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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <pkg/rg.h>
# RG_UNPACK -- Unpack a packed array.
#
# There is no checking on the size of the arrays. The points in the
# unpacked array which are not covered by the packed array are left unchanged.
# The packed and unpacked arrays should not be the same.
procedure rg_unpack$t (rg, packed, unpacked)
pointer rg # Ranges
PIXEL packed[ARB] # Packed array
PIXEL unpacked[ARB] # Unpacked array
int i, j, x1, x2, nx
begin
if (rg == NULL)
call error (0, "Range descriptor undefined")
j = 1
do i = 1, RG_NRGS(rg) {
if (RG_X1(rg, i) < RG_X2(rg, i)) {
x1 = RG_X1(rg, i)
x2 = RG_X2(rg, i)
} else {
x1 = RG_X2(rg, i)
x2 = RG_X1(rg, i)
}
nx = x2 - x1 + 1
call amov$t (packed[j], unpacked[x1], nx)
j = j + nx
}
end
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