pub fn pfe_batch_with_kernel(
data: &[f64],
sweep: &PfeBatchRange,
k: Kernel,
) -> Result<PfeBatchOutput, PfeError>pub fn pfe_batch_with_kernel(
data: &[f64],
sweep: &PfeBatchRange,
k: Kernel,
) -> Result<PfeBatchOutput, PfeError>