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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ABNE -- Vector boolean not equals. C[i], type INT, is set to 1 if
+# A[i] is not equal to B[i], else C[i] is set to zero.
+
+procedure abnex (a, b, c, npix)
+
+complex a[ARB], b[ARB]
+int c[ARB]
+int npix
+int i
+
+begin
+ do i = 1, npix
+ if (a[i] != b[i])
+ c[i] = 1
+ else
+ c[i] = 0
+end