Python sign Beispiele

Beispiel #1

Datei: test_gruntz.py Projekt: yuri-karadzhov/sympy

def test_sign1():
    assert sign(Rational(0), x) == 0
    assert sign(Rational(3), x) == 1
    assert sign(Rational(-5), x) == -1
    assert sign(log(x), x) == 1
    assert sign(exp(-x), x) == 1
    assert sign(exp(x), x) == 1
    assert sign(-exp(x), x) == -1
    assert sign(3 - 1 / x, x) == 1
    assert sign(-3 - 1 / x, x) == -1
    assert sign(sin(1 / x), x) == 0

Beispiel #2

Datei: test_gruntz.py Projekt: AlexandruFlorescu/sympy

def test_sign1():
    assert sign(Rational(0), x) == 0
    assert sign(Rational(3), x) == 1
    assert sign(Rational(-5), x) == -1
    assert sign(log(x), x) == 1
    assert sign(exp(-x), x) == 1
    assert sign(exp(x), x) == 1
    assert sign(-exp(x), x) == -1
    assert sign(3-1/x, x) == 1
    assert sign(-3-1/x, x) == -1
    assert sign(sin(1/x), x) == 1

Beispiel #3

Datei: test_gruntz.py Projekt: dagidagi1/Matrix

def test_I():
    from sympy import sign
    y = Symbol("y")
    assert gruntz(I*x, x, oo) == I*oo
    assert gruntz(y*I*x, x, oo) == y*I*oo
    assert gruntz(y*3*I*x, x, oo) == y*I*oo
    assert gruntz(y*3*sin(I)*x, x, oo).simplify().rewrite(sign) == sign(y)*I*oo

Beispiel #4

Datei: test_gruntz.py Projekt: dragos1201/finance_project

def test_sign2():
    assert sign(x, x) == 1
    assert sign(-x, x) == -1
    y = Symbol("y", positive=True)
    assert sign(y, x) == 1
    assert sign(-y, x) == -1
    assert sign(y * x, x) == 1
    assert sign(-y * x, x) == -1

Beispiel #5

Datei: test_gruntz.py Projekt: agamdua/sympy

def test_sign2():
    assert sign(x, x) == 1
    assert sign(-x, x) == -1
    y = Symbol("y", positive=True)
    assert sign(y, x) == 1
    assert sign(-y, x) == -1
    assert sign(y*x, x) == 1
    assert sign(-y*x, x) == -1

Beispiel #6

Datei: test_gruntz.py Projekt: dragos1201/finance_project

def test_issue_7096():
    from sympy.functions import sign
    assert gruntz(x**-pi, x, 0, dir='-') == oo * sign((-1)**(-pi))

Beispiel #7

Datei: test_gruntz.py Projekt: dragos1201/finance_project

def test_sign1():
    assert sign(Rational(0), x) == 0
    assert sign(Rational(3), x) == 1
    assert sign(Rational(-5), x) == -1
    assert sign(log(x), x) == 1
    assert sign(exp(-x), x) == 1
    assert sign(exp(x), x) == 1
    assert sign(-exp(x), x) == -1
    assert sign(3 - 1 / x, x) == 1
    assert sign(-3 - 1 / x, x) == -1
    assert sign(sin(1 / x), x) == 1
    assert sign((x**Integer(2)), x) == 1
    assert sign(x**2, x) == 1
    assert sign(x**5, x) == 1

Beispiel #8

Datei: test_gruntz.py Projekt: KonstantinTogoi/sympy

def test_issue_7096():
    from sympy.functions import sign
    assert gruntz(x**-pi, x, 0, dir='-') == oo*sign((-1)**(-pi))

Beispiel #9

Datei: test_gruntz.py Projekt: KonstantinTogoi/sympy

def test_sign1():
    assert sign(Rational(0), x) == 0
    assert sign(Rational(3), x) == 1
    assert sign(Rational(-5), x) == -1
    assert sign(log(x), x) == 1
    assert sign(exp(-x), x) == 1
    assert sign(exp(x), x) == 1
    assert sign(-exp(x), x) == -1
    assert sign(3 - 1/x, x) == 1
    assert sign(-3 - 1/x, x) == -1
    assert sign(sin(1/x), x) == 1
    assert sign((x**Integer(2)), x) == 1
    assert sign(x**2, x) == 1
    assert sign(x**5, x) == 1