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authordhuth <derickhuth@gmail.com>2014-10-06 11:56:47 -0600
committerdhuth <derickhuth@gmail.com>2014-10-06 11:56:47 -0600
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+# Omega Calculator v1.2 (based on Omega Library 1.2, August, 2000):
+# # Passing array sections through array reshaping
+# # procedure foo()
+# # real a(1:5,1:64,1:64,1:5)
+# # for i = 1 to 64 do
+# # for j = 1 to 64 do
+# # bar(a(1,i,j,1))
+# # ...
+# # procedure bar(x(*))
+# # x(1:5) = ...
+# #
+# # Question which element of a are effected by the call to bar?
+# #
+# symbolic i,j;
+#
+# R := {[i1,i2,i3,i4] -> [o1] :
+# (i1-1) + (i2-i)*5 + (i3-j)*5*64 + (i4-1)*5*64*64
+# = o1-1
+# && 1 <= i1,i4 <= 5
+# && 1 <= i,j,i2,i3 <= 64};
+#
+# R;
+
+{[i1,i2,i3,i4] -> [i1-320j-5i+5i2+320i3+20480i4-20480] : 1 <= j <= 64 && 1 <= i <= 64 && 1 <= i1 <= 5 && 1 <= i2 <= 64 && 1 <= i3 <= 64 && 1 <= i4 <= 5}
+
+#
+# (inverse R)({[1:5]});
+
+{[i1,i,j,1]: 1 <= i <= 64 && 1 <= j <= 64 && 1 <= i1 <= 5}
+
+#