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Matrix reduction helpers for fmalloc-backed matrices

Source: R/fmalloc_methods.R
fmalloc_reduction_methods.Rd

These S3 methods preserve current fmalloc behavior for matrix summary/reduction operations while returning ordinary R vectors for small results.

Usage

rowSums(x, na.rm = FALSE, dims = 1L)

colSums(x, na.rm = FALSE, dims = 1L)

rowMeans(x, na.rm = FALSE, dims = 1L)

colMeans(x, na.rm = FALSE, dims = 1L)

Arguments

x

A matrix-like object.

na.rm

Logical scalar controlling NA removal.

dims

Numeric scalar for dimensions.

Value

The reduction result, as either an ordinary R object or a fmalloc vector when result length exceeds getOption("Rfmalloc.reduce_result_length", 1e6).

Details

These implementations keep managed execution for 2D fmalloc matrices with dims = 1L. For unsupported shapes or dims values (for example, non-2D arrays or dims != 1L), the methods warn and delegate to the base R implementations (base::rowSums, base::colSums, base::rowMeans, and base::colMeans).