square root

From The K Language Wiki
Square root
%x
sqrt x

The square root function, generally denoted by %, gets the floating point square root of a given number.

It is also present in K7 and K9 as sqrt.

The result of square root is undefined for negative numbers, and returns 0n.

The square root primitive is right atomic.
 %4
2.0

 %5 7 9
2.23606797749979 2.6457513110645907 3.0

 %-20
0n

 %(22 45;(67;(99;-1)))
(4.69041575982343 6.708203932499369
 (8.18535277187245;9.9498743710662 0n))