Python cmath.cosh() Examples

The following are 9 code examples of cmath.cosh(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module cmath , or try the search function .
Example #1
Source File: math_functions.py    From jhTAlib with GNU General Public License v3.0 5 votes vote down vote up
def COSH(df, price='Close'):
    """
    Hyperbolic Cosine
    Returns: list of floats = jhta.COSH(df, price='Close')
    """
    return [cmath.cosh(df[price][i]).real for i in range(len(df[price]))] 
Example #2
Source File: test_cmath_jy.py    From medicare-demo with Apache License 2.0 5 votes vote down vote up
def test_cosh(self):
        self.assertAlmostEqual(complex(-6.58066, -7.58155),
                               cmath.cosh(complex(3, 4))) 
Example #3
Source File: test_cmath_jy.py    From CTFCrackTools-V2 with GNU General Public License v3.0 5 votes vote down vote up
def test_cosh(self):
        self.assertAlmostEqual(complex(-6.58066, -7.58155),
                               cmath.cosh(complex(3, 4))) 
Example #4
Source File: test_functions.py    From altanalyze with Apache License 2.0 5 votes vote down vote up
def test_trig_hyperb_basic():
    for x in (list(range(100)) + list(range(-100,0))):
        t = x / 4.1
        assert cos(mpf(t)).ae(math.cos(t))
        assert sin(mpf(t)).ae(math.sin(t))
        assert tan(mpf(t)).ae(math.tan(t))
        assert cosh(mpf(t)).ae(math.cosh(t))
        assert sinh(mpf(t)).ae(math.sinh(t))
        assert tanh(mpf(t)).ae(math.tanh(t))
    assert sin(1+1j).ae(cmath.sin(1+1j))
    assert sin(-4-3.6j).ae(cmath.sin(-4-3.6j))
    assert cos(1+1j).ae(cmath.cos(1+1j))
    assert cos(-4-3.6j).ae(cmath.cos(-4-3.6j)) 
Example #5
Source File: test_functions.py    From altanalyze with Apache License 2.0 5 votes vote down vote up
def test_complex_functions():
    for x in (list(range(10)) + list(range(-10,0))):
        for y in (list(range(10)) + list(range(-10,0))):
            z = complex(x, y)/4.3 + 0.01j
            assert exp(mpc(z)).ae(cmath.exp(z))
            assert log(mpc(z)).ae(cmath.log(z))
            assert cos(mpc(z)).ae(cmath.cos(z))
            assert sin(mpc(z)).ae(cmath.sin(z))
            assert tan(mpc(z)).ae(cmath.tan(z))
            assert sinh(mpc(z)).ae(cmath.sinh(z))
            assert cosh(mpc(z)).ae(cmath.cosh(z))
            assert tanh(mpc(z)).ae(cmath.tanh(z)) 
Example #6
Source File: test_functions.py    From altanalyze with Apache License 2.0 5 votes vote down vote up
def test_complex_inverse_functions():
    for (z1, z2) in random_complexes(30):
        # apparently cmath uses a different branch, so we
        # can't use it for comparison
        assert sinh(asinh(z1)).ae(z1)
        #
        assert acosh(z1).ae(cmath.acosh(z1))
        assert atanh(z1).ae(cmath.atanh(z1))
        assert atan(z1).ae(cmath.atan(z1))
        # the reason we set a big eps here is that the cmath
        # functions are inaccurate
        assert asin(z1).ae(cmath.asin(z1), rel_eps=1e-12)
        assert acos(z1).ae(cmath.acos(z1), rel_eps=1e-12)
        one = mpf(1)
    for i in range(-9, 10, 3):
        for k in range(-9, 10, 3):
            a = 0.9*j*10**k + 0.8*one*10**i
            b = cos(acos(a))
            assert b.ae(a)
            b = sin(asin(a))
            assert b.ae(a)
    one = mpf(1)
    err = 2*10**-15
    for i in range(-9, 9, 3):
        for k in range(-9, 9, 3):
            a = -0.9*10**k + j*0.8*one*10**i
            b = cosh(acosh(a))
            assert b.ae(a, err)
            b = sinh(asinh(a))
            assert b.ae(a, err) 
Example #7
Source File: test_functions.py    From altanalyze with Apache License 2.0 5 votes vote down vote up
def test_mpcfun_real_imag():
    mp.dps = 15
    x = mpf(0.3)
    y = mpf(0.4)
    assert exp(mpc(x,0)) == exp(x)
    assert exp(mpc(0,y)) == mpc(cos(y),sin(y))
    assert cos(mpc(x,0)) == cos(x)
    assert sin(mpc(x,0)) == sin(x)
    assert cos(mpc(0,y)) == cosh(y)
    assert sin(mpc(0,y)) == mpc(0,sinh(y))
    assert cospi(mpc(x,0)) == cospi(x)
    assert sinpi(mpc(x,0)) == sinpi(x)
    assert cospi(mpc(0,y)).ae(cosh(pi*y))
    assert sinpi(mpc(0,y)).ae(mpc(0,sinh(pi*y)))
    c, s = cospi_sinpi(mpc(x,0))
    assert c == cospi(x)
    assert s == sinpi(x)
    c, s = cospi_sinpi(mpc(0,y))
    assert c.ae(cosh(pi*y))
    assert s.ae(mpc(0,sinh(pi*y)))
    c, s = cos_sin(mpc(x,0))
    assert c == cos(x)
    assert s == sin(x)
    c, s = cos_sin(mpc(0,y))
    assert c == cosh(y)
    assert s == mpc(0,sinh(y)) 
Example #8
Source File: test_cmath_jy.py    From CTFCrackTools with GNU General Public License v3.0 5 votes vote down vote up
def test_cosh(self):
        self.assertAlmostEqual(complex(-6.58066, -7.58155),
                               cmath.cosh(complex(3, 4))) 
Example #9
Source File: test_functions.py    From altanalyze with Apache License 2.0 4 votes vote down vote up
def test_perturbation_rounding():
    mp.dps = 100
    a = pi/10**50
    b = -pi/10**50
    c = 1 + a
    d = 1 + b
    mp.dps = 15
    assert exp(a) == 1
    assert exp(a, rounding='c') > 1
    assert exp(b, rounding='c') == 1
    assert exp(a, rounding='f') == 1
    assert exp(b, rounding='f') < 1
    assert cos(a) == 1
    assert cos(a, rounding='c') == 1
    assert cos(b, rounding='c') == 1
    assert cos(a, rounding='f') < 1
    assert cos(b, rounding='f') < 1
    for f in [sin, atan, asinh, tanh]:
        assert f(a) == +a
        assert f(a, rounding='c') > a
        assert f(a, rounding='f') < a
        assert f(b) == +b
        assert f(b, rounding='c') > b
        assert f(b, rounding='f') < b
    for f in [asin, tan, sinh, atanh]:
        assert f(a) == +a
        assert f(b) == +b
        assert f(a, rounding='c') > a
        assert f(b, rounding='c') > b
        assert f(a, rounding='f') < a
        assert f(b, rounding='f') < b
    assert ln(c) == +a
    assert ln(d) == +b
    assert ln(c, rounding='c') > a
    assert ln(c, rounding='f') < a
    assert ln(d, rounding='c') > b
    assert ln(d, rounding='f') < b
    assert cosh(a) == 1
    assert cosh(b) == 1
    assert cosh(a, rounding='c') > 1
    assert cosh(b, rounding='c') > 1
    assert cosh(a, rounding='f') == 1
    assert cosh(b, rounding='f') == 1