Constant DEFAULT_SINGULAR_TOL 

pub const DEFAULT_SINGULAR_TOL: Tolerance;

Default absolute threshold used for singularity/degeneracy detection.

This is intentionally conservative for geometric predicates and small systems.

Conceptually, this is an absolute bound for deciding when a scalar should be treated as “numerically zero” (e.g. LU pivots, LDLT diagonal entries).

Examples

use la_stack::prelude::*;

let lu = Matrix::<2>::identity().lu(DEFAULT_SINGULAR_TOL)?;
assert_eq!(lu.det()?, 1.0);