sqrt¶
Square root
sqrt x sqrt[x]Returns as a float where x is numeric and
- non-negative, the square root of
x - negative or null, null
- real or float infinity,
0w - any other infinity, the square root of the largest value for the datatype
q)sqrt -1 0n 0 25 50
0n 0n 0 5 7.071068
q)sqrt 12:00:00.000000000
6572671f
q)sqrt 0Wh
181.0166
q)sqrt 101b
1 0 1fsqrt is a multithreaded primitive.
Implicit iteration¶
sqrt is an atomic function.
q)sqrt (10;20 30)
3.162278
4.472136 5.477226
q)k:`k xkey update k:`abc`def`ghi from t:flip d:`a`b!(10 21 3;4 5 6)
q)sqrt d
a| 3.162278 4.582576 1.732051
b| 2 2.236068 2.44949
q)sqrt t
a b
-----------------
3.162278 2
4.582576 2.236068
1.732051 2.44949
q)sqrt k
k | a b
---| -----------------
abc| 3.162278 2
def| 4.582576 2.236068
ghi| 1.732051 2.44949Domain and range¶
domain b g x h i j e f c s p m d z n u v t
range f . f f f f f f f . f f f z f f f fRange: fz
exp,
log,
xexp,
xlog
Mathematics