https://github.com/cran/aster
Tip revision: 63c8e8a453ea587001e2438a8ce51cf0e1e1675c authored by Charles J. Geyer on 23 March 2009, 00:00:00 UTC
version 0.7-7
version 0.7-7
Tip revision: 63c8e8a
matops.Rout.save
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>
> library(aster)
>
> set.seed(42)
>
> m <- 10
> n <- 5
> a <- matrix(rnorm(m * n), nrow = m)
> b <- rnorm(n)
>
> out <- .C("aster_mat_vec_mult",
+ nrow = as.integer(m),
+ ncol = as.integer(n),
+ a = as.double(a),
+ b = as.double(b),
+ c = double(m))
>
> all.equal(out$c, as.numeric(a %*% b))
[1] TRUE
>
> ##########
>
> b <- rnorm(m)
>
> out <- .C("aster_vec_mat_mult",
+ nrow = as.integer(m),
+ ncol = as.integer(n),
+ a = as.double(a),
+ b = as.double(b),
+ c = double(n))
>
> all.equal(out$c, as.numeric(b %*% a))
[1] TRUE
>
> ##########
>
> out <- .C("aster_mat_vec_mat_mult",
+ nrow = as.integer(m),
+ ncol = as.integer(n),
+ a = as.double(a),
+ b = as.double(b),
+ c = matrix(as.double(0), n, n))
>
> all.equal(out$c, t(a) %*% diag(b) %*% a)
[1] TRUE
>
> ##########
>
> b <- matrix(rnorm(n * n), n)
>
> out <- .C("aster_diag_mat_mat_mat_mult",
+ nrow = as.integer(m),
+ ncol = as.integer(n),
+ a = as.double(a),
+ b = as.double(b),
+ c = double(m))
>
> all.equal(out$c, diag(a %*% b %*% t(a)))
[1] TRUE
>
>