C8_COMPLEX_LIB
A C++ Class for Complex Arithmetic {#c8_complex_lib-a-c-class-for-complex-arithmetic align="center"}
C8_COMPLEX_LIB is a C++ library which defines complex numbers and the operations necessary to do arithmetic on them.
Since the ANSI C++ standard library now includes a complex class, the information described here is probably not of practical use. On the other hand, it may be helpful as a practical demonstration of how to define a useful arithmetic class.
The C8_COMPLEX class defines a c8_complex number as a pair of doubles. A variable c in this class may be declared by
c8_complex c;
The declaration can include an initialization:
c8_complex c = c8_complex ( 1.0, 2.0 );
A variable c declared as c8_complex may be assigned a value using the c8_complex() function:
c = c8_complex ( a, b )
where a and b are double values; the assignment
c = c8_complex ( a )
sets the real part of c to a, and the imaginary part to 0.
A variable c declared as c8_complex may be used in addition, subtraction, multiplication, or division with another c8_complex value, or a double value:
c3 = c1 + c2;
c3 = c1 - c2;
c3 = c1 * c2;
c3 = c1 / c2;
A variable c declared as c8_complex may be conjugated, or its real or imaginary part may be produced as a double value:
c2 = ~c;
d1 = c1.real ( );
d2 = c1.imaginary ( );
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
C8_COMPLEX_LIB is available in a C version and a C++ version.
C4_COMPLEX_LIB, a C++ library which defines a class called c4_complex for complex numbers with single precision components.
C8LIB, a C++ library which implements certain elementary functions for "C8" or double precision complex variables using the C++ "complex " datatype.
CPP, C++ programs which includes an example of the declaration and use of complex variables.
- Steve Oualline,
Practical C++ Programming,
O'Reilly & Associates, 1997,
ISBN: 1-56592-139-9
- c8_complex_lib.cpp, the source code;
- c8_complex_lib.hpp, the include file.
- c8_complex_lib_prb.cpp, the calling program;
- c8_complex_lib_prb_output.txt, the output file.
You can go up one level to the C++ source codes.
Last revised on 07 August 2010.