20 lines
441 B
R
20 lines
441 B
R
dyn.load("mat.so")
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sum1 <- function(matrix) {
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result <- 0
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for (i in seq_len(nrow(matrix))) {
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for (j in seq_len(ncol(matrix))) {
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result <- result + matrix[i, j]
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}
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}
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return(result)
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}
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sum2 <- function(matrix) {
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nrow <- nrow(matrix)
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ncol <- ncol(matrix)
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result <- .C("c_sum_matrix", as.double(matrix), as.integer(nrow), as.integer(ncol), result = double(1))$result
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return(result)
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}
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