| 1 | *** For comments, see sbart.r, written by Finbarr O'Sullivan |
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| 2 | *** ratfor output of 14 May 1987 version |
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| 3 | *** with bug fix in setreg, 27 Sep 1990 |
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| 4 | module modsbart |
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| 5 | contains |
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| 6 | subroutine sbart(xs,ys,ws,n,knot,nk,coef,sz,lev,crit,icrit,spar, |
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| 7 | &ispar,lspar,uspar,tol,isetup,xwy,hs0,hs1,hs2,hs3,sg0,sg1,sg2,sg3, |
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| 8 | &abd,p1ip,p2ip,ld4,ldnk,ier) bind(c, name='sbart') |
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| 9 | USE ISO_C_BINDING |
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| 10 | !DEC$ ATTRIBUTES DLLEXPORT::sbart |
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| 11 | real xs(n),ys(n),ws(n),knot(nk+4),coef(nk),sz(n),lev(n),crit,spar, |
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| 12 | &lspar,uspar,tol,xwy(nk),hs0(nk),hs1(nk),hs2(nk),hs3(nk), sg0(nk), |
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| 13 | &sg1(nk),sg2(nk),sg3(nk),abd(ld4,nk),p1ip(ld4,nk),p2ip(ldnk,nk) |
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| 14 | integer n,nk,isetup,icrit,ispar,ld4,ldnk,ier |
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| 15 | realt1,t2,ratio, a,b,c,d,e,eps,xm,p,q,r,tol1,tol2,u,v,w, fu,fv,fw, |
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| 16 | &fx,x,ax,bx |
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| 17 | integer i |
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| 18 | if(.not.(isetup.eq.0))goto 23000 |
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| 19 | call sgram(sg0,sg1,sg2,sg3,knot,nk) |
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| 20 | call stxwx(xs,ys,ws,n,knot,nk,xwy,hs0,hs1,hs2,hs3) |
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| 21 | t1=0. |
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| 22 | t2=0. |
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| 23 | do 23002 i=3,nk-3 |
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| 24 | t1 = t1 + hs0(i) |
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| 25 | 23002 continue |
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| 26 | do 23004 i=3,nk-3 |
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| 27 | t2 = t2 + sg0(i) |
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| 28 | 23004 continue |
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| 29 | ratio = t1/t2 |
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| 30 | isetup = 1 |
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| 31 | 23000 continue |
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| 32 | if(.not.(ispar.eq.1))goto 23006 |
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| 33 | call sslvrg(xs,ys,ws,n,knot,nk,coef,sz,lev,crit,icrit,spar,ratio, |
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| 34 | &xwy,hs0,hs1,hs2,hs3,sg0,sg1,sg2,sg3,abd,p1ip,p2ip,ld4,ldnk,ier) |
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| 35 | return |
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| 36 | 23006 continue |
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| 37 | ax=lspar |
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| 38 | bx=uspar |
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| 39 | c = 0.5*(3. - sqrt(5.0)) |
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| 40 | eps = 1.00 |
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| 41 | 10 eps = eps/2.00 |
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| 42 | tol1 = 1.0 + eps |
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| 43 | if(.not.(tol1 .gt. 1.00))goto 23008 |
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| 44 | go to 10 |
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| 45 | 23008 continue |
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| 46 | eps = sqrt(eps) |
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| 47 | a = ax |
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| 48 | b = bx |
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| 49 | v = a + c*(b - a) |
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| 50 | w = v |
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| 51 | x = v |
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| 52 | e = 0.0 |
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| 53 | spar = x |
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| 54 | call sslvrg(xs,ys,ws,n,knot,nk,coef,sz,lev,crit,icrit,spar,ratio, |
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| 55 | &xwy,hs0,hs1,hs2,hs3,sg0,sg1,sg2,sg3,abd,p1ip,p2ip,ld4,ldnk,ier) |
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| 56 | fx = crit |
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| 57 | fv = fx |
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| 58 | fw = fx |
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| 59 | 20 xm = 0.5*(a + b) |
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| 60 | tol1 = eps*abs(x) + tol/3.0 |
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| 61 | tol2 = 2.0*tol1 |
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| 62 | if(.not.(abs(x - xm) .le. (tol2 - 0.5*(b - a))))goto 23010 |
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| 63 | go to 90 |
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| 64 | 23010 continue |
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| 65 | if(.not.(abs(e) .le. tol1))goto 23012 |
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| 66 | go to 40 |
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| 67 | 23012 continue |
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| 68 | r = (x - w)*(fx - fv) |
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| 69 | q = (x - v)*(fx - fw) |
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| 70 | p = (x - v)*q - (x - w)*r |
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| 71 | q = 2.00*(q - r) |
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| 72 | if(.not.(q .gt. 0.0))goto 23014 |
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| 73 | p = -p |
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| 74 | 23014 continue |
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| 75 | q = abs(q) |
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| 76 | r = e |
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| 77 | e = d |
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| 78 | 30 if(.not.(abs(p) .ge. abs(0.5*q*r)))goto 23016 |
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| 79 | go to 40 |
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| 80 | 23016 continue |
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| 81 | if(.not.(p .le. q*(a - x)))goto 23018 |
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| 82 | go to 40 |
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| 83 | 23018 continue |
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| 84 | if(.not.(p .ge. q*(b - x)))goto 23020 |
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| 85 | go to 40 |
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| 86 | 23020 continue |
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| 87 | d = p/q |
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| 88 | u = x + d |
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| 89 | if(.not.((u - a) .lt. tol2))goto 23022 |
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| 90 | d = sign(tol1, xm - x) |
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| 91 | 23022 continue |
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| 92 | if(.not.((b - u) .lt. tol2))goto 23024 |
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| 93 | d = sign(tol1, xm - x) |
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| 94 | 23024 continue |
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| 95 | go to 50 |
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| 96 | 40 if(.not.(x .ge. xm))goto 23026 |
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| 97 | e = a - x |
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| 98 | 23026 continue |
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| 99 | if(.not.(x .lt. xm))goto 23028 |
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| 100 | e = b - x |
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| 101 | 23028 continue |
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| 102 | d = c*e |
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| 103 | 50 if(.not.(abs(d) .ge. tol1))goto 23030 |
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| 104 | u = x + d |
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| 105 | 23030 continue |
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| 106 | if(.not.(abs(d) .lt. tol1))goto 23032 |
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| 107 | u = x + sign(tol1, d) |
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| 108 | 23032 continue |
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| 109 | spar = u |
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| 110 | call sslvrg(xs,ys,ws,n,knot,nk,coef,sz,lev,crit,icrit,spar,ratio, |
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| 111 | &xwy,hs0,hs1,hs2,hs3,sg0,sg1,sg2,sg3,abd,p1ip,p2ip,ld4,ldnk,ier) |
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| 112 | fu = crit |
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| 113 | if(.not.(fu .gt. fx))goto 23034 |
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| 114 | go to 60 |
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| 115 | 23034 continue |
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| 116 | if(.not.(u .ge. x))goto 23036 |
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| 117 | a = x |
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| 118 | 23036 continue |
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| 119 | if(.not.(u .lt. x))goto 23038 |
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| 120 | b = x |
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| 121 | 23038 continue |
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| 122 | v = w |
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| 123 | fv = fw |
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| 124 | w = x |
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| 125 | fw = fx |
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| 126 | x = u |
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| 127 | fx = fu |
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| 128 | go to 20 |
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| 129 | 60 if(.not.(u .lt. x))goto 23040 |
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| 130 | a = u |
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| 131 | 23040 continue |
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| 132 | if(.not.(u .ge. x))goto 23042 |
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| 133 | b = u |
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| 134 | 23042 continue |
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| 135 | if(.not.(fu .le. fw))goto 23044 |
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| 136 | go to 70 |
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| 137 | 23044 continue |
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| 138 | if(.not.(w .eq. x))goto 23046 |
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| 139 | go to 70 |
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| 140 | 23046 continue |
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| 141 | if(.not.(fu .le. fv))goto 23048 |
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| 142 | go to 80 |
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| 143 | 23048 continue |
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| 144 | if(.not.(v .eq. x))goto 23050 |
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| 145 | go to 80 |
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| 146 | 23050 continue |
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| 147 | if(.not.(v .eq. w))goto 23052 |
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| 148 | go to 80 |
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| 149 | 23052 continue |
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| 150 | go to 20 |
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| 151 | 70 v = w |
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| 152 | fv = fw |
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| 153 | w = u |
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| 154 | fw = fu |
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| 155 | go to 20 |
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| 156 | 80 v = u |
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| 157 | fv = fu |
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| 158 | go to 20 |
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| 159 | 90 continue |
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| 160 | spar = x |
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| 161 | crit = fx |
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| 162 | return |
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| 163 | 23007 continue |
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| 164 | return |
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| 165 | end |
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| 166 | subroutine sgram(sg0,sg1,sg2,sg3,tb,nb) |
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| 167 | real sg0(nb),sg1(nb),sg2(nb),sg3(nb),tb(nb+4),vnikx(4,3),work(16), |
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| 168 | &yw1(4),yw2(4),wpt |
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| 169 | integer nb,ileft,ilo,mflag,i,ii,jj |
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| 170 | do 23054 i=1,nb |
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| 171 | sg0(i)=0. |
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| 172 | sg1(i)=0. |
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| 173 | sg2(i)=0. |
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| 174 | sg3(i)=0. |
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| 175 | 23054 continue |
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| 176 | ilo = 1 |
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| 177 | do 23056 i=1,nb |
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| 178 | call interv(tb(1),(nb+1),tb(i),ileft,mflag) |
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| 179 | call bsplvd (tb,4,tb(i),ileft,work,vnikx,3) |
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| 180 | do 23058 ii=1,4 |
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| 181 | yw1(ii) = vnikx(ii,3) |
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| 182 | 23058 continue |
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| 183 | call bsplvd (tb,4,tb(i+1),ileft,work,vnikx,3) |
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| 184 | do 23060 ii=1,4 |
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| 185 | yw2(ii) = vnikx(ii,3) - yw1(ii) |
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| 186 | 23060 continue |
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| 187 | wpt = tb(i+1) - tb(i) |
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| 188 | if(.not.(ileft.ge.4))goto 23062 |
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| 189 | do 23064 ii=1,4 |
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| 190 | jj=ii |
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| 191 | sg0(ileft-4+ii) = sg0(ileft-4+ii) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 192 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 193 | jj=ii+1 |
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| 194 | if(.not.(jj.le.4))goto 23066 |
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| 195 | sg1(ileft+ii-4) = sg1(ileft+ii-4) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 196 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 197 | 23066 continue |
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| 198 | jj=ii+2 |
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| 199 | if(.not.(jj.le.4))goto 23068 |
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| 200 | sg2(ileft+ii-4) = sg2(ileft+ii-4) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 201 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 202 | 23068 continue |
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| 203 | jj=ii+3 |
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| 204 | if(.not.(jj.le.4))goto 23070 |
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| 205 | sg3(ileft+ii-4) = sg3(ileft+ii-4) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 206 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 207 | 23070 continue |
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| 208 | 23064 continue |
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| 209 | goto 23063 |
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| 210 | 23062 continue |
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| 211 | if(.not.(ileft.eq.3))goto 23072 |
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| 212 | do 23074 ii=1,3 |
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| 213 | jj=ii |
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| 214 | sg0(ileft-3+ii) = sg0(ileft-3+ii) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 215 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 216 | jj=ii+1 |
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| 217 | if(.not.(jj.le.3))goto 23076 |
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| 218 | sg1(ileft+ii-3) = sg1(ileft+ii-3) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 219 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 220 | 23076 continue |
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| 221 | jj=ii+2 |
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| 222 | if(.not.(jj.le.3))goto 23078 |
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| 223 | sg2(ileft+ii-3) = sg2(ileft+ii-3) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 224 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 225 | 23078 continue |
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| 226 | 23074 continue |
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| 227 | goto 23073 |
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| 228 | 23072 continue |
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| 229 | if(.not.(ileft.eq.2))goto 23080 |
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| 230 | do 23082 ii=1,2 |
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| 231 | jj=ii |
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| 232 | sg0(ileft-2+ii) = sg0(ileft-2+ii) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 233 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 234 | jj=ii+1 |
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| 235 | if(.not.(jj.le.2))goto 23084 |
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| 236 | sg1(ileft+ii-2) = sg1(ileft+ii-2) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 237 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 238 | 23084 continue |
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| 239 | 23082 continue |
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| 240 | goto 23081 |
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| 241 | 23080 continue |
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| 242 | if(.not.(ileft.eq.1))goto 23086 |
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| 243 | do 23088 ii=1,1 |
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| 244 | jj=ii |
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| 245 | sg0(ileft-1+ii) = sg0(ileft-1+ii) +wpt* (yw1(ii)*yw1(jj) + (yw2( |
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| 246 | &ii)*yw1(jj) + yw2(jj)*yw1(ii))*.50 +yw2(ii)*yw2(jj)*.3330 ) |
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| 247 | 23088 continue |
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| 248 | 23086 continue |
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| 249 | 23081 continue |
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| 250 | 23073 continue |
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| 251 | 23063 continue |
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| 252 | 23056 continue |
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| 253 | return |
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| 254 | end |
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| 255 | subroutine sinerp(abd,ld4,nk,p1ip,p2ip,ldnk,flag) |
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| 256 | realabd(ld4,nk),p1ip(ld4,nk),p2ip(ldnk,nk),wjm3(3),wjm2(2),wjm1(1) |
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| 257 | &,c0,c1,c2,c3 |
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| 258 | integerflag,ld4,nk,ldnk,i,j,k |
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| 259 | wjm3(1)=0. |
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| 260 | wjm3(2)=0. |
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| 261 | wjm3(1)=0. |
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| 262 | wjm2(1)=0. |
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| 263 | wjm2(2)=0. |
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| 264 | wjm1(1)=0. |
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| 265 | do 23090 i=1,nk |
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| 266 | j=nk-i+1 |
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| 267 | c0 = 1./abd(4,j) |
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| 268 | if(.not.(j.le.nk-3))goto 23092 |
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| 269 | c1 = abd(1,j+3)*c0 |
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| 270 | c2 = abd(2,j+2)*c0 |
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| 271 | c3 = abd(3,j+1)*c0 |
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| 272 | goto 23093 |
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| 273 | 23092 continue |
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| 274 | if(.not.(j.eq.nk-2))goto 23094 |
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| 275 | c1 = 0. |
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| 276 | c2 = abd(2,j+2)*c0 |
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| 277 | c3 = abd(3,j+1)*c0 |
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| 278 | goto 23095 |
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| 279 | 23094 continue |
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| 280 | if(.not.(j.eq.nk-1))goto 23096 |
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| 281 | c1 = 0. |
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| 282 | c2 = 0. |
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| 283 | c3 = abd(3,j+1)*c0 |
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| 284 | goto 23097 |
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| 285 | 23096 continue |
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| 286 | if(.not.(j.eq.nk))goto 23098 |
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| 287 | c1 = 0. |
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| 288 | c2 = 0. |
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| 289 | c3 = 0. |
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| 290 | 23098 continue |
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| 291 | 23097 continue |
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| 292 | 23095 continue |
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| 293 | 23093 continue |
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| 294 | p1ip(1,j) = 0. - (c1*wjm3(1)+c2*wjm3(2)+c3*wjm3(3)) |
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| 295 | p1ip(2,j) = 0. - (c1*wjm3(2)+c2*wjm2(1)+c3*wjm2(2)) |
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| 296 | p1ip(3,j) = 0. - (c1*wjm3(3)+c2*wjm2(2)+c3*wjm1(1)) |
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| 297 | p1ip(4,j) = c0**2 +c1**2*wjm3(1)+2.*c1*c2*wjm3(2)+2.*c1*c3*wjm3(3) |
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| 298 | & +c2**2*wjm2(1)+2.*c2*c3*wjm2(2) +c3**2*wjm1(1) |
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| 299 | wjm3(1)=wjm2(1) |
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| 300 | wjm3(2)=wjm2(2) |
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| 301 | wjm3(3)=p1ip(2,j) |
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| 302 | wjm2(1)=wjm1(1) |
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| 303 | wjm2(2)=p1ip(3,j) |
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| 304 | wjm1(1)=p1ip(4,j) |
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| 305 | 23090 continue |
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| 306 | if(.not.(flag.eq.0))goto 23100 |
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| 307 | return |
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| 308 | 23100 continue |
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| 309 | do 23102 i=1,nk |
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| 310 | j=nk-i+1 |
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| 311 | k=1 |
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| 312 | 23104 if(.not.(k.le.4.and.j+k-1.le.nk))goto 23106 |
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| 313 | p2ip(j,j+k-1) = p1ip(5-k,j) |
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| 314 | k=k+1 |
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| 315 | goto 23104 |
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| 316 | 23106 continue |
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| 317 | 23102 continue |
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| 318 | do 23107 i=1,nk |
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| 319 | j=nk-i+1 |
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| 320 | k=j-4 |
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| 321 | 23109 if(.not.(k.ge.1))goto 23111 |
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| 322 | c0 = 1./abd(4,k) |
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| 323 | c1 = abd(1,k+3)*c0 |
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| 324 | c2 = abd(2,k+2)*c0 |
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| 325 | c3 = abd(3,k+1)*c0 |
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| 326 | p2ip(k,j) = 0. - ( c1*p2ip(k+3,j) +c2*p2ip(k+2,j) +c3*p2ip(k+1,j) |
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| 327 | &) |
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| 328 | k=k-1 |
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| 329 | goto 23109 |
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| 330 | 23111 continue |
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| 331 | 23107 continue |
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| 332 | return |
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| 333 | 23101 continue |
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| 334 | end |
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| 335 | subroutine sslvrg(x,y,w,n,knot,nk,coef,sz,lev,crit,icrit,spar, |
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| 336 | &ratio,xwy,hs0,hs1,hs2,hs3,sg0,sg1,sg2,sg3,abd,p1ip,p2ip,ld4,ldnk, |
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| 337 | &info) |
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| 338 | USE MODBVALUE |
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| 339 | real x(n),y(n),w(n),knot(nk+4),coef(nk),sz(n),lev(n),crit,ratio, |
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| 340 | &spar,xwy(nk),hs0(nk),hs1(nk),hs2(nk),hs3(nk), sg0(nk),sg1(nk),sg2( |
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| 341 | &nk),sg3(nk),abd(ld4,nk),p1ip(ld4,nk),p2ip(ldnk,nk),lambda,b0,b1, |
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| 342 | &b2,b3,eps,vnikx(4,1),work(16),xv,rss,df |
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| 343 | integer n,nk,icrit,ld4,ldnk,i,icoef,ileft,ilo,info,j,mflag |
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| 344 | ilo = 1 |
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| 345 | eps = .1e-10 |
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| 346 | lambda = ratio*16.**(-2. + spar*(6.)) |
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| 347 | do 23112 i=1,nk |
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| 348 | coef(i) = xwy(i) |
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| 349 | 23112 continue |
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| 350 | do 23114 i=1,nk |
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| 351 | abd(4,i) = hs0(i)+lambda*sg0(i) |
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| 352 | 23114 continue |
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| 353 | do 23116 i=1,(nk-1) |
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| 354 | abd(3,i+1) = hs1(i)+lambda*sg1(i) |
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| 355 | 23116 continue |
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| 356 | do 23118 i=1,(nk-2) |
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| 357 | abd(2,i+2) = hs2(i)+lambda*sg2(i) |
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| 358 | 23118 continue |
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| 359 | do 23120 i=1,(nk-3) |
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| 360 | abd(1,i+3) = hs3(i)+lambda*sg3(i) |
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| 361 | 23120 continue |
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| 362 | call spbfa(abd,ld4,nk,3,info) |
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| 363 | if(.not.(info.ne.0))goto 23122 |
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| 364 | return |
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| 365 | 23122 continue |
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| 366 | call spbsl(abd,ld4,nk,3,coef) |
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| 367 | icoef = 1 |
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| 368 | do 23124 i=1,n |
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| 369 | xv = x(i) |
|---|
| 370 | sz(i) = bvalue(knot,coef,nk,4,xv,0) |
|---|
| 371 | 23124 continue |
|---|
| 372 | if(.not.(icrit.eq.0))goto 23126 |
|---|
| 373 | return |
|---|
| 374 | 23126 continue |
|---|
| 375 | call sinerp(abd,ld4,nk,p1ip,p2ip,ldnk,0) |
|---|
| 376 | do 23128 i=1,n |
|---|
| 377 | xv = x(i) |
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| 378 | call interv(knot(1),(nk+1),xv,ileft,mflag) |
|---|
| 379 | if(.not.(mflag.eq.-1))goto 23130 |
|---|
| 380 | ileft = 4 |
|---|
| 381 | xv = knot(4)+eps |
|---|
| 382 | 23130 continue |
|---|
| 383 | if(.not.(mflag.eq.1))goto 23132 |
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| 384 | ileft = nk |
|---|
| 385 | xv = knot(nk+1)-eps |
|---|
| 386 | 23132 continue |
|---|
| 387 | j=ileft-3 |
|---|
| 388 | call bsplvd(knot,4,xv,ileft,work,vnikx,1) |
|---|
| 389 | b0=vnikx(1,1) |
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| 390 | b1=vnikx(2,1) |
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| 391 | b2=vnikx(3,1) |
|---|
| 392 | b3=vnikx(4,1) |
|---|
| 393 | lev(i) = (p1ip(4,j)*b0**2 + 2.*p1ip(3,j)*b0*b1 +2.*p1ip(2,j)*b0* |
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| 394 | &b2 + 2.*p1ip(1,j)*b0*b3 +p1ip(4,j+1)*b1**2 + 2.*p1ip(3,j+1)*b1*b2 |
|---|
| 395 | &+2.*p1ip(2,j+1)*b1*b3 +p1ip(4,j+2)*b2**2 + 2.*p1ip(3,j+2)*b2*b3 + |
|---|
| 396 | &p1ip(4,j+3)*b3**2 )*w(i)**2 |
|---|
| 397 | 23128 continue |
|---|
| 398 | if(.not.(icrit.eq.1))goto 23134 |
|---|
| 399 | rss = 0. |
|---|
| 400 | df = 0. |
|---|
| 401 | do 23136 i=1,n |
|---|
| 402 | rss = rss + ((y(i)-sz(i))*w(i))**2 |
|---|
| 403 | 23136 continue |
|---|
| 404 | do 23138 i=1,n |
|---|
| 405 | df = df + 1.-lev(i) |
|---|
| 406 | 23138 continue |
|---|
| 407 | crit = (rss/n)/((df/n)**2) |
|---|
| 408 | goto 23135 |
|---|
| 409 | 23134 continue |
|---|
| 410 | crit = 0. |
|---|
| 411 | do 23140 i=1,n |
|---|
| 412 | crit = crit +(((y(i)-sz(i))*w(i))/(1-lev(i)))**2 |
|---|
| 413 | 23140 continue |
|---|
| 414 | 23135 continue |
|---|
| 415 | return |
|---|
| 416 | 23127 continue |
|---|
| 417 | end |
|---|
| 418 | subroutine stxwx(x,z,w,k,xknot,n,y,hs0,hs1,hs2,hs3) |
|---|
| 419 | real z(k),w(k),x(k),xknot(n+4),y(n),hs0(n),hs1(n),hs2(n),hs3(n), |
|---|
| 420 | &eps,vnikx(4,1),work(16) |
|---|
| 421 | integer k,n,j,i,ilo,ileft,mflag |
|---|
| 422 | do 23142 i=1,n |
|---|
| 423 | y(i)=0. |
|---|
| 424 | hs0(i)=0. |
|---|
| 425 | hs1(i)=0. |
|---|
| 426 | hs2(i)=0. |
|---|
| 427 | hs3(i)=0. |
|---|
| 428 | 23142 continue |
|---|
| 429 | ilo=1 |
|---|
| 430 | eps = .1e-9 |
|---|
| 431 | do 23144 i=1,k |
|---|
| 432 | call interv(xknot(1),(n+1),x(i),ileft,mflag) |
|---|
| 433 | if(.not.(mflag.eq.-1))goto 23146 |
|---|
| 434 | write(6,'("Error in hess ",i2)')mflag |
|---|
| 435 | stop |
|---|
| 436 | 23146 continue |
|---|
| 437 | if(.not.(mflag.eq. 1))goto 23148 |
|---|
| 438 | if(.not.(x(i).le.(xknot(ileft)+eps)))goto 23150 |
|---|
| 439 | ileft=ileft-1 |
|---|
| 440 | goto 23151 |
|---|
| 441 | 23150 continue |
|---|
| 442 | write(6,'("Error in hess ",i2)')mflag |
|---|
| 443 | stop |
|---|
| 444 | 23151 continue |
|---|
| 445 | 23148 continue |
|---|
| 446 | call bsplvd (xknot,4,x(i),ileft,work,vnikx,1) |
|---|
| 447 | j= ileft-4+1 |
|---|
| 448 | y(j) = y(j)+w(i)**2*z(i)*vnikx(1,1) |
|---|
| 449 | hs0(j)=hs0(j)+w(i)**2*vnikx(1,1)**2 |
|---|
| 450 | hs1(j)=hs1(j)+w(i)**2*vnikx(1,1)*vnikx(2,1) |
|---|
| 451 | hs2(j)=hs2(j)+w(i)**2*vnikx(1,1)*vnikx(3,1) |
|---|
| 452 | hs3(j)=hs3(j)+w(i)**2*vnikx(1,1)*vnikx(4,1) |
|---|
| 453 | j= ileft-4+2 |
|---|
| 454 | y(j) = y(j)+w(i)**2*z(i)*vnikx(2,1) |
|---|
| 455 | hs0(j)=hs0(j)+w(i)**2*vnikx(2,1)**2 |
|---|
| 456 | hs1(j)=hs1(j)+w(i)**2*vnikx(2,1)*vnikx(3,1) |
|---|
| 457 | hs2(j)=hs2(j)+w(i)**2*vnikx(2,1)*vnikx(4,1) |
|---|
| 458 | j= ileft-4+3 |
|---|
| 459 | y(j) = y(j)+w(i)**2*z(i)*vnikx(3,1) |
|---|
| 460 | hs0(j)=hs0(j)+w(i)**2*vnikx(3,1)**2 |
|---|
| 461 | hs1(j)=hs1(j)+w(i)**2*vnikx(3,1)*vnikx(4,1) |
|---|
| 462 | j= ileft-4+4 |
|---|
| 463 | y(j) = y(j)+w(i)**2*z(i)*vnikx(4,1) |
|---|
| 464 | hs0(j)=hs0(j)+w(i)**2*vnikx(4,1)**2 |
|---|
| 465 | 23144 continue |
|---|
| 466 | return |
|---|
| 467 | end |
|---|
| 468 | subroutine sknotl(x,n,knot,k) bind(C,name='sknotl') |
|---|
| 469 | USE ISO_C_BINDING |
|---|
| 470 | !DEC$ ATTRIBUTES DLLEXPORT::sknotl |
|---|
| 471 | real x(n),knot(n+6),a1,a2,a3,a4 |
|---|
| 472 | integer n,k,ndk,j |
|---|
| 473 | a1 = log(50.)/log(2.) |
|---|
| 474 | a2 = log(100.)/log(2.) |
|---|
| 475 | a3 = log(140.)/log(2.) |
|---|
| 476 | a4 = log(200.)/log(2.) |
|---|
| 477 | if(.not.(n.lt.50))goto 23152 |
|---|
| 478 | ndk = n |
|---|
| 479 | goto 23153 |
|---|
| 480 | 23152 continue |
|---|
| 481 | if(.not.(n.ge.50 .and. n.lt.200))goto 23154 |
|---|
| 482 | ndk = 2.**(a1+(a2-a1)*(n-50.)/150.) |
|---|
| 483 | goto 23155 |
|---|
| 484 | 23154 continue |
|---|
| 485 | if(.not.(n.ge.200 .and. n.lt.800))goto 23156 |
|---|
| 486 | ndk = 2.**(a2+(a3-a2)*(n-200.)/600.) |
|---|
| 487 | goto 23157 |
|---|
| 488 | 23156 continue |
|---|
| 489 | if(.not.(n.ge.800 .and. n.lt.3200))goto 23158 |
|---|
| 490 | ndk = 2.**(a3+(a4-a3)*(n-800.)/2400.) |
|---|
| 491 | goto 23159 |
|---|
| 492 | 23158 continue |
|---|
| 493 | if(.not.(n.ge.3200))goto 23160 |
|---|
| 494 | ndk = 200. + (n-3200)**.2 |
|---|
| 495 | 23160 continue |
|---|
| 496 | 23159 continue |
|---|
| 497 | 23157 continue |
|---|
| 498 | 23155 continue |
|---|
| 499 | 23153 continue |
|---|
| 500 | k = ndk + 6 |
|---|
| 501 | do 23162 j=1,3 |
|---|
| 502 | knot(j) = x(1) |
|---|
| 503 | 23162 continue |
|---|
| 504 | do 23164 j=1,ndk |
|---|
| 505 | knot(j+3) = x( 1 + (j-1)*(n-1)/(ndk-1) ) |
|---|
| 506 | 23164 continue |
|---|
| 507 | do 23166 j=1,3 |
|---|
| 508 | knot(ndk+3+j) = x(n) |
|---|
| 509 | 23166 continue |
|---|
| 510 | return |
|---|
| 511 | end |
|---|
| 512 | subroutine setreg(x,y,w,n,xw,nx,min,range,knot,nk) |
|---|
| 513 | . bind(C,name='setreg') |
|---|
| 514 | USE ISO_C_BINDING |
|---|
| 515 | !DEC$ ATTRIBUTES DLLEXPORT::setreg |
|---|
| 516 | real x(n),y(n),w(n),xw(n),min,range,knot(n+6) |
|---|
| 517 | integer n,nk,nx |
|---|
| 518 | real eps |
|---|
| 519 | integer ycnt,i,k |
|---|
| 520 | call scopy(n,x,1,xw,1) |
|---|
| 521 | C call sortpr(x,n,w) |
|---|
| 522 | C call sortpr(xw,n,y) |
|---|
| 523 | call ssort(x,w,n,2) |
|---|
| 524 | call ssort(xw,y,n,2) |
|---|
| 525 | range = x(n)-x(1) |
|---|
| 526 | min = x(1) |
|---|
| 527 | eps = .1e-9 |
|---|
| 528 | do 23168 i=1,n |
|---|
| 529 | x(i) = (x(i)-min)/range |
|---|
| 530 | 23168 continue |
|---|
| 531 | call scopy(n,x,1,xw,1) |
|---|
| 532 | nx = 1 |
|---|
| 533 | x(nx) = x(1) |
|---|
| 534 | w(nx) = w(1) |
|---|
| 535 | y(nx) = y(1)*w(1) |
|---|
| 536 | i=2 |
|---|
| 537 | 23170 if(.not.(i.le.n))goto 23172 |
|---|
| 538 | if(.not.(xw(i).gt.x(nx)+eps))goto 23173 |
|---|
| 539 | if(.not.(w(nx).gt.0.0))goto 23175 |
|---|
| 540 | y(nx) = y(nx)/w(nx) |
|---|
| 541 | 23175 continue |
|---|
| 542 | nx = nx + 1 |
|---|
| 543 | x(nx) = x(i) |
|---|
| 544 | y(nx) = y(i)*w(i) |
|---|
| 545 | w(nx) = w(i) |
|---|
| 546 | goto 23174 |
|---|
| 547 | 23173 continue |
|---|
| 548 | y(nx) = y(nx)+y(i)*w(i) |
|---|
| 549 | w(nx) = w(nx) + w(i) |
|---|
| 550 | 23174 continue |
|---|
| 551 | i=i+1 |
|---|
| 552 | goto 23170 |
|---|
| 553 | 23172 continue |
|---|
| 554 | if(.not.(w(nx).gt.0.0))goto 23177 |
|---|
| 555 | y(nx) = y(nx)/w(nx) |
|---|
| 556 | 23177 continue |
|---|
| 557 | i=1 |
|---|
| 558 | 23179 if(.not.(i.le.nx))goto 23181 |
|---|
| 559 | if(.not.(w(i).gt.0))goto 23182 |
|---|
| 560 | w(i)=sqrt(w(i)) |
|---|
| 561 | 23182 continue |
|---|
| 562 | i=i+1 |
|---|
| 563 | goto 23179 |
|---|
| 564 | 23181 continue |
|---|
| 565 | call sknotl(x,nx,knot,k) |
|---|
| 566 | nk = k-4 |
|---|
| 567 | return |
|---|
| 568 | end |
|---|
| 569 | end |
|---|
