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Convert decimal number to rational: Difference between revisions

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Convert decimal number to rational (view source)

Revision as of 14:28, 6 January 2022

3,648 bytes added ,  2 years ago
m
→‎{{header|Phix}}: added syntax colouring, marked p2js compatible
m (→‎{{header|AppleScript}}: Tidied, updated output.)
m (→‎{{header|Phix}}: added syntax colouring, marked p2js compatible)
Line 2,015:
 
=={{header|Phix}}==
<!--<lang Phix>function decrat(string sphixonline)-->
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
integer nom = 0
<span style="color: #008080;">function</span> <span style="color: #000000;">decrat</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>
integer denom = 1
<span style="color: #004080;">integer</span> <span style="color: #000000;">nom</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">,</span>
if s[1..2]!="0." then ?9/0 end if
<span style="color: #000000;">denom</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span>
for i=3 to length(s) do
<span style="color: #7060A8;">assert</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">..</span><span style="color: #000000;">2</span><span style="color: #0000FF;">]=</span><span style="color: #008000;">"0."</span><span style="color: #0000FF;">)</span>
integer ch = s[i]
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">3</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
if ch<'0' or ch>'9' then ?9/0 end if
<span style="color: #004080;">integer</span> <span style="color: #000000;">ch</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span>
nom = nom*10 + ch-'0'
<span style="color: #7060A8;">assert</span><span style="color: #0000FF;">(</span><span style="color: #000000;">ch</span><span style="color: #0000FF;">>=</span><span style="color: #008000;">'0'</span> <span style="color: #008080;">and</span> <span style="color: #000000;">ch</span><span style="color: #0000FF;"><=</span><span style="color: #008000;">'9'</span><span style="color: #0000FF;">)</span>
denom *= 10
<span style="color: #000000;">nom</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">nom</span><span style="color: #0000FF;">*</span><span style="color: #000000;">10</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">ch</span><span style="color: #0000FF;">-</span><span style="color: #008000;">'0'</span>
end for
<span style="color: #000000;">denom</span> <span style="color: #0000FF;">*=</span> <span style="color: #000000;">10</span>
return sq_div({nom,denom},gcd(nom,denom))
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
end function
<span style="color: #008080;">return</span> <span style="color: #7060A8;">sq_div</span><span style="color: #0000FF;">({</span><span style="color: #000000;">nom</span><span style="color: #0000FF;">,</span><span style="color: #000000;">denom</span><span style="color: #0000FF;">},</span><span style="color: #7060A8;">gcd</span><span style="color: #0000FF;">(</span><span style="color: #000000;">nom</span><span style="color: #0000FF;">,</span><span style="color: #000000;">denom</span><span style="color: #0000FF;">))</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
?decrat("0.9054054")
?decrat("0.518518")
<span style="color: #0000FF;">?</span><span style="color: #000000;">decrat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"0.9054054"</span><span style="color: #0000FF;">)</span>
?decrat("0.75")</lang>
<span style="color: #0000FF;">?</span><span style="color: #000000;">decrat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"0.518518"</span><span style="color: #0000FF;">)</span>
<span style="color: #0000FF;">?</span><span style="color: #000000;">decrat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"0.75"</span><span style="color: #0000FF;">)</span>
<!--</lang>-->
{{out}}
<pre>
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