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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
# ALAN -- Compute the logical AND of two vectors (generic). The logical
# output value is returned as an int.
procedure alanl (a, b, c, npix)
long a[ARB], b[ARB]
int c[ARB]
int npix, i
begin
do i = 1, npix
if (a[i] != 0 && b[i] != 0)
c[i] = YES
else
c[i] = NO
end
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