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#* HISTORY *
#* B.Simon 25-Aug-94 original
# Phil Hodge 28-Sept-2005 in sortdist, add 'int cmpdist()'
# SORTDIST -- Sort the dist array
procedure sortdist (ndist, dist, index)
int ndist # i: length of dist and index arrays
double dist[ARB] # i: indices of second table rows matching first
int index[ARB] # u: indices of first table rows, in sort order on exit
#--
int cmpdist()
extern cmpdist
pointer sp, dist2
begin
call smark (sp)
call salloc (dist2, ndist, TY_DOUBLE)
call amovd (dist, Memd[dist2], ndist)
call gqsort (index, ndist, cmpdist, dist2)
call sfree (sp)
end
# CMPDIST -- Compare two elements in the dist array
int procedure cmpdist (dist, ielem, jelem)
pointer dist # address of the dist array
int ielem # first element
int jelem # second element
#--
int order
begin
if (Memd[dist+ielem-1] < Memd[dist+jelem-1]) {
order = -1
} else if (Memd[dist+ielem-1] > Memd[dist+jelem-1]) {
order = 1
} else if (ielem < jelem) {
order = -1
} else if (ielem < jelem) {
order = 1
} else {
order = 0
}
return (order)
end
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