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Getting the number of decimal places: Difference between revisions

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Getting the number of decimal places (view source)

Revision as of 23:21, 19 April 2024

9,594 bytes removed ,  1 month ago
m
→‎{{header|Phix}}: use pygments
(Added Easylang)
m (→‎{{header|Phix}}: use pygments)
 
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=={{header|Phix}}==
<!--<syntaxhighlight lang="phix">(phixonline)-->
<!--</syntaxhighlight>-- lang="phix">▼
<span style="color: #008080;">constant</span> <span style="color: #000000;">fracfmt</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">machine_bits</span><span style="color: #0000FF;">()=</span><span style="color: #000000;">32</span><span style="color: #0000FF;">?</span><span style="color: #008000;">"%.14g"</span><span style="color: #0000FF;">:</span><span style="color: #008000;">"%.18g"</span><span style="color: #0000FF;">)</span>
constant fracfmt = iff(machine_bits()=32?"%.14g":"%.18g")
<span style="color: #008080;">function</span> <span style="color: #000000;">num_decimals</span><span style="color: #0000FF;">(</span><span style="color: #004080;">object</span> <span style="color: #000000;">o</span><span style="color: #0000FF;">)</span>
function num_decimals(object o)
<span style="color: #004080;">integer</span> <span style="color: #000000;">nd</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span>
integer nd = -1
<span style="color: #004080;">string</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">t</span>
string s, t
<span style="color: #008080;">if</span> <span style="color: #004080;">integer</span><span style="color: #0000FF;">(</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span>
if integer(o) then
<span style="color: #000000;">nd</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span>
nd = 0
<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"%d"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span>
s = sprintf("%d",o)
<span style="color: #008080;">elsif</span> <span style="color: #004080;">atom</span><span style="color: #0000FF;">(</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span>
elsif atom(o) then
<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"%.19g"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span>
s = sprintf("%.19g",o)
<span style="color: #000000;">o</span> <span style="color: #0000FF;">-=</span> <span style="color: #7060A8;">trunc</span><span style="color: #0000FF;">(</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span>
o -= trunc(o)
<span style="color: #008080;">if</span> <span style="color: #000000;">o</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span>
if o=0 then
<span style="color: #000000;">nd</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span>
<span style nd ="color: #008080;">else</span>0
else
<span style="color: #000000;">t</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">fracfmt</span><span style="color: #0000FF;">,</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span>
t = sprintf(fracfmt,o)
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end if
<span style="color: #008080;">elsif</span> <span style="color: #004080;">string</span><span style="color: #0000FF;">(</span><span style="color: #000000;">o</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">then</span>
elsif string(o) then
<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">o</span>
s = o
<span style="color: #000000;">t</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span>
t = s
<span style="color: #008080;">else</span>
else
<span style="color: #7060A8;">crash</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"unknown type"</span><span style="color: #0000FF;">)</span>
crash("unknown type")
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end if
<span style="color: #008080;">if</span> <span style="color: #000000;">nd</span><span style="color: #0000FF;">=-</span><span style="color: #000000;">1</span> <span style="color: #008080;">then</span>
if nd=-1 then
<span style="color: #004080;">integer</span> <span style="color: #000000;">e</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">find</span><span style="color: #0000FF;">(</span><span style="color: #008000;">'e'</span><span style="color: #0000FF;">,</span><span style="color: #000000;">t</span><span style="color: #0000FF;">)</span>
integer e = find('e',t)
<span style="color: #008080;">if</span> <span style="color: #000000;">e</span> <span style="color: #008080;">then</span>
if e then
<span style="color: #0000FF;">{</span><span style="color: #000000;">t</span><span style="color: #0000FF;">,</span><span style="color: #000000;">e</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">t</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">..</span><span style="color: #000000;">e</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">],</span><span style="color: #7060A8;">to_number</span><span style="color: #0000FF;">(</span><span style="color: #000000;">t</span><span style="color: #0000FF;">[</span><span style="color: #000000;">e</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">..$])}</span>
{t,e} = {t[1..e-1],to_number(t[e+1..$])}
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end if
<span style="color: #004080;">integer</span> <span style="color: #000000;">dot</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">find</span><span style="color: #0000FF;">(</span><span style="color: #008000;">'.'</span><span style="color: #0000FF;">,</span><span style="color: #000000;">t</span><span style="color: #0000FF;">)</span>
integer dot = find('.',t)
<span style="color: #000000;">nd</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dot</span><span style="color: #0000FF;">?</span><span style="color: #7060A8;">max</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">t</span><span style="color: #0000FF;">)-</span><span style="color: #000000;">dot</span><span style="color: #0000FF;">-</span><span style="color: #000000;">e</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">):</span><span style="color: #7060A8;">max</span><span style="color: #0000FF;">(-</span><span style="color: #000000;">e</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">))</span>
nd = iff(dot?max(length(t)-dot-e,0):max(-e,0))
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
end if
<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">shorten</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"digits"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">5</span><span style="color: #0000FF;">)</span>
s = shorten(s,"digits",5)
<span style="color: #008080;">return</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span><span style="color: #000000;">nd</span><span style="color: #0000FF;">}</span>
return {s,nd}
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
end function
<span style="color: #004080;">sequence</span> <span style="color: #000000;">tests</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"0.00100"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">0.00100</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">001.805</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">/</span><span style="color: #000000;">3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">12</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">12.345</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">12.345555555555</span><span style="color: #0000FF;">,</span>
sequence tests = {"0.00100", 0.00100, 001.805, 1/3, 12, 12.345, 12.345555555555,
<span style="color: #008000;">"12.3450"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"12.34555555555555555555"</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">12.345e53</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">1.2345e-08</span><span style="color: #0000FF;">,</span>
"12.3450", "12.34555555555555555555", 12.345e53, 1.2345e-08,
<span style="color: #008000;">"12.345e53"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"1.2345e-08"</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"0.1234567890987654321"</span><span style="color: #0000FF;">,</span>
"12.345e53", "1.2345e-08", "0.1234567890987654321",
<span style="color: #008000;">"124093581919.648947697827373650380188008224280338254175148904323577880859375"</span><span style="color: #0000FF;">}</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tests</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
for i=1 to length(tests) do
<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;">"%25s has %d decimals\n"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">num_decimals</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tests</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]))</span>
printf(1,"%25s has %d decimals\n",num_decimals(tests[i]))
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
end for
▲<!--</syntaxhighlight>-->
</syntaxhighlight>
{{out}}
32 bit
Petelomax
7,806

edits

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