Arithmetic Operators

Description

These binary operators perform arithmetic on vector objects.

Usage

x + y
x - y
x * y
x / y
x ^ y
x %% y
x %/% y

Details

1 ^ y and y ^ 0 are 1, always. x ^ y should also give the proper ``limit'' result when either argument is infinite (i.e., +- Inf).

Objects such as arrays or time-series can be operated on this way provided they are conformable.

Value

They return numeric vectors containing the result of the element by element operations. The elements of shorter vectors are recycled as necessary (with a warning when they are recycled only fractionally). The operators are + for addition, - for subtraction * for multiplication, / for division and ^ for exponentiation.

%% indicates x mod y and %/% indicates integer division. It is guaranteed that x == (x %% y) + y * ( x %/% y ) unless y == 0 where the result is NA or NaN (depending on the typeof of the arguments).

See Also

Math for miscellaneous and Special for special mathematical functions.

Examples

x <- -1:12
x + 1
2 * x + 3
x %% 2 #-- is periodic
x %/% 5