add files I forgot to checkin to cvs before :)

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinAnalysis/AHFinderDirect/trunk@751 f88db872-0e4f-0410-b76b-b9085cfa78c5

1 files changed, 25 insertions, 0 deletions

diff --git a/src/gr.cg/inverse_metric.c b/src/gr.cg/inverse_metric.c
new file mode 100644
index 0000000..cb85ae0
--- /dev/null
+++ b/src/gr.cg/inverse_metric.c
@@ -0,0 +1,25 @@
+/*
+ * inputs = {g_dd}
+ * outputs = {g_uu}
+ * cost = 18*assignments+24*multiplications+divisions+13*additions
+ */
+fp t1, t2, t4, t5, t7, t8, t11, t12, t14, t15;
+fp t18, t21;
+      t1 = g_dd_22;
+      t2 = g_dd_33;
+      t4 = g_dd_23;
+      t5 = t4*t4;
+      t7 = g_dd_11;
+      t8 = t7*t1;
+      t11 = g_dd_12;
+      t12 = t11*t11;
+      t14 = g_dd_13;
+      t15 = t11*t14;
+      t18 = t14*t14;
+      t21 = 1/(t8*t2-t7*t5-t12*t2+2.0*t15*t4-t18*t1);
+      g_uu_11 = (t1*t2-t5)*t21;
+      g_uu_12 = -(t11*t2-t14*t4)*t21;
+      g_uu_13 = -(-t11*t4+t14*t1)*t21;
+      g_uu_22 = (t7*t2-t18)*t21;
+      g_uu_23 = -(t7*t4-t15)*t21;
+      g_uu_33 = (t8-t12)*t21;