Fix up preconditioned CGM code.

[octave.git] / tests / preconditioned_conjugate_gradient_method_tests.m

diff --git a/tests/preconditioned_conjugate_gradient_method_tests.m b/tests/preconditioned_conjugate_gradient_method_tests.m
index c58eb55edb206042c80477deb3ad41d964133334..d44ee421570ead5908c49a14a959650c8cb88495 100644 (file)
--- a/tests/preconditioned_conjugate_gradient_method_tests.m
+++ b/tests/preconditioned_conjugate_gradient_method_tests.m
@@ -3,12 +3,9 @@ A = [5,1,2; ...
      2,3,7];
 
 M = eye(3);
-
 b = [1;2;3];
-
 x0 = [1;1;1];
 
-## Solved over the rationals.
 cgm  = conjugate_gradient_method(A, b, x0, 1e-6, 1000);
 pcgm = preconditioned_conjugate_gradient_method(A, M, b, x0, 1e-6, 1000);
 diff = norm(cgm - pcgm);
@@ -17,6 +14,12 @@ unit_test_equals("PCGM agrees with CGM when M == I", ...
                 true, ...
                 norm(diff) < 1e-6);
 
+pcgm_simple = simple_preconditioned_cgm(A, M, b, x0, 1e-6, 1000);
+diff = norm(pcgm_simple - pcgm);
+
+unit_test_equals("PCGM agrees with SimplePCGM when M == I", ...
+                true, ...
+                norm(diff) < 1e-6);
 
 ## Needs to be symmetric!
 M = [0.97466, 0.24345, 0.54850; ...
@@ -29,3 +32,11 @@ diff = norm(cgm - pcgm);
 unit_test_equals("PCGM agrees with CGM when M != I", ...
                 true, ...
                 norm(diff) < 1e-6);
+
+
+pcgm_simple = simple_preconditioned_cgm(A, M, b, x0, 1e-6, 1000);
+diff = norm(pcgm_simple - pcgm);
+
+unit_test_equals("PCGM agrees with Simple PCGM when M != I", ...
+                true, ...
+                norm(diff) < 1e-6);