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Not a Number.

This represents the corresponding data type to floating point nan, which
is defined in the IEEE 754 floating point standard, and corresponds to the
Python ``float('nan')``.

NaN serves as a place holder for numeric values that are indeterminate.
Most operations on nan, produce another nan.  Most indeterminate forms,
such as ``0/0`` or ``oo - oo` produce nan.  Two exceptions are ``0**0``
and ``oo**0``, which all produce ``1`` (this is consistent with Python's(more...)

src/s/y/sympy-HEAD/sympy/integrals/meijerint.py   sympy(Download)
def _check_antecedents_inversion(g, x):
    """ Check antecedents for the laplace inversion integral. """
    from sympy import re, im, Or, And, Eq, exp, I, Add, nan, Ne
    _debug('Checking antecedents for inversion:')
    z = g.argument
                                    inverse_mellin_transform, IntegralTransformError,
                                    MellinTransformStripError)
    from sympy import oo, nan, zoo, simplify, cancel
 
    def my_imt(F, s, x, strip):

src/s/y/sympy-0.7.5/sympy/integrals/meijerint.py   sympy(Download)
def _check_antecedents_inversion(g, x):
    """ Check antecedents for the laplace inversion integral. """
    from sympy import re, im, Or, And, Eq, exp, I, Add, nan, Ne
    _debug('Checking antecedents for inversion:')
    z = g.argument
                                    inverse_mellin_transform, IntegralTransformError,
                                    MellinTransformStripError)
    from sympy import oo, nan, zoo, simplify, cancel
 
    def my_imt(F, s, x, strip):

src/s/y/sympy-HEAD/sympy/core/tests/test_wester.py   sympy(Download)
"""
 
from sympy import (Rational, symbols, factorial, sqrt, log, exp, oo, product,
    binomial, rf, pi, gamma, igcd, factorint, nsimplify, radsimp, combsimp,
    npartitions, totient, primerange, factor, simplify, gcd, resultant, expand,

src/s/y/sympy-HEAD/sympy/core/tests/test_expr.py   sympy(Download)
from __future__ import division
 
from sympy import (Add, Basic, S, Symbol, Wild, Float, Integer, Rational, I,
    sin, cos, tan, exp, log, nan, oo, sqrt, symbols, Integral, sympify,
    WildFunction, Poly, Function, Derivative, Number, pi, NumberSymbol, zoo,

src/s/y/sympy-HEAD/sympy/integrals/tests/test_integrals.py   sympy(Download)
from sympy import (
    Abs, acos, acosh, Add, adjoint, asin, asinh, atan, Ci, conjugate, cos,
    Derivative, diff, DiracDelta, E, exp, erf, erfi, EulerGamma, factor, Function,
    Heaviside, I, Integral, integrate, Interval, Lambda, LambertW, log,
    Matrix, O, oo, pi, Piecewise, Poly, Rational, S, simplify, sin, sqrt,

src/s/y/sympy-HEAD/sympy/functions/special/tests/test_error_functions.py   sympy(Download)
from sympy import (
    symbols, expand, expand_func, nan, oo, Float, conjugate, diff,
    re, im, Abs, O, factorial, exp_polar, polar_lift, gruntz, limit,
    Symbol, I, integrate, S,
    sqrt, sin, cos, sinh, cosh, exp, log, pi, EulerGamma,

src/s/y/sympy-0.7.5/sympy/integrals/tests/test_integrals.py   sympy(Download)
from sympy import (
    Abs, acos, acosh, Add, adjoint, asin, asinh, atan, Ci, conjugate, cos,
    Derivative, diff, DiracDelta, E, exp, erf, erfi, EulerGamma, factor, Function,
    Heaviside, I, Integral, integrate, Interval, Lambda, LambertW, log,
    Matrix, O, oo, pi, Piecewise, Poly, Rational, S, simplify, sin, sqrt,

src/s/y/sympy-0.7.5/sympy/functions/special/tests/test_error_functions.py   sympy(Download)
from sympy import (
    symbols, expand, expand_func, nan, oo, Float, conjugate, diff,
    re, im, Abs, O, factorial, exp_polar, polar_lift, gruntz, limit,
    Symbol, I, integrate, S,
    sqrt, sin, cos, sinh, cosh, exp, log, pi, EulerGamma,

src/s/y/sympy-HEAD/sympy/functions/elementary/tests/test_trigonometric.py   sympy(Download)
from sympy import (symbols, Symbol, nan, oo, zoo, I, sinh, sin, acot, pi, atan,
        acos, Rational, sqrt, asin, acot, cot, coth, E, S, tan, tanh, cos,
        cosh, atan2, exp, log, asinh, acoth, atanh, O, cancel, Matrix, re, im,
        Float, Pow, gcd, sec, csc, cot, diff, simplify, Heaviside, arg, conjugate)
 

src/s/y/sympy-0.7.5/sympy/functions/elementary/tests/test_trigonometric.py   sympy(Download)
from sympy import (symbols, Symbol, nan, oo, zoo, I, sinh, sin, pi, atan,
        acos, Rational, sqrt, asin, acot, coth, E, S, tan, tanh, cos,
        cosh, atan2, exp, log, asinh, acoth, atanh, O, cancel, Matrix, re, im,
        Float, Pow, gcd, sec, csc, cot, diff, simplify, Heaviside, arg,
        conjugate, series, FiniteSet)

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