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Kahan summation: Difference between revisions
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→{{header|REXX}}: added "version"s to various output sections.
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Kahan summation of a,b,c = 1.00000000000000000000000000000
</pre>
{{out|output|text= using Regina version 3.3 and earlier:}}
<pre>
decimal digits = 6
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simple summation of a,b,c = 0.999999999999999999999999999997
Kahan summation of a,b,c = 1.00000000000000000000000000000</pre>
{{out|output|text= using Regina version 3.4 and later (latest at this time is version 3.9.1):}}
<pre>decimal digits = 6
a = 10000.0
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===tweaked version===
The following tweaked REXX version causes Regina (version 3.4 and later) to work properly.
<lang rexx>/*REXX program demonstrates simple addition versus using Kahan summation algorithm. */
numeric digits 6 /*use six decimal digits for precision.*/
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say 'Kahan summation of a,b,c = ' kahan(a,b,c) /*sum via Kahan summation. */
return</lang>
{{out|output|text= using Regina version 3.4 and also for later versions:}}
<pre>decimal digits = 6
a = 10000.0
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simple summation of a,b,c = 1.0000000000000000000000000000001
Kahan summation of a,b,c = 1.0000000000000000000000000000000</pre>
'''output''' for ooRexx:
<pre>decimal digits = 6
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=={{header|Scala}}==
===IEEE 754 Single precision 32-bit (JavaScript defaults to Double precision.)===
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