergamma)
    assert not lowergamma(S.Half + 3, x).has(lowergamma)
    assert lowergamma(S.Half, x, evaluate=False).has(lowergamma)
    assert tn(lowergamma(S.Half + 3, x, evaluate=False),
              lowergamma(S.Half + 3, x), x)
    assert tn(lowergamma(S.Half - 3, x, evaluate=False),
              lowergamma(S.Half - 3, x), x)

    assert lowergamma(x, y).rewrite(uppergamma) == gamma(x) - uppergamma(x, y)

    assert tn_branch(-3, lowergamma)
    assert tn_branch(-4, lowergamma)
    assert tn_branch(S(1)/3, lowergamma)
    assert tn_branch(pi, lowergamma)
    assert lowergamma(3, exp_polar(4*pi*I)*x) == lowergamma(3, x)
    assert lowergamma(y, exp_polar(5*pi*I)*x) == \
           exp(4*I*pi*y)*lowergamma(y, x*exp_polar(pi*I))
    assert lowergamma(-2, exp_polar(5*pi*I)*x) == \
           lowergamma(-2, x*exp_polar(I*pi)) + 2*pi*I

    assert lowergamma(x, y).rewrite(expint) == -y**x*expint(-x + 1, y) + gamma(x)
    k = Symbol('k', integer=True)
    assert lowergamma(k, y).rewrite(expint) == -y**k*expint(-k + 1, y) + gamma(k)
    k = Symbol('k', integer=True, positive=False)
    assert lowergamma(k, y).rewrite(expint) == lowergamma(k, y)

开发者ID:BDGLunde，项目名称:sympy，代码行数:34，代码来源:test_gamma_functions.py

示例2: test_meijerg_lookup

def test_meijerg_lookup():
    from sympy import uppergamma
    assert hyperexpand(meijerg([a], [], [b, a], [], z)) == \
           z**b*exp(z)*gamma(-a + b + 1)*uppergamma(a - b, z)
    assert hyperexpand(meijerg([0], [], [0, 0], [], z)) == \
           exp(z)*uppergamma(0, z)
    assert can_do_meijer([a], [], [b, a+1], [])
    assert can_do_meijer([a], [], [b+2, a], [])
    assert can_do_meijer([a], [], [b-2, a], [])

开发者ID:ALGHeArT，项目名称:sympy，代码行数:9，代码来源:test_hyperexpand.py

示例3: test_hyper

def test_hyper():
    for x in sorted(exparg):
        test("erf", x, N(sp.erf(x)))
    for x in sorted(exparg):
        test("erfc", x, N(sp.erfc(x)))

    gamarg = FiniteSet(*(x+S(1)/12 for x in exparg))
    betarg = ProductSet(gamarg, gamarg)
    for x in sorted(gamarg):
        test("lgamma", x, N(sp.log(abs(sp.gamma(x)))))
    for x in sorted(gamarg):
        test("gamma", x, N(sp.gamma(x)))
    for x, y in sorted(betarg, key=lambda (x, y): (y, x)):
        test("beta", x, y, N(sp.beta(x, y)))

    pgamarg = FiniteSet(S(1)/12, S(1)/3, S(3)/2, 5)
    pgamargp = ProductSet(gamarg & Interval(0, oo, True), pgamarg)
    for a, x in sorted(pgamargp):
        test("pgamma", a, x, N(sp.lowergamma(a, x)))
    for a, x in sorted(pgamargp):
        test("pgammac", a, x, N(sp.uppergamma(a, x)))
    for a, x in sorted(pgamargp):
        test("pgammar", a, x, N(sp.lowergamma(a, x)/sp.gamma(a)))
    for a, x in sorted(pgamargp):
        test("pgammarc", a, x, N(sp.uppergamma(a, x)/sp.gamma(a)))
    for a, x in sorted(pgamargp):
        test("ipgammarc", a, N(sp.uppergamma(a, x)/sp.gamma(a)), x)

    pbetargp = [(a, b, x) for a, b, x in ProductSet(betarg, pgamarg)
                if a > 0 and b > 0 and x < 1]
    pbetargp.sort(key=lambda (a, b, x): (b, a, x))
    for a, b, x in pbetargp:
        test("pbeta", a, b, x, mp.betainc(mpf(a), mpf(b), x2=mpf(x)))
    for a, b, x in pbetargp:
        test("pbetar", a, b, x, mp.betainc(mpf(a), mpf(b), x2=mpf(x),
                                           regularized=True))
    for a, b, x in pbetargp:
        test("ipbetar", a, b, mp.betainc(mpf(a), mpf(b), x2=mpf(x),
                                         regularized=True), x)

    for x in sorted(posarg):
        test("j0", x, N(sp.besselj(0, x)))
    for x in sorted(posarg):
        test("j1", x, N(sp.besselj(1, x)))
    for x in sorted(posarg-FiniteSet(0)):
        test("y0", x, N(sp.bessely(0, x)))
    for x in sorted(posarg-FiniteSet(0)):
        test("y1", x, N(sp.bessely(1, x)))

开发者ID:zholos，项目名称:qml，代码行数:48，代码来源:libm.py

示例4: test_ei

def test_ei():
    pos = Symbol('p', positive=True)
    neg = Symbol('n', negative=True)
    assert Ei(-pos) == Ei(polar_lift(-1)*pos) - I*pi
    assert Ei(neg) == Ei(polar_lift(neg)) - I*pi
    assert tn_branch(Ei)
    assert mytd(Ei(x), exp(x)/x, x)
    assert mytn(Ei(x), Ei(x).rewrite(uppergamma),
                -uppergamma(0, x*polar_lift(-1)) - I*pi, x)
    assert mytn(Ei(x), Ei(x).rewrite(expint),
                -expint(1, x*polar_lift(-1)) - I*pi, x)
    assert Ei(x).rewrite(expint).rewrite(Ei) == Ei(x)
    assert Ei(x*exp_polar(2*I*pi)) == Ei(x) + 2*I*pi
    assert Ei(x*exp_polar(-2*I*pi)) == Ei(x) - 2*I*pi

    assert mytn(Ei(x), Ei(x).rewrite(Shi), Chi(x) + Shi(x), x)
    assert mytn(Ei(x*polar_lift(I)), Ei(x*polar_lift(I)).rewrite(Si),
                Ci(x) + I*Si(x) + I*pi/2, x)

    assert Ei(log(x)).rewrite(li) == li(x)
    assert Ei(2*log(x)).rewrite(li) == li(x**2)

    assert gruntz(Ei(x+exp(-x))*exp(-x)*x, x, oo) == 1

    assert Ei(x).series(x) == EulerGamma + log(x) + x + x**2/4 + \
        x**3/18 + x**4/96 + x**5/600 + O(x**6)

开发者ID:A-turing-machine，项目名称:sympy，代码行数:26，代码来源:test_error_functions.py

示例5: test_manualintegrate_special

def test_manualintegrate_special():
    f, F = 4*exp(-x**2/3), 2*sqrt(3)*sqrt(pi)*erf(sqrt(3)*x/3)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = 3*exp(4*x**2), 3*sqrt(pi)*erfi(2*x)/4
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = x**(S(1)/3)*exp(-x/8), -16*uppergamma(S(4)/3, x/8)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = exp(2*x)/x, Ei(2*x)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = exp(1 + 2*x - x**2), sqrt(pi)*exp(2)*erf(x - 1)/2
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f = sin(x**2 + 4*x + 1)
    F = (sqrt(2)*sqrt(pi)*(-sin(3)*fresnelc(sqrt(2)*(2*x + 4)/(2*sqrt(pi))) +
        cos(3)*fresnels(sqrt(2)*(2*x + 4)/(2*sqrt(pi))))/2)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = cos(4*x**2), sqrt(2)*sqrt(pi)*fresnelc(2*sqrt(2)*x/sqrt(pi))/4
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = sin(3*x + 2)/x, sin(2)*Ci(3*x) + cos(2)*Si(3*x)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = sinh(3*x - 2)/x, -sinh(2)*Chi(3*x) + cosh(2)*Shi(3*x)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = 5*cos(2*x - 3)/x, 5*cos(3)*Ci(2*x) + 5*sin(3)*Si(2*x)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = cosh(x/2)/x, Chi(x/2)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = cos(x**2)/x, Ci(x**2)/2
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = 1/log(2*x + 1), li(2*x + 1)/2
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = polylog(2, 5*x)/x, polylog(3, 5*x)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = 5/sqrt(3 - 2*sin(x)**2), 5*sqrt(3)*elliptic_f(x, S(2)/3)/3
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)
    f, F = sqrt(4 + 9*sin(x)**2), 2*elliptic_e(x, -S(9)/4)
    assert manualintegrate(f, x) == F and F.diff(x).equals(f)

开发者ID:gamechanger98，项目名称:sympy，代码行数:35，代码来源:test_manual.py

示例6: test_expint

def test_expint():
    assert mytn(expint(x, y), expint(x, y).rewrite(uppergamma), y ** (x - 1) * uppergamma(1 - x, y), x)
    assert mytd(expint(x, y), -y ** (x - 1) * meijerg([], [1, 1], [0, 0, 1 - x], [], y), x)
    assert mytd(expint(x, y), -expint(x - 1, y), y)
    assert mytn(expint(1, x), expint(1, x).rewrite(Ei), -Ei(x * polar_lift(-1)) + I * pi, x)

    assert (
        expint(-4, x)
        == exp(-x) / x + 4 * exp(-x) / x ** 2 + 12 * exp(-x) / x ** 3 + 24 * exp(-x) / x ** 4 + 24 * exp(-x) / x ** 5
    )
    assert expint(-S(3) / 2, x) == exp(-x) / x + 3 * exp(-x) / (2 * x ** 2) - 3 * sqrt(pi) * erf(sqrt(x)) / (
        4 * x ** S("5/2")
    ) + 3 * sqrt(pi) / (4 * x ** S("5/2"))

    assert tn_branch(expint, 1)
    assert tn_branch(expint, 2)
    assert tn_branch(expint, 3)
    assert tn_branch(expint, 1.7)
    assert tn_branch(expint, pi)

    assert expint(y, x * exp_polar(2 * I * pi)) == x ** (y - 1) * (exp(2 * I * pi * y) - 1) * gamma(-y + 1) + expint(
        y, x
    )
    assert expint(y, x * exp_polar(-2 * I * pi)) == x ** (y - 1) * (exp(-2 * I * pi * y) - 1) * gamma(-y + 1) + expint(
        y, x
    )
    assert expint(2, x * exp_polar(2 * I * pi)) == 2 * I * pi * x + expint(2, x)
    assert expint(2, x * exp_polar(-2 * I * pi)) == -2 * I * pi * x + expint(2, x)
    assert expint(1, x).rewrite(Ei).rewrite(expint) == expint(1, x)

    assert mytn(E1(x), E1(x).rewrite(Shi), Shi(x) - Chi(x), x)
    assert mytn(E1(polar_lift(I) * x), E1(polar_lift(I) * x).rewrite(Si), -Ci(x) + I * Si(x) - I * pi / 2, x)

    assert mytn(expint(2, x), expint(2, x).rewrite(Ei).rewrite(expint), -x * E1(x) + exp(-x), x)
    assert mytn(expint(3, x), expint(3, x).rewrite(Ei).rewrite(expint), x ** 2 * E1(x) / 2 + (1 - x) * exp(-x) / 2, x)

开发者ID:hector1618，项目名称:sympy，代码行数:35，代码来源:test_error_functions.py

示例7: test_meijerg_lookup

def test_meijerg_lookup():
    from sympy import uppergamma, Si, Ci
    assert hyperexpand(meijerg([a], [], [b, a], [], z)) == \
        z**b*exp(z)*gamma(-a + b + 1)*uppergamma(a - b, z)
    assert hyperexpand(meijerg([0], [], [0, 0], [], z)) == \
        exp(z)*uppergamma(0, z)
    assert can_do_meijer([a], [], [b, a + 1], [])
    assert can_do_meijer([a], [], [b + 2, a], [])
    assert can_do_meijer([a], [], [b - 2, a], [])

    assert hyperexpand(meijerg([a], [], [a, a, a - S(1)/2], [], z)) == \
        -sqrt(pi)*z**(a - S(1)/2)*(2*cos(2*sqrt(z))*(Si(2*sqrt(z)) - pi/2)
                                   - 2*sin(2*sqrt(z))*Ci(2*sqrt(z))) == \
        hyperexpand(meijerg([a], [], [a, a - S(1)/2, a], [], z)) == \
        hyperexpand(meijerg([a], [], [a - S(1)/2, a, a], [], z))
    assert can_do_meijer([a - 1], [], [a + 2, a - S(3)/2, a + 1], [])

开发者ID:vprusso，项目名称:sympy，代码行数:16，代码来源:test_hyperexpand.py

示例8: test_lowergamma

def test_lowergamma():
    from sympy import meijerg, exp_polar, I, expint
    assert lowergamma(x, 0) == 0
    assert lowergamma(x, y).diff(y) == y**(x - 1)*exp(-y)
    assert td(lowergamma(randcplx(), y), y)
    assert td(lowergamma(x, randcplx()), x)
    assert lowergamma(x, y).diff(x) == \
        gamma(x)*polygamma(0, x) - uppergamma(x, y)*log(y) \
        - meijerg([], [1, 1], [0, 0, x], [], y)

    assert lowergamma(S.Half, x) == sqrt(pi)*erf(sqrt(x))
    assert not lowergamma(S.Half - 3, x).has(lowergamma)
    assert not lowergamma(S.Half + 3, x).has(lowergamma)
    assert lowergamma(S.Half, x, evaluate=False).has(lowergamma)
    assert tn(lowergamma(S.Half + 3, x, evaluate=False),
              lowergamma(S.Half + 3, x), x)
    assert tn(lowergamma(S.Half - 3, x, evaluate=False),
              lowergamma(S.Half - 3, x), x)

    assert tn_branch(-3, lowergamma)
    assert tn_branch(-4, lowergamma)
    assert tn_branch(S(1)/3, lowergamma)
    assert tn_branch(pi, lowergamma)
    assert lowergamma(3, exp_polar(4*pi*I)*x) == lowergamma(3, x)
    assert lowergamma(y, exp_polar(5*pi*I)*x) == \
        exp(4*I*pi*y)*lowergamma(y, x*exp_polar(pi*I))
    assert lowergamma(-2, exp_polar(5*pi*I)*x) == \
        lowergamma(-2, x*exp_polar(I*pi)) + 2*pi*I

    assert conjugate(lowergamma(x, y)) == lowergamma(conjugate(x), conjugate(y))
    assert conjugate(lowergamma(x, 0)) == conjugate(lowergamma(x, 0))
    assert conjugate(lowergamma(x, -oo)) == conjugate(lowergamma(x, -oo))

    assert lowergamma(
        x, y).rewrite(expint) == -y**x*expint(-x + 1, y) + gamma(x)
    k = Symbol('k', integer=True)
    assert lowergamma(
        k, y).rewrite(expint) == -y**k*expint(-k + 1, y) + gamma(k)
    k = Symbol('k', integer=True, positive=False)
    assert lowergamma(k, y).rewrite(expint) == lowergamma(k, y)
    assert lowergamma(x, y).rewrite(uppergamma) == gamma(x) - uppergamma(x, y)

    assert lowergamma(70, 6) == factorial(69) - 69035724522603011058660187038367026272747334489677105069435923032634389419656200387949342530805432320 * exp(-6)
    assert (lowergamma(S(77) / 2, 6) - lowergamma(S(77) / 2, 6, evaluate=False)).evalf() < 1e-16
    assert (lowergamma(-S(77) / 2, 6) - lowergamma(-S(77) / 2, 6, evaluate=False)).evalf() < 1e-16

开发者ID:carstimon，项目名称:sympy，代码行数:45，代码来源:test_gamma_functions.py

示例9: test_lowergamma

def test_lowergamma():
    from sympy import meijerg
    assert lowergamma(x, y).diff(y) == y**(x-1)*exp(-y)
    assert td(lowergamma(randcplx(), y), y)
    assert lowergamma(x, y).diff(x) == \
           gamma(x)*polygamma(0, x) - uppergamma(x, y)*log(y) \
           + meijerg([], [1, 1], [0, 0, x], [], y)

    assert lowergamma(S.Half, x) == sqrt(pi)*erf(sqrt(x))
    assert not lowergamma(S.Half - 3, x).has(lowergamma)
    assert not lowergamma(S.Half + 3, x).has(lowergamma)
    assert lowergamma(S.Half, x, evaluate=False).has(lowergamma)
    assert tn(lowergamma(S.Half + 3, x, evaluate=False),
              lowergamma(S.Half + 3, x), x)
    assert tn(lowergamma(S.Half - 3, x, evaluate=False),
              lowergamma(S.Half - 3, x), x)

    assert lowergamma(x, y).rewrite(uppergamma) == gamma(x) - uppergamma(x, y)

开发者ID:101man，项目名称:sympy，代码行数:18，代码来源:test_gamma_functions.py

示例10: test_latex_functions

def test_latex_functions():
    assert latex(exp(x)) == "e^{x}"
    assert latex(exp(1)+exp(2)) == "e + e^{2}"

    f = Function('f')
    assert latex(f(x)) == '\\operatorname{f}{\\left (x \\right )}'

    beta = Function('beta')

    assert latex(beta(x)) == r"\beta{\left (x \right )}"
    assert latex(sin(x)) == r"\sin{\left (x \right )}"
    assert latex(sin(x), fold_func_brackets=True) == r"\sin {x}"
    assert latex(sin(2*x**2), fold_func_brackets=True) == \
    r"\sin {2 x^{2}}"
    assert latex(sin(x**2), fold_func_brackets=True) == \
    r"\sin {x^{2}}"

    assert latex(asin(x)**2) == r"\operatorname{asin}^{2}{\left (x \right )}"
    assert latex(asin(x)**2,inv_trig_style="full") == \
        r"\arcsin^{2}{\left (x \right )}"
    assert latex(asin(x)**2,inv_trig_style="power") == \
        r"\sin^{-1}{\left (x \right )}^{2}"
    assert latex(asin(x**2),inv_trig_style="power",fold_func_brackets=True) == \
        r"\sin^{-1} {x^{2}}"

    assert latex(factorial(k)) == r"k!"
    assert latex(factorial(-k)) == r"\left(- k\right)!"

    assert latex(factorial2(k)) == r"k!!"
    assert latex(factorial2(-k)) == r"\left(- k\right)!!"

    assert latex(binomial(2,k)) == r"{\binom{2}{k}}"

    assert latex(FallingFactorial(3,k)) == r"{\left(3\right)}_{\left(k\right)}"
    assert latex(RisingFactorial(3,k)) == r"{\left(3\right)}^{\left(k\right)}"

    assert latex(floor(x)) == r"\lfloor{x}\rfloor"
    assert latex(ceiling(x)) == r"\lceil{x}\rceil"
    assert latex(Abs(x)) == r"\lvert{x}\rvert"
    assert latex(re(x)) == r"\Re{x}"
    assert latex(re(x+y)) == r"\Re {\left (x + y \right )}"
    assert latex(im(x)) == r"\Im{x}"
    assert latex(conjugate(x)) == r"\overline{x}"
    assert latex(gamma(x)) == r"\Gamma\left(x\right)"
    assert latex(Order(x)) == r"\mathcal{O}\left(x\right)"
    assert latex(lowergamma(x, y)) == r'\gamma\left(x, y\right)'
    assert latex(uppergamma(x, y)) == r'\Gamma\left(x, y\right)'

    assert latex(cot(x)) == r'\cot{\left (x \right )}'
    assert latex(coth(x)) == r'\coth{\left (x \right )}'
    assert latex(re(x)) == r'\Re{x}'
    assert latex(im(x)) == r'\Im{x}'
    assert latex(root(x,y)) == r'x^{\frac{1}{y}}'
    assert latex(arg(x)) == r'\arg{\left (x \right )}'
    assert latex(zeta(x)) == r'\zeta{\left (x \right )}'

开发者ID:songuke，项目名称:sympy，代码行数:55，代码来源:test_latex.py

示例11: testGamma

 def testGamma(self):
     self.compare(
         mathics.Expression('Gamma', mathics.Symbol('Global`z')),
         sympy.gamma(sympy.Symbol('_Mathics_User_Global`z')))
     self.compare(
         mathics.Expression(
             'Gamma',
             mathics.Symbol('Global`z'),
             mathics.Symbol('Global`x')),
         sympy.uppergamma(
             sympy.Symbol('_Mathics_User_Global`z'),
             sympy.Symbol('_Mathics_User_Global`x')))

开发者ID:Piruzzolo，项目名称:Mathics，代码行数:12，代码来源:test_convert.py

示例12: test_ei

def test_ei():
    pos = Symbol("p", positive=True)
    neg = Symbol("n", negative=True)
    assert Ei(-pos) == Ei(polar_lift(-1) * pos) - I * pi
    assert Ei(neg) == Ei(polar_lift(neg)) - I * pi
    assert tn_branch(Ei)
    assert mytd(Ei(x), exp(x) / x, x)
    assert mytn(Ei(x), Ei(x).rewrite(uppergamma), -uppergamma(0, x * polar_lift(-1)) - I * pi, x)
    assert mytn(Ei(x), Ei(x).rewrite(expint), -expint(1, x * polar_lift(-1)) - I * pi, x)
    assert Ei(x).rewrite(expint).rewrite(Ei) == Ei(x)
    assert Ei(x * exp_polar(2 * I * pi)) == Ei(x) + 2 * I * pi
    assert Ei(x * exp_polar(-2 * I * pi)) == Ei(x) - 2 * I * pi

    assert mytn(Ei(x), Ei(x).rewrite(Shi), Chi(x) + Shi(x), x)
    assert mytn(Ei(x * polar_lift(I)), Ei(x * polar_lift(I)).rewrite(Si), Ci(x) + I * Si(x) + I * pi / 2, x)

开发者ID:hector1618，项目名称:sympy，代码行数:15，代码来源:test_error_functions.py

示例13: test_expint

def test_expint():
    assert mytn(expint(x, y), expint(x, y).rewrite(uppergamma),
                y**(x - 1)*uppergamma(1 - x, y), x)
    assert mytd(
        expint(x, y), -y**(x - 1)*meijerg([], [1, 1], [0, 0, 1 - x], [], y), x)
    assert mytd(expint(x, y), -expint(x - 1, y), y)
    assert mytn(expint(1, x), expint(1, x).rewrite(Ei),
                -Ei(x*polar_lift(-1)) + I*pi, x)

    assert expint(-4, x) == exp(-x)/x + 4*exp(-x)/x**2 + 12*exp(-x)/x**3 \
        + 24*exp(-x)/x**4 + 24*exp(-x)/x**5
    assert expint(-S(3)/2, x) == \
        exp(-x)/x + 3*exp(-x)/(2*x**2) - 3*sqrt(pi)*erf(sqrt(x))/(4*x**S('5/2')) \
        + 3*sqrt(pi)/(4*x**S('5/2'))

    assert tn_branch(expint, 1)
    assert tn_branch(expint, 2)
    assert tn_branch(expint, 3)
    assert tn_branch(expint, 1.7)
    assert tn_branch(expint, pi)

    assert expint(y, x*exp_polar(2*I*pi)) == \
        x**(y - 1)*(exp(2*I*pi*y) - 1)*gamma(-y + 1) + expint(y, x)
    assert expint(y, x*exp_polar(-2*I*pi)) == \
        x**(y - 1)*(exp(-2*I*pi*y) - 1)*gamma(-y + 1) + expint(y, x)
    assert expint(2, x*exp_polar(2*I*pi)) == 2*I*pi*x + expint(2, x)
    assert expint(2, x*exp_polar(-2*I*pi)) == -2*I*pi*x + expint(2, x)
    assert expint(1, x).rewrite(Ei).rewrite(expint) == expint(1, x)

    assert mytn(E1(x), E1(x).rewrite(Shi), Shi(x) - Chi(x), x)
    assert mytn(E1(polar_lift(I)*x), E1(polar_lift(I)*x).rewrite(Si),
                -Ci(x) + I*Si(x) - I*pi/2, x)

    assert mytn(expint(2, x), expint(2, x).rewrite(Ei).rewrite(expint),
                -x*E1(x) + exp(-x), x)
    assert mytn(expint(3, x), expint(3, x).rewrite(Ei).rewrite(expint),
                x**2*E1(x)/2 + (1 - x)*exp(-x)/2, x)

    assert expint(S(3)/2, z).nseries(z) == \
        2 + 2*z - z**2/3 + z**3/15 - z**4/84 + z**5/540 - \
        2*sqrt(pi)*sqrt(z) + O(z**6)

    assert E1(z).series(z) == -EulerGamma - log(z) + z - \
        z**2/4 + z**3/18 - z**4/96 + z**5/600 + O(z**6)

    assert expint(4, z).series(z) == S(1)/3 - z/2 + z**2/2 + \
        z**3*(log(z)/6 - S(11)/36 + EulerGamma/6) - z**4/24 + \
        z**5/240 + O(z**6)

开发者ID:AdrianPotter，项目名称:sympy，代码行数:48，代码来源:test_error_functions.py

示例14: test_unpolarify

def test_unpolarify():
    from sympy import (exp_polar, polar_lift, exp, unpolarify,
                       principal_branch)
    from sympy import gamma, erf, sin, tanh, uppergamma, Eq, Ne
    from sympy.abc import x
    p = exp_polar(7*I) + 1
    u = exp(7*I) + 1

    assert unpolarify(1) == 1
    assert unpolarify(p) == u
    assert unpolarify(p**2) == u**2
    assert unpolarify(p**x) == p**x
    assert unpolarify(p*x) == u*x
    assert unpolarify(p + x) == u + x
    assert unpolarify(sqrt(sin(p))) == sqrt(sin(u))

    # Test reduction to principal branch 2*pi.
    t = principal_branch(x, 2*pi)
    assert unpolarify(t) == x
    assert unpolarify(sqrt(t)) == sqrt(t)

    # Test exponents_only.
    assert unpolarify(p**p, exponents_only=True) == p**u
    assert unpolarify(uppergamma(x, p**p)) == uppergamma(x, p**u)

    # Test functions.
    assert unpolarify(sin(p)) == sin(u)
    assert unpolarify(tanh(p)) == tanh(u)
    assert unpolarify(gamma(p)) == gamma(u)
    assert unpolarify(erf(p)) == erf(u)
    assert unpolarify(uppergamma(x, p)) == uppergamma(x, p)

    assert unpolarify(uppergamma(sin(p), sin(p + exp_polar(0)))) == \
        uppergamma(sin(u), sin(u + 1))
    assert unpolarify(uppergamma(polar_lift(0), 2*exp_polar(0))) == \
        uppergamma(0, 2)

    assert unpolarify(Eq(p, 0)) == Eq(u, 0)
    assert unpolarify(Ne(p, 0)) == Ne(u, 0)
    assert unpolarify(polar_lift(x) > 0) == (x > 0)

    # Test bools
    assert unpolarify(True) is True

开发者ID:A-turing-machine，项目名称:sympy，代码行数:43，代码来源:test_complexes.py

示例15: test_erfi

def test_erfi():
    assert erfi(nan) == nan

    assert erfi(oo) == S.Infinity
    assert erfi(-oo) == S.NegativeInfinity

    assert erfi(0) == S.Zero

    assert erfi(I*oo) == I
    assert erfi(-I*oo) == -I

    assert erfi(-x) == -erfi(x)

    assert erfi(I*erfinv(x)) == I*x
    assert erfi(I*erfcinv(x)) == I*(1 - x)
    assert erfi(I*erf2inv(0, x)) == I*x

    assert erfi(I).is_real is False
    assert erfi(0).is_real is True

    assert conjugate(erfi(z)) == erfi(conjugate(z))

    assert erfi(z).rewrite('erf') == -I*erf(I*z)
    assert erfi(z).rewrite('erfc') == I*erfc(I*z) - I
    assert erfi(z).rewrite('fresnels') == (1 - I)*(fresnelc(z*(1 + I)/sqrt(pi)) -
        I*fresnels(z*(1 + I)/sqrt(pi)))
    assert erfi(z).rewrite('fresnelc') == (1 - I)*(fresnelc(z*(1 + I)/sqrt(pi)) -
        I*fresnels(z*(1 + I)/sqrt(pi)))
    assert erfi(z).rewrite('hyper') == 2*z*hyper([S.Half], [3*S.Half], z**2)/sqrt(pi)
    assert erfi(z).rewrite('meijerg') == z*meijerg([S.Half], [], [0], [-S.Half], -z**2)/sqrt(pi)
    assert erfi(z).rewrite('uppergamma') == (sqrt(-z**2)/z*(uppergamma(S.Half,
        -z**2)/sqrt(S.Pi) - S.One))
    assert erfi(z).rewrite('expint') == sqrt(-z**2)/z - z*expint(S.Half, -z**2)/sqrt(S.Pi)
    assert expand_func(erfi(I*z)) == I*erf(z)

    assert erfi(x).as_real_imag() == \
        ((erfi(re(x) - I*re(x)*Abs(im(x))/Abs(re(x)))/2 +
         erfi(re(x) + I*re(x)*Abs(im(x))/Abs(re(x)))/2,
         I*(erfi(re(x) - I*re(x)*Abs(im(x))/Abs(re(x))) -
         erfi(re(x) + I*re(x)*Abs(im(x))/Abs(re(x)))) *
         re(x)*Abs(im(x))/(2*im(x)*Abs(re(x)))))

    raises(ArgumentIndexError, lambda: erfi(x).fdiff(2))

开发者ID:KonstantinTogoi，项目名称:sympy，代码行数:43，代码来源:test_error_functions.py

示例16: eval

    def eval(cls, nu, z):
        from sympy import unpolarify, expand_mul, uppergamma, exp, gamma, factorial

        nu2 = unpolarify(nu)
        if nu != nu2:
            return expint(nu2, z)
        if nu.is_Integer and nu <= 0 or (not nu.is_Integer and (2 * nu).is_Integer):
            return unpolarify(expand_mul(z ** (nu - 1) * uppergamma(1 - nu, z)))

        # Extract branching information. This can be deduced from what is
        # explained in lowergamma.eval().
        z, n = z.extract_branch_factor()
        if n == 0:
            return
        if nu.is_integer:
            if (nu > 0) is not True:
                return
            return expint(nu, z) - 2 * pi * I * n * (-1) ** (nu - 1) / factorial(nu - 1) * unpolarify(z) ** (nu - 1)
        else:
            return (exp(2 * I * pi * nu * n) - 1) * z ** (nu - 1) * gamma(1 - nu) + expint(nu, z)

开发者ID:ness01，项目名称:sympy，代码行数:20，代码来源:error_functions.py

示例17: test_latex_functions

def test_latex_functions():
    assert latex(exp(x)) == "e^{x}"
    assert latex(exp(1)+exp(2)) == "e + e^{2}"

    f = Function('f')
    assert latex(f(x)) == '\\operatorname{f}\\left(x\\right)'

    beta = Function('beta')

    assert latex(beta(x)) == r"\operatorname{beta}\left(x\right)"
    assert latex(sin(x)) == r"\operatorname{sin}\left(x\right)"
    assert latex(sin(x), fold_func_brackets=True) == r"\operatorname{sin}x"
    assert latex(sin(2*x**2), fold_func_brackets=True) == \
    r"\operatorname{sin}2 x^{2}"
    assert latex(sin(x**2), fold_func_brackets=True) == \
    r"\operatorname{sin}x^{2}"

    assert latex(asin(x)**2) == r"\operatorname{asin}^{2}\left(x\right)"
    assert latex(asin(x)**2,inv_trig_style="full") == \
        r"\operatorname{arcsin}^{2}\left(x\right)"
    assert latex(asin(x)**2,inv_trig_style="power") == \
        r"\operatorname{sin}^{-1}\left(x\right)^{2}"
    assert latex(asin(x**2),inv_trig_style="power",fold_func_brackets=True) == \
        r"\operatorname{sin}^{-1}x^{2}"

    assert latex(factorial(k)) == r"k!"
    assert latex(factorial(-k)) == r"\left(- k\right)!"

    assert latex(floor(x)) == r"\lfloor{x}\rfloor"
    assert latex(ceiling(x)) == r"\lceil{x}\rceil"
    assert latex(Abs(x)) == r"\lvert{x}\rvert"
    assert latex(re(x)) == r"\Re{x}"
    assert latex(im(x)) == r"\Im{x}"
    assert latex(conjugate(x)) == r"\overline{x}"
    assert latex(gamma(x)) == r"\operatorname{\Gamma}\left(x\right)"
    assert latex(Order(x)) == r"\operatorname{\mathcal{O}}\left(x\right)"
    assert latex(lowergamma(x, y)) == r'\operatorname{\gamma}\left(x, y\right)'
    assert latex(uppergamma(x, y)) == r'\operatorname{\Gamma}\left(x, y\right)'

开发者ID:qmattpap，项目名称:sympy，代码行数:38，代码来源:test_latex.py

示例18: test_ei

def test_ei():
    assert tn_branch(Ei)
    assert mytd(Ei(x), exp(x)/x, x)
    assert mytn(Ei(x), Ei(x).rewrite(uppergamma),
                -uppergamma(0, x*polar_lift(-1)) - I*pi, x)
    assert mytn(Ei(x), Ei(x).rewrite(expint),
                -expint(1, x*polar_lift(-1)) - I*pi, x)
    assert Ei(x).rewrite(expint).rewrite(Ei) == Ei(x)
    assert Ei(x*exp_polar(2*I*pi)) == Ei(x) + 2*I*pi
    assert Ei(x*exp_polar(-2*I*pi)) == Ei(x) - 2*I*pi

    assert mytn(Ei(x), Ei(x).rewrite(Shi), Chi(x) + Shi(x), x)
    assert mytn(Ei(x*polar_lift(I)), Ei(x*polar_lift(I)).rewrite(Si),
                Ci(x) + I*Si(x) + I*pi/2, x)

    assert Ei(log(x)).rewrite(li) == li(x)
    assert Ei(2*log(x)).rewrite(li) == li(x**2)

    assert gruntz(Ei(x+exp(-x))*exp(-x)*x, x, oo) == 1

    assert Ei(x).series(x) == EulerGamma + log(x) + x + x**2/4 + \
        x**3/18 + x**4/96 + x**5/600 + O(x**6)

    assert str(Ei(cos(2)).evalf(n=10)) == '-0.6760647401'

开发者ID:KonstantinTogoi，项目名称:sympy，代码行数:24，代码来源:test_error_functions.py

示例19: test_latex_functions

def test_latex_functions():
    assert latex(exp(x)) == "e^{x}"
    assert latex(exp(1) + exp(2)) == "e + e^{2}"

    f = Function("f")
    assert latex(f(x)) == "\\operatorname{f}{\\left (x \\right )}"

    beta = Function("beta")

    assert latex(beta(x)) == r"\beta{\left (x \right )}"
    assert latex(sin(x)) == r"\sin{\left (x \right )}"
    assert latex(sin(x), fold_func_brackets=True) == r"\sin {x}"
    assert latex(sin(2 * x ** 2), fold_func_brackets=True) == r"\sin {2 x^{2}}"
    assert latex(sin(x ** 2), fold_func_brackets=True) == r"\sin {x^{2}}"

    assert latex(asin(x) ** 2) == r"\operatorname{asin}^{2}{\left (x \right )}"
    assert latex(asin(x) ** 2, inv_trig_style="full") == r"\arcsin^{2}{\left (x \right )}"
    assert latex(asin(x) ** 2, inv_trig_style="power") == r"\sin^{-1}{\left (x \right )}^{2}"
    assert latex(asin(x ** 2), inv_trig_style="power", fold_func_brackets=True) == r"\sin^{-1} {x^{2}}"

    assert latex(factorial(k)) == r"k!"
    assert latex(factorial(-k)) == r"\left(- k\right)!"

    assert latex(subfactorial(k)) == r"!k"
    assert latex(subfactorial(-k)) == r"!\left(- k\right)"

    assert latex(factorial2(k)) == r"k!!"
    assert latex(factorial2(-k)) == r"\left(- k\right)!!"

    assert latex(binomial(2, k)) == r"{\binom{2}{k}}"

    assert latex(FallingFactorial(3, k)) == r"{\left(3\right)}_{\left(k\right)}"
    assert latex(RisingFactorial(3, k)) == r"{\left(3\right)}^{\left(k\right)}"

    assert latex(floor(x)) == r"\lfloor{x}\rfloor"
    assert latex(ceiling(x)) == r"\lceil{x}\rceil"
    assert latex(Min(x, 2, x ** 3)) == r"\min\left(2, x, x^{3}\right)"
    assert latex(Min(x, y) ** 2) == r"\min\left(x, y\right)^{2}"
    assert latex(Max(x, 2, x ** 3)) == r"\max\left(2, x, x^{3}\right)"
    assert latex(Max(x, y) ** 2) == r"\max\left(x, y\right)^{2}"
    assert latex(Abs(x)) == r"\lvert{x}\rvert"
    assert latex(re(x)) == r"\Re{x}"
    assert latex(re(x + y)) == r"\Re{x} + \Re{y}"
    assert latex(im(x)) == r"\Im{x}"
    assert latex(conjugate(x)) == r"\overline{x}"
    assert latex(gamma(x)) == r"\Gamma\left(x\right)"
    assert latex(Order(x)) == r"\mathcal{O}\left(x\right)"
    assert latex(lowergamma(x, y)) == r"\gamma\left(x, y\right)"
    assert latex(uppergamma(x, y)) == r"\Gamma\left(x, y\right)"

    assert latex(cot(x)) == r"\cot{\left (x \right )}"
    assert latex(coth(x)) == r"\coth{\left (x \right )}"
    assert latex(re(x)) == r"\Re{x}"
    assert latex(im(x)) == r"\Im{x}"
    assert latex(root(x, y)) == r"x^{\frac{1}{y}}"
    assert latex(arg(x)) == r"\arg{\left (x \right )}"
    assert latex(zeta(x)) == r"\zeta\left(x\right)"

    assert latex(zeta(x)) == r"\zeta\left(x\right)"
    assert latex(zeta(x) ** 2) == r"\zeta^{2}\left(x\right)"
    assert latex(zeta(x, y)) == r"\zeta\left(x, y\right)"
    assert latex(zeta(x, y) ** 2) == r"\zeta^{2}\left(x, y\right)"
    assert latex(dirichlet_eta(x)) == r"\eta\left(x\right)"
    assert latex(dirichlet_eta(x) ** 2) == r"\eta^{2}\left(x\right)"
    assert latex(polylog(x, y)) == r"\operatorname{Li}_{x}\left(y\right)"
    assert latex(polylog(x, y) ** 2) == r"\operatorname{Li}_{x}^{2}\left(y\right)"
    assert latex(lerchphi(x, y, n)) == r"\Phi\left(x, y, n\right)"
    assert latex(lerchphi(x, y, n) ** 2) == r"\Phi^{2}\left(x, y, n\right)"

    assert latex(Ei(x)) == r"\operatorname{Ei}{\left (x \right )}"
    assert latex(Ei(x) ** 2) == r"\operatorname{Ei}^{2}{\left (x \right )}"
    assert latex(expint(x, y) ** 2) == r"\operatorname{E}_{x}^{2}\left(y\right)"
    assert latex(Shi(x) ** 2) == r"\operatorname{Shi}^{2}{\left (x \right )}"
    assert latex(Si(x) ** 2) == r"\operatorname{Si}^{2}{\left (x \right )}"
    assert latex(Ci(x) ** 2) == r"\operatorname{Ci}^{2}{\left (x \right )}"
    assert latex(Chi(x) ** 2) == r"\operatorname{Chi}^{2}{\left (x \right )}"

    assert latex(jacobi(n, a, b, x)) == r"P_{n}^{\left(a,b\right)}\left(x\right)"
    assert latex(jacobi(n, a, b, x) ** 2) == r"\left(P_{n}^{\left(a,b\right)}\left(x\right)\right)^{2}"
    assert latex(gegenbauer(n, a, x)) == r"C_{n}^{\left(a\right)}\left(x\right)"
    assert latex(gegenbauer(n, a, x) ** 2) == r"\left(C_{n}^{\left(a\right)}\left(x\right)\right)^{2}"
    assert latex(chebyshevt(n, x)) == r"T_{n}\left(x\right)"
    assert latex(chebyshevt(n, x) ** 2) == r"\left(T_{n}\left(x\right)\right)^{2}"
    assert latex(chebyshevu(n, x)) == r"U_{n}\left(x\right)"
    assert latex(chebyshevu(n, x) ** 2) == r"\left(U_{n}\left(x\right)\right)^{2}"
    assert latex(legendre(n, x)) == r"P_{n}\left(x\right)"
    assert latex(legendre(n, x) ** 2) == r"\left(P_{n}\left(x\right)\right)^{2}"
    assert latex(assoc_legendre(n, a, x)) == r"P_{n}^{\left(a\right)}\left(x\right)"
    assert latex(assoc_legendre(n, a, x) ** 2) == r"\left(P_{n}^{\left(a\right)}\left(x\right)\right)^{2}"
    assert latex(laguerre(n, x)) == r"L_{n}\left(x\right)"
    assert latex(laguerre(n, x) ** 2) == r"\left(L_{n}\left(x\right)\right)^{2}"
    assert latex(assoc_laguerre(n, a, x)) == r"L_{n}^{\left(a\right)}\left(x\right)"
    assert latex(assoc_laguerre(n, a, x) ** 2) == r"\left(L_{n}^{\left(a\right)}\left(x\right)\right)^{2}"
    assert latex(hermite(n, x)) == r"H_{n}\left(x\right)"
    assert latex(hermite(n, x) ** 2) == r"\left(H_{n}\left(x\right)\right)^{2}"

    # Test latex printing of function names with "_"
    assert latex(polar_lift(0)) == r"\operatorname{polar\_lift}{\left (0 \right )}"
    assert latex(polar_lift(0) ** 3) == r"\operatorname{polar\_lift}^{3}{\left (0 \right )}"

开发者ID:kushal124，项目名称:sympy，代码行数:99，代码来源:test_latex.py

示例20: test_uppergamma

def test_uppergamma():
    assert uppergamma(4, 0) == 6

开发者ID:rainly，项目名称:sympy，代码行数:2，代码来源:test_gamma_functions.py

注：本文中的sympy.uppergamma函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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Python sympy.uppergamma函数代码示例

示例1: test_lowergamma

示例2: test_meijerg_lookup

示例3: test_hyper

示例4: test_ei

示例5: test_manualintegrate_special

示例6: test_expint

示例7: test_meijerg_lookup

示例8: test_lowergamma

示例9: test_lowergamma

示例10: test_latex_functions

示例11: testGamma

示例12: test_ei

示例13: test_expint

示例14: test_unpolarify

示例15: test_erfi

示例16: eval

示例17: test_latex_functions

示例18: test_ei

示例19: test_latex_functions

示例20: test_uppergamma

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