1 files changed, 19 insertions, 0 deletions
diff --git a/sourcecodes/bnt-master/BNT/potentials/@cgpot/multiply_by_pot.m b/sourcecodes/bnt-master/BNT/potentials/@cgpot/multiply_by_pot.m
new file mode 100644
index 00000000..0dcad3fc
--- /dev/null
+++ b/sourcecodes/bnt-master/BNT/potentials/@cgpot/multiply_by_pot.m
@@ -0,0 +1,19 @@
+function bigpot = multiply_by_pot(bigpot, smallpot, varargin)
+% MULTIPLY_BY_POT bigpot *= smallpot for cgpot
+% bigpot = multiply_by_pot(bigpot, smallpot)
+%
+% smallpot's domain must be a subset of bigpot's domain.
+
+bigpot = cg_mom_to_can(bigpot);
+smallpot = cg_mom_to_can(smallpot);
+
+mask = find_equiv_posns(smallpot.ddom, bigpot.ddom);
+for i=1:bigpot.dsize
+  if isempty(smallpot.ddom)
+    src = 1;
+  else
+    sub = ind2subv(bigpot.dsizes, i);
+    src = subv2ind(smallpot.dsizes, sub(mask));
+  end
+  bigpot.can{i} = multiply_by_pot(bigpot.can{i}, smallpot.can{src});
+end