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subroutine blnumz(nzm,nzero,zzr,zzi,b2,b1,b0,nze)
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c build numerator blocks of second order
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implicit double precision (a-h,o-z)
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dimension nzm(*),nzero(*),zzr(*),zzi(*)
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double precision b0(*),b1(*),b2(*)
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20 if (nz.eq.0) go to 70
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30 if (i.eq.me) go to 60
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if (zzi(ii).eq.0.0d+0) go to 50