rmbl_core_stats: Fast summary statistics (C backend)

In rmoriebricklayer: Reproducible Data Capsules with Provenance and Fallback

Fast summary statistics (C backend)

Description

Thin R wrappers over the rmoriebricklayer compiled core – the same kernels that sibling packages reach through LinkingTo: rmoriebricklayer. NA/NaN values propagate (there is no na.rm); call stats::na.omit() first if you need NA handling.

Usage

core_mean(x)

core_var(x)

core_cor(x, y)

Arguments

x, y	Numeric vectors (coerced with as.numeric()).

Value

core_mean(), core_var() and core_cor() return a length-1 numeric. core_var() uses the n - 1 (sample) denominator, matching stats::var().

Examples

## core_mean(): sample mean (NA/NaN propagate; no na.rm)
core_mean(1:10)                 # 5.5
core_mean(c(2.5, 3.5))          # 3
core_mean(c(1, 2, NA))          # NA -- call stats::na.omit() first if needed
core_mean(stats::na.omit(c(1, 2, NA)))

## core_var(): n-1 (sample) variance, matching stats::var()
core_var(c(2, 4, 4, 4, 5, 5, 7, 9))
all.equal(core_var(1:10), stats::var(1:10))   # agrees with base R

## core_cor(): Pearson correlation of two equal-length vectors
core_cor(1:10, (1:10)^2)        # strong positive, near 0.97
core_cor(1:10, 10:1)            # perfect negative: -1

rmoriebricklayer documentation built on Aug. 5, 2026, 9:08 a.m.