RosettaCodeData/Task/Van-der-Corput-sequence/Phix/van-der-corput-sequence.phix

(phixonline)-->
 <span style="color: #008080;">enum</span> <span style="color: #000000;">BASE</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">FRAC</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">DECIMAL</span>
 <span style="color: #008080;">constant</span> <span style="color: #000000;">DESC</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"Base"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"Fraction"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"Decimal"</span><span style="color: #0000FF;">}</span>

 <span style="color: #008080;">function</span> <span style="color: #000000;">vdc</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">atom</span> <span style="color: #000000;">base</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">flag</span><span style="color: #0000FF;">)</span>
 <span style="color: #004080;">object</span> <span style="color: #000000;">res</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">""</span>
 <span style="color: #004080;">atom</span> <span style="color: #000000;">num</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">denom</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">digit</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">g</span>
     <span style="color: #008080;">while</span> <span style="color: #000000;">n</span> <span style="color: #008080;">do</span>
         <span style="color: #000000;">denom</span> <span style="color: #0000FF;">*=</span> <span style="color: #000000;">base</span>
         <span style="color: #000000;">digit</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">remainder</span><span style="color: #0000FF;">(</span><span style="color: #000000;">n</span><span style="color: #0000FF;">,</span><span style="color: #000000;">base</span><span style="color: #0000FF;">)</span>
         <span style="color: #000000;">n</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">n</span><span style="color: #0000FF;">/</span><span style="color: #000000;">base</span><span style="color: #0000FF;">)</span>
         <span style="color: #008080;">if</span> <span style="color: #000000;">flag</span><span style="color: #0000FF;">=</span><span style="color: #000000;">BASE</span> <span style="color: #008080;">then</span>
             <span style="color: #000000;">res</span> <span style="color: #0000FF;">&=</span> <span style="color: #000000;">digit</span><span style="color: #0000FF;">+</span><span style="color: #008000;">'0'</span>
         <span style="color: #008080;">else</span>
             <span style="color: #000000;">num</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">num</span><span style="color: #0000FF;">*</span><span style="color: #000000;">base</span><span style="color: #0000FF;">+</span><span style="color: #000000;">digit</span>
         <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
     <span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
     <span style="color: #008080;">if</span> <span style="color: #000000;">flag</span><span style="color: #0000FF;">=</span><span style="color: #000000;">FRAC</span> <span style="color: #008080;">then</span>
         <span style="color: #000000;">g</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">gcd</span><span style="color: #0000FF;">(</span><span style="color: #000000;">num</span><span style="color: #0000FF;">,</span><span style="color: #000000;">denom</span><span style="color: #0000FF;">)</span>
         <span style="color: #008080;">return</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">num</span><span style="color: #0000FF;">/</span><span style="color: #000000;">g</span><span style="color: #0000FF;">,</span><span style="color: #000000;">denom</span><span style="color: #0000FF;">/</span><span style="color: #000000;">g</span><span style="color: #0000FF;">}</span>
     <span style="color: #008080;">elsif</span> <span style="color: #000000;">flag</span><span style="color: #0000FF;">=</span><span style="color: #000000;">DECIMAL</span> <span style="color: #008080;">then</span>
         <span style="color: #008080;">return</span> <span style="color: #000000;">num</span><span style="color: #0000FF;">/</span><span style="color: #000000;">denom</span>
     <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
     <span style="color: #008080;">return</span> <span style="color: #0000FF;">{</span><span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">res</span><span style="color: #0000FF;">)=</span><span style="color: #000000;">0</span><span style="color: #0000FF;">?</span><span style="color: #008000;">"0"</span><span style="color: #0000FF;">:</span><span style="color: #008000;">"0."</span><span style="color: #0000FF;">&</span><span style="color: #000000;">res</span><span style="color: #0000FF;">)}</span>
 <span style="color: #008080;">end</span> <span style="color: #008080;">function</span>

 <span style="color: #008080;">procedure</span> <span style="color: #000000;">show_vdc</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">flag</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">string</span> <span style="color: #000000;">fmt</span><span style="color: #0000FF;">)</span>
 <span style="color: #004080;">object</span> <span style="color: #000000;">v</span>
     <span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">2</span> <span style="color: #008080;">to</span> <span style="color: #000000;">5</span> <span style="color: #008080;">do</span>
         <span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%s %d: "</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">DESC</span><span style="color: #0000FF;">[</span><span style="color: #000000;">flag</span><span style="color: #0000FF;">],</span><span style="color: #000000;">i</span><span style="color: #0000FF;">})</span>
         <span style="color: #008080;">for</span> <span style="color: #000000;">j</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span> <span style="color: #008080;">to</span> <span style="color: #000000;">9</span> <span style="color: #008080;">do</span>
             <span style="color: #000000;">v</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">vdc</span><span style="color: #0000FF;">(</span><span style="color: #000000;">j</span><span style="color: #0000FF;">,</span><span style="color: #000000;">i</span><span style="color: #0000FF;">,</span><span style="color: #000000;">flag</span><span style="color: #0000FF;">)</span>
             <span style="color: #008080;">if</span> <span style="color: #000000;">flag</span><span style="color: #0000FF;">=</span><span style="color: #000000;">FRAC</span> <span style="color: #008080;">and</span> <span style="color: #000000;">v</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span>
                 <span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"0 "</span><span style="color: #0000FF;">)</span>
             <span style="color: #008080;">else</span>
                 <span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">fmt</span><span style="color: #0000FF;">,</span><span style="color: #000000;">v</span><span style="color: #0000FF;">)</span>
             <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
         <span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
         <span style="color: #7060A8;">puts</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">)</span>
     <span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
 <span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>

 <span style="color: #000000;">show_vdc</span><span style="color: #0000FF;">(</span><span style="color: #000000;">BASE</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%s "</span><span style="color: #0000FF;">)</span>
 <span style="color: #000000;">show_vdc</span><span style="color: #0000FF;">(</span><span style="color: #000000;">FRAC</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%d/%d "</span><span style="color: #0000FF;">)</span>
 <span style="color: #000000;">show_vdc</span><span style="color: #0000FF;">(</span><span style="color: #000000;">DECIMAL</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%g "</span><span style="color: #0000FF;">)</span>
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