#!@OOREXX_SHEBANG_PROGRAM@
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/******************************************************************************/
/*  usecomp.rex         Open Object Rexx Samples                              */
/*                                                                            */
/*  A simple demonstration of the complex number class                        */
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/* -------------------------------------------------------------------------- */
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/*  Description:                                                              */
/*  This program demonstrates use of the ::requires directive using the       */
/*  complex number class included in the samples.                             */
/******************************************************************************/

Say 'A simple example of complex number arithmetic:'
comp1 = .complex~new(-6,4)                  /* create two complex numbers     */
comp2 = .complex[4,1]                       /* alternate syntax               */
comp3 = .complex[-8]                        /* imaginary part omitted         */
comp4 = .complex[, -1]                      /* real part omitted              */

/* Note that SAY uses the STRING method of the COMPLEX class for display      */
say '-('comp1') is' (-comp1)
say '('comp2')~abs is' comp2~abs
say '('comp1') + ('comp2') is' comp1+comp2
say '('comp1') - ('comp2') is' comp1-comp2
say '('comp1') * ('comp2') is' comp1*comp2
say '('comp1') / ('comp2') is' comp1/comp2

/* Note that comparisons and SORT use the COMPARETO method for ordering       */
say '('comp1') > ('comp2') is' (comp1>comp2)
say '.Array~of(('comp1'), ('comp2'), ('comp3'), ('comp4'))~sort[1] is' -
    .Array~of(comp1, comp2, comp3, comp4)~sort[1]

::REQUIRES 'complex.cls'