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wt_cz_c.f
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wt_cz_c.f
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C->>> -----------------------------------------> ems_sq_ed_wt_cz_1_c <<<
c Returns the best candidate variable from the set of candidates
c when the edge weights are squared.
c If bst_vr_n = 0 then none of the candidates is attractive.
c
subroutine ems_sq_ed_wt_cz_1_c(
& bp_swp_sd, en_c_n, en_sn_n,
& rsmi_lb, rsmi_ub, st,
& vr_in_c, du_act, ed_wt)
implicit none
include 'EMSV.INC'
include 'EMSPM.INC'
include 'RSMICS.INC'
include 'RSMICOM.INC'
include 'ICTVR.INC'
include 'EMSMSG.INC'
include 'RLCTVR.INC'
integer bp_swp_sd, en_c_n, en_sn_n
double precision rsmi_lb(0:mx_n_c+n_r)
double precision rsmi_ub(0:mx_n_c+n_r)
integer st(0:mx_n_c+n_r)
integer vr_in_c(-vr_in_c_n_sn:n_c)
double precision du_act(0:mx_n_c+n_r)
double precision ed_wt(0:mx_n_c+n_r)
integer c_n, vr_n
double precision vr_du_act, abs_vr_du_act, sq_du_act
double precision mx_rao
c do 1, c_n = 1, vr_in_c(os_lg_in_c_te_fx_p)
c vr_n = vr_in_c(c_n)
c write(*, '(i3, 2(2x, g11.4))')
c & vr_n, du_act(vr_n), sqrt(ed_wt(vr_n))
c 1 continue
c do 2, c_n = vr_in_c(os_struc_in_c_f_p_m1) + 1,
c & vr_in_c(os_struc_in_c_te_fx_p)
c vr_n = vr_in_c(c_n)
c write(*, '(i3, 2(2x, g11.4))')
c & vr_n, du_act(vr_n), sqrt(ed_wt(vr_n))
c 2 continue
c
c Check whether the edge weight information is correct.
c ...which implies that the strategy is appropriate.
c
if (iand(ml_da_st_msk, ml_da_st_ed_wt) .eq. 0) goto 8000
mx_rao = zero
do 10, c_n = 1, vr_in_c(os_lg_in_c_ab_bp_p)
c
c Above break point:
c
vr_n = vr_in_c(c_n)
c
c lb:co:ub are bp:uco:lco-uco
c
c Free to move up with given dual activity
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
bp_swp_sd = 0
end if
else
c
c NB: With convex cost functions it cannot be attractive to move
c both ways.
c
c Free to move down with modified dual activity
c
vr_du_act = vr_du_act + pr_co_mu*rsmi_ub(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
bp_swp_sd = -1
c
c Record the column and section number in order to swap sides if
c this variable is chosen.
c
en_c_n = c_n
en_sn_n = lg_sn_n_os + vr_in_c_sn_ty_ab_bp
end if
end if
end if
10 continue
do 20, c_n = c_n, vr_in_c(os_lg_in_c_bw_bp_p)
c
c Below break point:
c
vr_n = vr_in_c(c_n)
c
c lb:co:ub are uco-lco:lco:bp
c
c Free to move down with given dual activity
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
bp_swp_sd = 0
end if
else
c
c NB: With convex cost functions it cannot be attractive to move
c both ways.
c
c Free to move up with modified dual activity
c
vr_du_act = vr_du_act + pr_co_mu*rsmi_lb(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
bp_swp_sd = 1
c
c Record the column and section number in order to swap sides if
c this variable is chosen.
c
en_c_n = c_n
en_sn_n = lg_sn_n_os + vr_in_c_sn_ty_bw_bp
end if
end if
end if
20 continue
do 30, c_n = c_n, vr_in_c(os_lg_in_c_up_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move up or down with given dual activity.
c
abs_vr_du_act = abs(du_act(vr_n))
if (abs_vr_du_act .gt. tl_du_ifs) then
sq_du_act = abs_vr_du_act*abs_vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
c
c Set bp_swp_sd = 0 in case this is a breakpoint variable.
c
bp_swp_sd = 0
end if
end if
30 continue
if (lp_ph .eq. 1 .and.
& iand(cz_c_msk, cz_c_bk_bd_bt) .ne. 0) then
do 40, c_n = c_n, vr_in_c(os_lg_in_c_up_p)
vr_n = vr_in_c(c_n)
c
c Free to move up (from lower bound) with given dual activity.
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move up from a bound and down
c through it.
c
c Free to move down (through bound) with modified dual activity
c
vr_du_act = vr_du_act - one
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
end if
40 continue
do 45, c_n = c_n, vr_in_c(os_lg_in_c_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move down (from upper bound) with given dual activity.
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move down from a bound and up
c through it.
c
c Free to move up (through bound) with modified dual activity
c
vr_du_act = vr_du_act + one
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
end if
45 continue
c
c Consider moving from a (temporarily) fixed value.
c
do 47, c_n = c_n, vr_in_c(os_lg_in_c_te_fx_p)
vr_n = vr_in_c(c_n)
vr_du_act = du_act(vr_n) + one
if (-vr_du_act .gt. tl_du_ifs) then
c
c It is attractive to move up from a fixed value.
c
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move up from a fixed value and down
c from it
c
c It is attractive to move down from a fixed value.
c
vr_du_act = du_act(vr_n) - one
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
end if
47 continue
else
do 50, c_n = c_n, vr_in_c(os_lg_in_c_up_p)
vr_n = vr_in_c(c_n)
c
c Free to move up with given dual activity.
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
50 continue
do 55, c_n = c_n, vr_in_c(os_lg_in_c_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move down with given dual activity.
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
55 continue
endif
do 110, c_n = vr_in_c(os_struc_in_c_f_p_m1) + 1,
& vr_in_c(os_struc_in_c_ab_bp_p)
c
c Above break point:
c
vr_n = vr_in_c(c_n)
c
c lb:co:ub are bp:uco:lco-uco
c
c Free to move up with given dual activity
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
bp_swp_sd = 0
end if
else
c
c NB: With convex cost functions it cannot be attractive to move
c both ways.
c
c Free to move down with modified dual activity
c
vr_du_act = vr_du_act + pr_co_mu*rsmi_ub(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
bp_swp_sd = -1
c
c Record the column and section number in order to swap sides if
c this variable is chosen.
c
en_c_n = c_n
en_sn_n = lg_sn_n_os + vr_in_c_sn_ty_ab_bp
end if
end if
end if
110 continue
do 120, c_n = c_n, vr_in_c(os_struc_in_c_bw_bp_p)
c
c Below break point:
c
vr_n = vr_in_c(c_n)
c
c lb:co:ub are uco-lco:lco:bp
c
c Free to move down with given dual activity
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
bp_swp_sd = 0
end if
else
c
c NB: With convex cost functions it cannot be attractive to move
c both ways.
c
c Free to move up with modified dual activity
c
vr_du_act = vr_du_act + pr_co_mu*rsmi_lb(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
bp_swp_sd = 1
c
c Record the column and section number in order to swap sides if
c this variable is chosen.
c
en_c_n = c_n
en_sn_n = lg_sn_n_os + vr_in_c_sn_ty_bw_bp
end if
end if
end if
120 continue
do 130, c_n = c_n, vr_in_c(os_struc_in_c_up_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move up or down with given dual activity.
c
abs_vr_du_act = abs(du_act(vr_n))
if (abs_vr_du_act .gt. tl_du_ifs) then
sq_du_act = abs_vr_du_act*abs_vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
130 continue
if (lp_ph .eq. 1 .and.
& iand(cz_c_msk, cz_c_bk_bd_bt) .ne. 0) then
do 140, c_n = c_n, vr_in_c(os_struc_in_c_up_p)
vr_n = vr_in_c(c_n)
c
c Free to move up (from lower bound) with given dual activity.
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move up from a bound and down
c through it.
c
c Free to move down (through bound) with modified dual activity
c
vr_du_act = vr_du_act - one
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
end if
140 continue
do 145, c_n = c_n, vr_in_c(os_struc_in_c_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move down (from upper bound) with given dual activity.
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move down from a bound and up
c through it.
c
c Free to move up (through bound) with modified dual activity
c
vr_du_act = vr_du_act + one
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
end if
145 continue
c
c Consider moving from a (temporarily) fixed value.
c
do 147, c_n = c_n, vr_in_c(os_struc_in_c_te_fx_p)
vr_n = vr_in_c(c_n)
vr_du_act = du_act(vr_n) + one
if (-vr_du_act .gt. tl_du_ifs) then
c
c It is attractive to move up from a fixed value.
c
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move up from a fixed value and down
c from it
c
c It is attractive to move down from a fixed value.
c
vr_du_act = du_act(vr_n) - one
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
end if
147 continue
else
do 150, c_n = c_n, vr_in_c(os_struc_in_c_up_p)
vr_n = vr_in_c(c_n)
c
c Free to move up with given dual activity.
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
150 continue
do 155, c_n = c_n, vr_in_c(os_struc_in_c_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move down with given dual activity.
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
sq_du_act = vr_du_act*vr_du_act
if (sq_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = sq_du_act/ed_wt(vr_n)
end if
end if
155 continue
endif
7000 continue
return
8000 continue
if (ems_msg_no_prt_fm .ge. 1) write(ems_li, 9800)
call ems_msg_wr_li(bug_msg_n)
goto 7000
9800 format('Calling ems_cz_1_c with incorrect edge weights')
end
C->>> --------------------------------------------> ems_ed_wt_cz_1_c <<<
c Returns the best candidate variable from the set of candidates.
c If bst_vr_n = 0 then none of the candidates is attractive.
c
subroutine ems_ed_wt_cz_1_c(
& bp_swp_sd, en_c_n, en_sn_n,
& rsmi_lb, rsmi_ub, st,
& vr_in_c, du_act, ed_wt)
implicit none
include 'EMSV.INC'
include 'EMSPM.INC'
include 'RSMICS.INC'
include 'RSMICOM.INC'
include 'ICTVR.INC'
include 'EMSMSG.INC'
include 'RLCTVR.INC'
integer bp_swp_sd, en_c_n, en_sn_n
double precision rsmi_lb(0:mx_n_c+n_r)
double precision rsmi_ub(0:mx_n_c+n_r)
integer st(0:mx_n_c+n_r)
integer vr_in_c(-vr_in_c_n_sn:n_c)
double precision du_act(0:mx_n_c+n_r)
double precision ed_wt(0:mx_n_c+n_r)
integer c_n, vr_n
double precision vr_du_act, abs_vr_du_act
double precision mx_rao
c do 1, c_n = 1, vr_in_c(os_lg_in_c_te_fx_p)
c vr_n = vr_in_c(c_n)
c write(*, '(i3, 2(2x, g11.4))')
c & vr_n, du_act(vr_n), ed_wt(vr_n)
c 1 continue
c do 2, c_n = vr_in_c(os_struc_in_c_f_p_m1) + 1,
c & vr_in_c(os_struc_in_c_te_fx_p)
c vr_n = vr_in_c(c_n)
c write(*, '(i3, 2(2x, g11.4))')
c & vr_n, du_act(vr_n), ed_wt(vr_n)
c 2 continue
c
c Check whether the edge weight information is correct.
c ...which implies that the strategy is appropriate.
c
if (iand(ml_da_st_msk, ml_da_st_ed_wt) .eq. 0) goto 8000
mx_rao = zero
do 10, c_n = 1, vr_in_c(os_lg_in_c_ab_bp_p)
c
c Above break point:
c
vr_n = vr_in_c(c_n)
c
c lb:co:ub are bp:uco:lco-uco
c
c Free to move up with given dual activity
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
bp_swp_sd = 0
end if
else
c
c NB: With convex cost functions it cannot be attractive to move
c both ways.
c
c Free to move down with modified dual activity
c
vr_du_act = vr_du_act + pr_co_mu*rsmi_ub(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
bp_swp_sd = -1
c
c Record the column and section number in order to swap sides if
c this variable is chosen.
c
en_c_n = c_n
en_sn_n = lg_sn_n_os + vr_in_c_sn_ty_ab_bp
end if
end if
end if
10 continue
do 20, c_n = c_n, vr_in_c(os_lg_in_c_bw_bp_p)
c
c Below break point:
c
vr_n = vr_in_c(c_n)
c
c lb:co:ub are uco-lco:lco:bp
c
c Free to move down with given dual activity
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
bp_swp_sd = 0
end if
else
c
c NB: With convex cost functions it cannot be attractive to move
c both ways.
c
c Free to move up with modified dual activity
c
vr_du_act = vr_du_act + pr_co_mu*rsmi_lb(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
bp_swp_sd = 1
c
c Record the column and section number in order to swap sides if
c this variable is chosen.
c
en_c_n = c_n
en_sn_n = lg_sn_n_os + vr_in_c_sn_ty_bw_bp
end if
end if
end if
20 continue
do 30, c_n = c_n, vr_in_c(os_lg_in_c_up_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move up or down with given dual activity.
c
abs_vr_du_act = abs(du_act(vr_n))
if (abs_vr_du_act .gt. tl_du_ifs) then
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
c
c Set bp_swp_sd = 0 in case this is a breakpoint variable.
c
bp_swp_sd = 0
end if
end if
30 continue
if (lp_ph .eq. 1 .and.
& iand(cz_c_msk, cz_c_bk_bd_bt) .ne. 0) then
do 40, c_n = c_n, vr_in_c(os_lg_in_c_up_p)
vr_n = vr_in_c(c_n)
c
c Free to move up (from lower bound) with given dual activity.
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move up from a bound and down
c through it.
c
c Free to move down (through bound) with modified dual activity
c
vr_du_act = vr_du_act - one
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
end if
40 continue
do 45, c_n = c_n, vr_in_c(os_lg_in_c_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move down (from upper bound) with given dual activity.
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move down from a bound and up
c through it.
c
c Free to move up (through bound) with modified dual activity
c
vr_du_act = vr_du_act + one
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
end if
45 continue
c
c Consider moving from a (temporarily) fixed value.
c
do 47, c_n = c_n, vr_in_c(os_lg_in_c_te_fx_p)
vr_n = vr_in_c(c_n)
vr_du_act = du_act(vr_n) + one
if (-vr_du_act .gt. tl_du_ifs) then
c
c It is attractive to move up from a fixed value.
c
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move up from a fixed value and down
c from it
c
c It is attractive to move down from a fixed value.
c
vr_du_act = du_act(vr_n) - one
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
end if
47 continue
else
do 50, c_n = c_n, vr_in_c(os_lg_in_c_up_p)
vr_n = vr_in_c(c_n)
c
c Free to move up with given dual activity.
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
50 continue
do 55, c_n = c_n, vr_in_c(os_lg_in_c_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move down with given dual activity.
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
55 continue
endif
do 110, c_n = vr_in_c(os_struc_in_c_f_p_m1) + 1,
& vr_in_c(os_struc_in_c_ab_bp_p)
c
c Above break point:
c
vr_n = vr_in_c(c_n)
c
c lb:co:ub are bp:uco:lco-uco
c
c Free to move up with given dual activity
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
bp_swp_sd = 0
end if
else
c
c NB: With convex cost functions it cannot be attractive to move
c both ways.
c
c Free to move down with modified dual activity
c
vr_du_act = vr_du_act + pr_co_mu*rsmi_ub(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
bp_swp_sd = -1
c
c Record the column and section number in order to swap sides if
c this variable is chosen.
c
en_c_n = c_n
en_sn_n = lg_sn_n_os + vr_in_c_sn_ty_ab_bp
end if
end if
end if
110 continue
do 120, c_n = c_n, vr_in_c(os_struc_in_c_bw_bp_p)
c
c Below break point:
c
vr_n = vr_in_c(c_n)
c
c lb:co:ub are uco-lco:lco:bp
c
c Free to move down with given dual activity
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
bp_swp_sd = 0
end if
else
c
c NB: With convex cost functions it cannot be attractive to move
c both ways.
c
c Free to move up with modified dual activity
c
vr_du_act = vr_du_act + pr_co_mu*rsmi_lb(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
bp_swp_sd = 1
c
c Record the column and section number in order to swap sides if
c this variable is chosen.
c
en_c_n = c_n
en_sn_n = lg_sn_n_os + vr_in_c_sn_ty_bw_bp
end if
end if
end if
120 continue
do 130, c_n = c_n, vr_in_c(os_struc_in_c_up_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move up or down with given dual activity.
c
abs_vr_du_act = abs(du_act(vr_n))
if (abs_vr_du_act .gt. tl_du_ifs) then
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
130 continue
if (lp_ph .eq. 1 .and.
& iand(cz_c_msk, cz_c_bk_bd_bt) .ne. 0) then
do 140, c_n = c_n, vr_in_c(os_struc_in_c_up_p)
vr_n = vr_in_c(c_n)
c
c Free to move up (from lower bound) with given dual activity.
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move up from a bound and down
c through it.
c
c Free to move down (through bound) with modified dual activity
c
vr_du_act = vr_du_act - one
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
end if
140 continue
do 145, c_n = c_n, vr_in_c(os_struc_in_c_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move down (from upper bound) with given dual activity.
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move down from a bound and up
c through it.
c
c Free to move up (through bound) with modified dual activity
c
vr_du_act = vr_du_act + one
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
end if
145 continue
c
c Consider moving from a (temporarily) fixed value.
c
do 147, c_n = c_n, vr_in_c(os_struc_in_c_te_fx_p)
vr_n = vr_in_c(c_n)
vr_du_act = du_act(vr_n) + one
if (-vr_du_act .gt. tl_du_ifs) then
c
c It is attractive to move up from a fixed value.
c
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
else
c
c NB: It cannot be attractive to move up from a fixed value and down
c from it
c
c It is attractive to move down from a fixed value.
c
vr_du_act = du_act(vr_n) - one
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
end if
147 continue
else
do 150, c_n = c_n, vr_in_c(os_struc_in_c_up_p)
vr_n = vr_in_c(c_n)
c
c Free to move up with given dual activity.
c
vr_du_act = du_act(vr_n)
if (-vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = -vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
150 continue
do 155, c_n = c_n, vr_in_c(os_struc_in_c_dn_p)
vr_n = vr_in_c(c_n)
c
c Free to move down with given dual activity.
c
vr_du_act = du_act(vr_n)
if (vr_du_act .gt. tl_du_ifs) then
abs_vr_du_act = vr_du_act
if (abs_vr_du_act .gt. mx_rao*ed_wt(vr_n)) then
nx_vr_t_en_bs = vr_n
mx_rao = abs_vr_du_act/ed_wt(vr_n)
end if
end if
155 continue
endif
7000 continue
return
8000 continue
if (ems_msg_no_prt_fm .ge. 1) write(ems_li, 9800)
call ems_msg_wr_li(bug_msg_n)
goto 7000
9800 format('Calling ems_cz_1_c with incorrect edge weights')
end