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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# ADOT -- Vector inner or dot product. The function value is the sum of the
+# products of each pair of elements of the input vectors.
+
+real procedure adoti (a, b, npix)
+
+int a[ARB], b[ARB]
+
+real sum
+
+int npix, i
+
+begin
+ sum = 0
+ do i = 1, npix
+ sum = sum + a[i] * b[i]
+
+ return (sum)
+end