Module complex_number

File: sage/rings/complex_number.pyx (starting at line 1317)

Return the complex number defined by the strings s_real and s_imag as an element of
\code{ComplexField(prec=n)}, where n potentially has slightly more
(controlled by pad) bits than given by s.

INPUT:
    s_real -- a string that defines a real number (or something whose
              string representation defines a number)
    s_imag -- a string that defines a real number (or something whose
              string representation defines a number)             
    pad -- an integer >= 0.
    min_prec -- number will have at least this many bits of precision, no matter what.

EXAMPLES:
    sage: ComplexNumber('2.3')
    2.30000000000000
    sage: ComplexNumber('2.3','1.1')
    2.30000000000000 + 1.10000000000000*I
    sage: ComplexNumber(10)
    10.0000000000000
    sage: ComplexNumber(10,10)
    10.0000000000000 + 10.0000000000000*I
    sage: ComplexNumber(1.000000000000000000000000000,2)
    1.000000000000000000000000000 + 2.000000000000000000000000000*I
    sage: ComplexNumber(1,2.000000000000000000000)
    1.000000000000000000000 + 2.000000000000000000000*I

    sage: sage.rings.complex_number.create_ComplexNumber(s_real=2,s_imag=1)
    2.00000000000000 + 1.00000000000000*I

File: sage/rings/complex_number.pyx (starting at line 39)

Returns True if x is a complex number. In particular, if x is of the
\code{ComplexNumber} type.

EXAMPLES:
    sage: a = ComplexNumber(1,2); a
    1.00000000000000 + 2.00000000000000*I
    sage: is_ComplexNumber(a)
    True
    sage: b = ComplexNumber(1); b
    1.00000000000000
    sage: is_ComplexNumber(b)
    True

    Note that the global element I is of type \code{SymbolicConstant}.
    However, elements of the class \code{ComplexField_class} are of
    type \code{ComplexNumber}:
    
    sage: c = 1 + 2*I
    sage: is_ComplexNumber(c)
    False
    sage: d = CC(1 + 2*I)
    sage: is_ComplexNumber(d)
    True