<%@include file="includes/setup.md.rsp"%>

<%@string colname="colCumprods"%>
<%@string rowname="rowCumprods"%>
<%@meta title="${colname}() and ${rowname}() benchmarks"%>
<%@meta author="Henrik Bengtsson"%>
<%@meta date="2014-11-26"%>

<%@include file="${header}"%>


# <%@meta name="title"%>

This report benchmark the performance of <%=colname%>() and <%=rowname%>() against alternative methods.

## Alternative methods

* apply() + cumprod()


<% for (mode in c("integer", "double")) { %>

## Data type "<%=mode%>"

### Data
```r
<%=withCapture({
<%@include file="R/random-matrices.R"%>
data <- rmatrices(mode = mode, range = c(-1, 1))
})%>
```

### Results

<% for (dataLabel in names(data)) { %>
<% mprintf("%s: %s\n", mode, dataLabel)  %>
#### <%=dataLabel%> <%=mode%> matrix

```r
<%=withCapture({
X <- data[[.dataLabel.]]
gc()

colStats <- microbenchmark(
 colCumprods     = colCumprods(X),
 "apply+cumprod" = apply(X, MARGIN = 2L, FUN = cumprod),
 unit = "ms"
)

X <- t(X)
gc()

rowStats <- microbenchmark(
 rowCumprods     = rowCumprods(X),
 "apply+cumprod" = apply(X, MARGIN = 1L, FUN = cumprod),
 unit = "ms"
)
})%>
```

<% crBenchmarkResults(colStats, rowStats, tags=c(mode, dataLabel)) %>

<% } # for (dataLabel ...) %>

<% } # for (mode ...) %>


<%@include file="${footer}"%>


<%---------------------------------------------------------------------------
HISTORY:
2014-11-26
o Created.
---------------------------------------------------------------------------%>
