Is Finite

Element-wise check if values are finite (not Inf, -Inf, or NaN). Only a float holds a non-finite value, so the answer for any other data type is all TRUE and is built as a constant rather than computed, the way base R's is.finite() answers TRUE for an integer.

Usage

nv_is_finite(x)

Arguments

x

(arrayish)
One input. Can be any data type. An R value materializes at its default data type.

Value

(arrayish)
Has the input's shape and boolean data type.

See also

prim_is_finite() for the underlying primitive, which takes a float only.

Examples

# the result is boolean, whatever float data type the input has
x <- nv_array(c(1, Inf, NaN, -Inf, 0))
nv_is_finite(x)
#> AnvlArray
#>  1
#>  0
#>  0
#>  0
#>  1
#> [ CPUbool{5} ] 

# all TRUE for an integer input, which has no non-finite value
nv_is_finite(nv_array(1:3))
#> AnvlArray
#>  1
#>  1
#>  1
#> [ CPUbool{3} ] 

# an R value materializes at its default data type before the test
nv_is_finite(1)
#> AnvlArray
#>  1
#> [ CPUbool{} ]