Updates `Y` by subtracting `X`, i.e. \(Y := Y - X\).
Usage
dsub(N = NULL, X, INCX = 1L, Y, INCY = 1L)
Arguments
- N
Optional integer giving the number of elements. Defaults to `length(X)`.
- X
Double-precision vector, matrix or [`bigmemory::big.matrix`] input.
- INCX
Integer stride for traversing `X`.
- Y
Double-precision object updated in place.
- INCY
Integer stride for traversing `Y`.
Value
Invisibly returns the modified `Y`.
Examples
x <- 1:4
y <- rep(10, 4)
dsub(X = x, Y = y)
y
#> [1] 9 8 7 6
