lax_friedrichs_split_both Subroutine

private pure subroutine lax_friedrichs_split_both(q, fp, fm, gam)

Fused Lax-Friedrichs flux splitting: returns F^+ and F^- in one call.

Equivalent to calling lax_friedrichs_split twice (sign=+1 and sign=-1), but extracts primitives and computes the Euler flux only once per cell.

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=wp),	intent(in)			::	q(:)
real(kind=wp),	intent(out)			::	fp(:)
real(kind=wp),	intent(out)			::	fm(:)
real(kind=wp),	intent(in)			::	gam	Ratio of specific heats.