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Square Root: Difference between revisions
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The radical symbol for the square root has been used in mathematics for centuries, and was suggested early in APL's development by [[Eugene McDonnell]], who stated that "when I designed the APL printer trains for the IBM 1403 printer, I included the radical symbol √ on the train, in the expectation that one day this function would be added to APL."<ref>[[Eugene McDonnell]]. [https://doi.org/10.1145/22415.22050 "A perfect square root routine"] ([https://www.jsoftware.com/papers/eem/sqrt.htm web]) at [[APL86]].</ref> It was featured in [[J]] following McDonnell's design but written with the ASCII bigraph <source lang=j inline>%:</source>, and was introduced with the radical symbol by [[NARS2000]]. More recently, it was added first to [[Extended Dyalog APL]] and then to [[dzaima/APL]] in 2018. | The radical symbol for the square root has been used in mathematics for centuries, and was suggested early in APL's development by [[Eugene McDonnell]], who stated that "when I designed the APL printer trains for the IBM 1403 printer, I included the radical symbol √ on the train, in the expectation that one day this function would be added to APL."<ref>[[Eugene McDonnell]]. [https://doi.org/10.1145/22415.22050 "A perfect square root routine"] ([https://www.jsoftware.com/papers/eem/sqrt.htm web]) at [[APL86]].</ref> It was featured in [[J]] following McDonnell's design but written with the ASCII bigraph <source lang=j inline>%:</source>, and was introduced with the radical symbol by [[NARS2000]]. More recently, it was added first to [[Extended Dyalog APL]] and then to [[dzaima/APL]] in 2018. | ||
== See also == | |||
* [[Reciprocal]] | |||
== External links == | == External links == | ||
=== Documentation === | === Documentation === | ||
* [http://wiki.nars2000.org/index.php/Root NARS2000] | * [http://wiki.nars2000.org/index.php/Root NARS2000] | ||
* J [https://www.jsoftware.com/help/dictionary/d132.htm Dictionary], [https://code.jsoftware.com/wiki/Vocabulary/percentco NuVoc] | * J [https://www.jsoftware.com/help/dictionary/d132.htm Dictionary], [https://code.jsoftware.com/wiki/Vocabulary/percentco NuVoc] | ||
* [https://mlochbaum.github.io/BQN/doc/arithmetic.html#basic-arithmetic BQN] | |||
== References == | == References == | ||