NAME

complex − introduction to C++ complex mathematics library

SYNOPSIS

#include <complex.h>
classcomplex;

DESCRIPTION

This section describes functions and operators found in the C++ Complex Mathematics Library, libcomplex.a.  These functions are not automatically loaded by the C++ compiler, however, the link editor searches this library under the −lcomplex option.  Declarations for these functions may be found in the #include file <complex.h>. 

The Complex Mathematics library implements the data type of complex numbers as a class, complex.  It overloads the standard input, output, arithmetic, assignment, and comparison operators, discussed in the manual pages for cplxops(3C++).  It also overloads the standard exponential, logarithm, power, and square root functions, discussed in cplxexp(3C++), and the trigonometric functions of sine, cosine, hyperbolic sine, and hyperbolic cosine, discussed in cplxtrig(3C++), for the class complex.  Routines for converting between Cartesian and polar coordinate systems are discussed in cartpol(3C++).  Error handling is described in cplxerr(3C++). 

FILES

INCDIR/complex.h
LIBDIR/libcomplex.a

SEE ALSO

cartpol(3C++), cplxerr(3C++), cplxops(3C++), cplxexp(3C++), and cplxtrig(3C++). 
Stroustrup, B., "Complex Arithmetic in C++," C++ Language System Release 2.0 Library Manual.

DIAGNOSTICS

Functions in the Complex Mathematics Library (3C++) may return the conventional values (0, 0), (0, ±HUGE), (±HUGE, 0), or (±HUGE, ±HUGE), when the function is undefined for the given arguments or when the value is not representable.  (HUGE is the largest-magnitude single-precision floating-point number and is defined in the file <math.h>.  The header file <math.h> is included in the file <complex.h>.)  In these cases, the external variable errno [see intro(2)] is set to the value EDOM or ERANGE. 

SunOS 3.0β  —  Last change: C++ Complex Math Library