% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/read.R
\name{.cbf_lt}
\alias{.cbf_lt}
\title{Normalise (row, col) to lower-triangular form by swapping if row < col.}
\usage{
.cbf_lt(row, col)
}
\arguments{
\item{row}{0-based row index.}

\item{col}{0-based column index.}
}
\value{
Integer vector \code{c(row, col)} with \code{row >= col}.
}
\description{
CBF stores only one triangular half of each symmetric matrix.  Most files
use the lower triangle (row >= col), but some generators emit upper-
triangular entries.  Since X[row,col] = X[col,row] for symmetric X, we
always swap to the lower triangle before computing the svec index.
}
\keyword{internal}
