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CPLXOPS(3CC4)							 CPLXOPS(3CC4)

NAME
       cplxops	- arithmetic operator functions in the C++ complex number math
       library

SYNOPSIS
       #include <complex.h>
       class complex {
       public:
	    friend complex operator- (const complex);
	    friend complex operator+ (const complex, const complex);
	    friend complex operator+ (double, const complex);
	    friend complex operator+ (const complex, double);
	    friend complex operator- (const complex, const complex);
	    friend complex operator- (double, const complex);
	    friend complex operator- (const complex, double);
	    friend complex operator* (const complex, const complex);
	    friend complex operator* (const complex, double);
	    friend complex operator* (double, const complex);
	    friend complex operator/ (const complex, const complex);
	    friend complex operator/ (const complex, double);
	    friend complex operator/ (double, const complex);
	    friend int	   operator== (const complex, const complex);
	    friend int	   operator!= (const complex, const complex);
	    void operator+= (const complex);
	    void operator+= (double);
	    void operator-= (const complex);
	    void operator-= (double);
	    void operator*= (const complex);
	    void operator*= (double);
	    void operator/= (const complex);
	    void operator/= (double);
	    ... // remainder not shown here
       };

DESCRIPTION
       These functions are versions of the normal arithmetic  operators	 over‐
       loaded for use with complex numbers.

   Unary minus
       complex z = - x
	      Returns the negative of complex x.

   Binary arithmetic
       complex z = x + y
	      Returns  the sum of x and y, where one or both are complex.  The
	      library provides versions of this function optimized for	combi‐
	      nations of floating-point and complex arguments.

       complex z = x - y
	      Returns  the  difference	of x and y, where one or both are com‐
	      plex.  The library provides versions of this function  optimized
	      for combinations of floating-point and complex arguments.

       complex z = x * y
	      Returns  the  product of x and y, where one or both are complex.
	      The library provides versions of	this  function	optimized  for
	      combinations of floating-point and complex arguments.

       complex z = x / y
	      Returns  the quotient of x and y, where one or both are complex.
	      The library provides versions of	this  function	optimized  for
	      combinations of floating-point and complex arguments.

   Comparison
       Complex numbers are not well-ordered, so only equality can be tested.

       x == y Returns 1 if x and y (both complex) are equal, 0 otherwise.

       x != y Returns 0 if x and y (both complex) are equal, 1 otherwise.

   Assignment
       The  compiler-generated	default	 assignment  operator, complex& opera‐
       tor=(const complex&), is appropriate for this type, so it is not	 rede‐
       fined  by  the  class.  Note:  The compound assignment operators do not
       return a value, and so cannot be used in larger expressions.  For exam‐
       ple, the expression
	    z = ( x += y );
       is  valid  if x is an integer or floating-point type, but will not com‐
       pile if x is complex.

       x += y Complex x is incremented by the value of y.   The	 library  pro‐
	      vides versions of this function optimized for floating-point and
	      complex right-hand arguments.

       x -= y Complex x is decremented by the value of y.   The	 library  pro‐
	      vides versions of this function optimized for floating-point and
	      complex right-hand arguments.

       x *= y Complex x is assigned the value  of  itself  multiplied  by  the
	      value  of	 y.   The  library  provides versions of this function
	      optimized for floating-point and complex right-hand arguments.

       x /= y Complex x is assigned the value of itself divided by  the	 value
	      of  y.  The library provides versions of this function optimized
	      for floating-point and complex right-hand arguments.

SEE ALSO
       cplx.intro(3CC4), cartpol(3CC4), cplxerr(3CC4), cplxexp(3CC4), cplx‐
       trig(3CC4)

       C++ Library Reference Chapter 2, "The Complex Arithmetic Library."

				07 August 1997			 CPLXOPS(3CC4)
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