abs
Absolute value
abs x abs[x]
Where x is a numeric, returns
the absolute value of x.
x is returned if x is null.
abs also works with temporal values, where it operates on the underlying numeric (refer to the examples below).
q)abs -1.0
1f
q)abs 10 -43 0N
10 43 0N
q)abs 1999.01.01
2000.12.31
// if we convert these to longs, we can observe they're opposite
q)"j"$1999.01.01 2000.12.31
-365 365
abs is a multithreaded primitive.
Implicit iteration
abs is an atomic function.
q)abs(10;20 -30)
10
20 30
It applies to dictionaries and tables.
Domain and range
domain b g x h i j e f c s p m d z n u v t
range i . i h i j e f i . p m d z n u v t
Range: ihjefpmdznuvt