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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <mach.h>
include <pkg/rg.h>
# RG_NEXT -- Return the next value in a set of ordered and merged ranges.
# Number is set to the next value in the set of ranges or is unchanged
# (and EOF is returned) if there are no more values.
int procedure rg_next (rg, number)
pointer rg # RANGES pointer
int number # Both input and output parameter
int next_number, i
begin
next_number = number + 1
do i = 1, RG_NRGS(rg)
if (next_number > RG_X2(rg, i)) {
next
} else if (next_number < RG_X1(rg, i)) {
number = RG_X1(rg, i)
return (number)
} else {
number = next_number
return (number)
}
return (EOF)
end
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