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$calcint » History » Version 2

Paul Janson, 12/25/2018 02:38 AM

1 1 Per Amundsen
_Added in 3.3_
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*$calcint(operations)*
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Returns the result of the specified operations. You can perform multiple operations.
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Can calculate extremely high numbers, but can only be used on whole numbers, not decimal/float/fractions. Does not have the limitation in $calc() where any term or output value 2^96 or higher is zero.
8 1 Per Amundsen
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Any term containing non-zero fraction replaced by zero. Output has any fraction removed.
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[[Arithmetic Operators]].
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Operations can be grouped with parentheses.
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Same operators as $calc() uses except:
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// floor divide operator behaves like / operator, being an 'int divide' that's identical for positive results but not for negatives.
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*Parameters*
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operations - The calculations to perform.
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*Example*
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<pre>
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accurate result for extremely large integers
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//echo -ag $calcint( ((2 ^ 256) - 1) * ((2 ^ 256) +1) )
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fraction removed from output. not affected by fraction being zero
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//echo -ag $calcint(48.0 / 10.0) is same as $int($calc(48 / 10))
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term with fraction treated as if zero
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//echo -ag $calcint(5 + 2.5) is same as 5 + 0
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not affected by value 2^96 or greater
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//var %ag 79228162514264337593543950335 | echo -a $calcint(1+%a) vs $calc(1+%a) is 79228162514264337593543950336 vs 0
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fractional terms created by parenthesis can affect output
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//echo -ag $calcint(2 * (48 / 10)) vs $calcint(2 * 48 / 10) is 8 vs 9
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If you need floordivide for negative numbers, you must calculate it using / (divide) and % (modulo). Note that $calc() is accurate for a smaller range:
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//var -s %numerator -10 , %denominator 3 , %intdivide $calcint(%numerator / %denominator) , %mod $calcint(%numerator % %denominator) , %floordiv %intdivide | if (%intdivide < 0) var -s %floordiv $calcint(%floordiv - $iif(%mod,1,0)) | echo -a %floordiv vs $calc(%numerator // %denominator)
44 1 Per Amundsen
</pre>