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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.
$if (datatype == ld)
double procedure adot$t (a, b, npix)
$else
real procedure adot$t (a, b, npix)
$endif
PIXEL a[ARB], b[ARB]
$if (datatype == ld)
double sum
$else
real sum
$endif
int npix, i
begin
sum = 0$f
do i = 1, npix
sum = sum + a[i] * b[i]
return (sum)
end
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