Do reported counts add up to their total?

add_up_to() checks whether reported subgroup sizes, or other counts, sum to the reported total.

The function is vectorized over cases, but add_up_to_map() is more convenient for testing many cases.

Usage

add_up_to(summands, total)

Arguments

summands: Integer. The counts of one case, or a list with one such vector per case.
total: Integer. The reported total, one per case.

Value

Logical. TRUE if the counts add up to total, FALSE if not, and NA if a value is missing, negative, or not a whole number, or if their sum or the total reaches 2^53, beyond which a sum is no longer exact.

Examples

add_up_to(c(40, 37, 43), total = 120)
#> [1] TRUE
add_up_to(c(40, 37, 44), total = 120)
#> [1] FALSE

# Several cases:
add_up_to(list(c(40, 37, 43), c(10, 12)), total = c(120, 23))
#> [1]  TRUE FALSE