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|00000050| 65 74 2e 75 75 63 70 21 | 64 72 74 0a 73 75 62 6a |et.uucp!|drt.subj|
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|00000070| 73 74 20 42 61 63 6b 70 | 72 6f 70 61 67 61 74 69 |st Backp|ropagati|
|00000080| 6f 6e 20 50 61 72 74 20 | 34 20 6f 66 20 34 0a 66 |on Part |4 of 4.f|
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|000000d0| 55 55 2e 4e 45 54 20 28 | 42 72 61 6e 64 6f 6e 20 |UU.NET (|Brandon |
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|00000100| 0a 50 6f 73 74 69 6e 67 | 2d 6e 75 6d 62 65 72 3a |.Posting|-number:|
|00000110| 20 56 6f 6c 75 6d 65 20 | 31 34 2c 20 49 73 73 75 | Volume |14, Issu|
|00000120| 65 20 38 37 0a 53 75 62 | 6d 69 74 74 65 64 2d 62 |e 87.Sub|mitted-b|
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|00000150| 2e 69 6c 2e 75 73 3e 0a | 41 72 63 68 69 76 65 2d |.il.us>.|Archive-|
|00000160| 6e 61 6d 65 3a 20 62 61 | 63 6b 2d 70 72 6f 70 2f |name: ba|ck-prop/|
|00000170| 70 61 72 74 30 34 0a 0a | 23 21 20 2f 62 69 6e 2f |part04..|#! /bin/|
|00000180| 73 68 0a 23 20 54 68 69 | 73 20 69 73 20 61 20 73 |sh.# Thi|s is a s|
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|00000200| 20 20 54 6f 20 6f 76 65 | 72 77 72 69 74 65 20 65 |  To ove|rwrite e|
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|00000220| 20 74 79 70 65 20 22 73 | 68 20 66 69 6c 65 20 2d | type "s|h file -|
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|00001b30| 2a 29 20 75 2d 3e 77 74 | 6c 69 73 74 3b 0a 58 20 |*) u->wt|list;.X |
|00001b40| 20 20 20 20 20 20 20 20 | 20 77 68 69 6c 65 20 28 |        | while (|
|00001b50| 77 20 21 3d 20 4e 55 4c | 4c 29 0a 58 20 20 20 20 |w != NUL|L).X    |
|00001b60| 20 20 20 20 20 20 20 20 | 7b 0a 58 20 20 20 20 20 |        |{.X     |
|00001b70| 20 20 20 20 20 20 20 20 | 20 62 75 6e 69 74 20 3d |        | bunit =|
|00001b80| 20 28 55 4e 49 54 20 2a | 29 20 77 2d 3e 62 61 63 | (UNIT *|) w->bac|
|00001b90| 6b 75 6e 69 74 3b 0a 58 | 20 20 20 20 20 20 20 20 |kunit;.X|        |
|00001ba0| 20 20 20 20 20 20 77 2d | 3e 74 6f 74 61 6c 20 3d |      w-|>total =|
|00001bb0| 20 77 2d 3e 74 6f 74 61 | 6c 20 2b 20 64 65 6c 74 | w->tota|l + delt|
|00001bc0| 61 6a 20 2a 20 62 75 6e | 69 74 2d 3e 6f 6a 3b 0a |aj * bun|it->oj;.|
|00001bd0| 58 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 69 |X       |       i|
|00001be0| 66 20 28 62 75 6e 69 74 | 2d 3e 6c 61 79 65 72 6e |f (bunit|->layern|
|00001bf0| 75 6d 62 65 72 20 3e 20 | 31 29 0a 58 20 20 20 20 |umber > |1).X    |
|00001c00| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 62 75 6e |        |     bun|
|00001c10| 69 74 2d 3e 65 72 72 6f | 72 20 3d 20 62 75 6e 69 |it->erro|r = buni|
|00001c20| 74 2d 3e 65 72 72 6f 72 | 20 2b 20 64 65 6c 74 61 |t->error| + delta|
|00001c30| 6a 20 2a 20 77 2d 3e 77 | 65 69 67 68 74 3b 0a 58 |j * w->w|eight;.X|
|00001c40| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 77 20 |        |      w |
|00001c50| 3d 20 77 2d 3e 6e 65 78 | 74 3b 0a 58 20 20 20 20 |= w->nex|t;.X    |
|00001c60| 20 20 20 20 20 20 20 20 | 7d 3b 0a 58 20 20 20 20 |        |};.X    |
|00001c70| 20 20 20 20 20 20 75 20 | 3d 20 75 2d 3e 6e 65 78 |      u |= u->nex|
|00001c80| 74 3b 0a 58 20 20 20 20 | 20 20 20 20 7d 3b 0a 58 |t;.X    |    };.X|
|00001c90| 20 20 20 20 20 20 6c 61 | 79 65 72 20 3d 20 6c 61 |      la|yer = la|
|00001ca0| 79 65 72 2d 3e 62 61 63 | 6b 6c 61 79 65 72 3b 0a |yer->bac|klayer;.|
|00001cb0| 58 20 20 20 20 7d 3b 0a | 58 7d 0a 58 0a 58 23 65 |X    };.|X}.X.X#e|
|00001cc0| 6e 64 69 66 0a 58 0a 58 | 76 6f 69 64 20 75 70 64 |ndif.X.X|void upd|
|00001cd0| 61 74 65 6a 28 29 20 2f | 2a 20 4a 61 63 6f 62 27 |atej() /|* Jacob'|
|00001ce0| 73 20 64 65 6c 74 61 2d | 62 61 72 2d 64 65 6c 74 |s delta-|bar-delt|
|00001cf0| 61 20 6d 65 74 68 6f 64 | 20 66 6f 72 20 77 65 69 |a method| for wei|
|00001d00| 67 68 74 20 75 70 64 61 | 74 65 73 20 2a 2f 0a 58 |ght upda|tes */.X|
|00001d10| 7b 0a 58 20 20 72 65 67 | 69 73 74 65 72 20 73 68 |{.X  reg|ister sh|
|00001d20| 6f 72 74 20 72 6b 61 70 | 70 61 3b 0a 58 20 20 72 |ort rkap|pa;.X  r|
|00001d30| 65 67 69 73 74 65 72 20 | 73 68 6f 72 74 20 74 65 |egister |short te|
|00001d40| 6d 70 32 3b 0a 58 20 20 | 72 65 67 69 73 74 65 72 |mp2;.X  |register|
|00001d50| 20 73 68 6f 72 74 20 64 | 62 61 72 6d 31 3b 0a 58 | short d|barm1;.X|
|00001d60| 20 20 72 65 67 69 73 74 | 65 72 20 73 68 6f 72 74 |  regist|er short|
|00001d70| 20 72 64 65 63 61 79 3b | 0a 58 20 20 72 65 67 69 | rdecay;|.X  regi|
|00001d80| 73 74 65 72 20 69 6e 74 | 20 74 65 6d 70 3b 0a 58 |ster int| temp;.X|
|00001d90| 20 20 72 65 67 69 73 74 | 65 72 20 55 4e 49 54 20 |  regist|er UNIT |
|00001da0| 2a 75 3b 0a 58 20 20 72 | 65 67 69 73 74 65 72 20 |*u;.X  r|egister |
|00001db0| 57 54 4e 4f 44 45 20 2a | 77 3b 0a 58 20 20 4c 41 |WTNODE *|w;.X  LA|
|00001dc0| 59 45 52 20 2a 6c 61 79 | 65 72 3b 0a 58 0a 58 2f |YER *lay|er;.X.X/|
|00001dd0| 2a 20 77 2d 3e 6f 6c 64 | 64 77 20 69 73 20 75 73 |* w->old|dw is us|
|00001de0| 65 64 20 66 6f 72 20 64 | 65 6c 74 61 2d 62 61 72 |ed for d|elta-bar|
|00001df0| 20 6d 69 6e 75 73 20 31 | 20 2a 2f 0a 58 0a 58 20 | minus 1| */.X.X |
|00001e00| 72 6b 61 70 70 61 20 3d | 20 6b 61 70 70 61 3b 0a |rkappa =| kappa;.|
|00001e10| 58 20 72 64 65 63 61 79 | 20 3d 20 64 65 63 61 79 |X rdecay| = decay|
|00001e20| 3b 0a 58 20 6c 61 79 65 | 72 20 3d 20 6c 61 73 74 |;.X laye|r = last|
|00001e30| 3b 0a 58 20 77 68 69 6c | 65 20 28 6c 61 79 65 72 |;.X whil|e (layer|
|00001e40| 2d 3e 62 61 63 6b 6c 61 | 79 65 72 20 21 3d 20 4e |->backla|yer != N|
|00001e50| 55 4c 4c 29 0a 58 20 20 | 7b 0a 58 20 20 20 75 20 |ULL).X  |{.X   u |
|00001e60| 3d 20 28 55 4e 49 54 20 | 2a 29 20 6c 61 79 65 72 |= (UNIT |*) layer|
|00001e70| 2d 3e 75 6e 69 74 73 3b | 0a 58 20 20 20 77 68 69 |->units;|.X   whi|
|00001e80| 6c 65 20 28 75 20 21 3d | 20 4e 55 4c 4c 29 0a 58 |le (u !=| NULL).X|
|00001e90| 20 20 20 20 7b 0a 58 20 | 20 20 20 20 77 20 3d 20 |    {.X |    w = |
|00001ea0| 28 57 54 4e 4f 44 45 20 | 2a 29 20 75 2d 3e 77 74 |(WTNODE |*) u->wt|
|00001eb0| 6c 69 73 74 3b 0a 58 20 | 20 20 20 20 77 68 69 6c |list;.X |    whil|
|00001ec0| 65 20 28 77 20 21 3d 20 | 4e 55 4c 4c 29 0a 58 20 |e (w != |NULL).X |
|00001ed0| 20 20 20 20 20 7b 0a 58 | 23 69 66 64 65 66 20 53 |     {.X|#ifdef S|
|00001ee0| 59 4d 4d 45 54 52 49 43 | 0a 58 20 20 20 20 20 20 |YMMETRIC|.X      |
|00001ef0| 20 69 66 20 28 28 28 55 | 4e 49 54 20 2a 29 20 77 | if (((U|NIT *) w|
|00001f00| 2d 3e 62 61 63 6b 75 6e | 69 74 29 2d 3e 75 6e 69 |->backun|it)->uni|
|00001f10| 74 6e 75 6d 62 65 72 20 | 3e 20 75 2d 3e 75 6e 69 |tnumber |> u->uni|
|00001f20| 74 6e 75 6d 62 65 72 29 | 0a 58 20 20 20 20 20 20 |tnumber)|.X      |
|00001f30| 20 20 20 20 7b 0a 58 20 | 20 20 20 20 20 20 20 20 |    {.X |        |
|00001f40| 20 20 20 69 66 20 28 2a | 28 77 2d 3e 74 6f 74 61 |   if (*|(w->tota|
|00001f50| 6c 29 20 3e 20 30 29 20 | 74 65 6d 70 32 20 3d 20 |l) > 0) |temp2 = |
|00001f60| 28 2a 28 77 2d 3e 74 6f | 74 61 6c 29 20 2b 20 35 |(*(w->to|tal) + 5|
|00001f70| 31 32 29 20 3e 3e 20 31 | 30 3b 0a 58 20 20 20 20 |12) >> 1|0;.X    |
|00001f80| 20 20 20 20 20 20 20 20 | 65 6c 73 65 20 74 65 6d |        |else tem|
|00001f90| 70 32 20 3d 20 2d 28 28 | 35 31 32 20 2d 20 2a 28 |p2 = -((|512 - *(|
|00001fa0| 77 2d 3e 74 6f 74 61 6c | 29 29 20 3e 3e 20 31 30 |w->total|)) >> 10|
|00001fb0| 29 3b 0a 58 20 20 20 20 | 20 20 20 20 20 20 20 20 |);.X    |        |
|00001fc0| 64 62 61 72 6d 31 20 3d | 20 2a 28 77 2d 3e 6f 6c |dbarm1 =| *(w->ol|
|00001fd0| 64 64 77 29 3b 0a 58 20 | 20 20 20 20 20 20 20 20 |ddw);.X |        |
|00001fe0| 20 20 20 74 65 6d 70 20 | 3d 20 74 68 65 74 61 32 |   temp |= theta2|
|00001ff0| 20 2a 20 74 65 6d 70 32 | 20 2b 20 74 68 65 74 61 | * temp2| + theta|
|00002000| 31 20 2a 20 64 62 61 72 | 6d 31 3b 0a 58 20 20 20 |1 * dbar|m1;.X   |
|00002010| 20 20 20 20 20 20 20 20 | 20 69 66 20 28 74 65 6d |        | if (tem|
|00002020| 70 20 3e 20 30 29 20 2a | 28 77 2d 3e 6f 6c 64 64 |p > 0) *|(w->oldd|
|00002030| 77 29 20 3d 20 28 74 65 | 6d 70 20 2b 20 35 31 32 |w) = (te|mp + 512|
|00002040| 29 20 3e 3e 20 31 30 3b | 0a 58 20 20 20 20 20 20 |) >> 10;|.X      |
|00002050| 20 20 20 20 20 20 65 6c | 73 65 20 2a 28 77 2d 3e |      el|se *(w->|
|00002060| 6f 6c 64 64 77 29 20 3d | 20 2d 28 28 35 31 32 20 |olddw) =| -((512 |
|00002070| 2d 20 74 65 6d 70 29 20 | 3e 3e 20 31 30 29 3b 0a |- temp) |>> 10);.|
|00002080| 58 20 20 20 20 20 20 20 | 20 20 20 20 20 69 66 20 |X       |     if |
|00002090| 28 28 74 65 6d 70 32 20 | 3e 20 30 29 20 26 26 20 |((temp2 |> 0) && |
|000020a0| 28 64 62 61 72 6d 31 20 | 3e 20 30 29 29 0a 58 20 |(dbarm1 |> 0)).X |
|000020b0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 2a 28 |        |      *(|
|000020c0| 77 2d 3e 65 74 61 29 20 | 3d 20 2a 28 77 2d 3e 65 |w->eta) |= *(w->e|
|000020d0| 74 61 29 20 2b 20 72 6b | 61 70 70 61 3b 0a 58 20 |ta) + rk|appa;.X |
|000020e0| 20 20 20 20 20 20 20 20 | 20 20 20 65 6c 73 65 20 |        |   else |
|000020f0| 69 66 20 28 28 74 65 6d | 70 32 20 3c 20 30 29 20 |if ((tem|p2 < 0) |
|00002100| 26 26 20 28 64 62 61 72 | 6d 31 20 3c 20 30 29 29 |&& (dbar|m1 < 0))|
|00002110| 0a 58 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |.X      |        |
|00002120| 20 2a 28 77 2d 3e 65 74 | 61 29 20 3d 20 2a 28 77 | *(w->et|a) = *(w|
|00002130| 2d 3e 65 74 61 29 20 2b | 20 72 6b 61 70 70 61 3b |->eta) +| rkappa;|
|00002140| 0a 58 20 20 20 20 20 20 | 20 20 20 20 20 20 65 6c |.X      |      el|
|00002150| 73 65 20 69 66 20 28 28 | 74 65 6d 70 32 20 3e 20 |se if ((|temp2 > |
|00002160| 30 29 20 26 26 20 28 64 | 62 61 72 6d 31 20 3c 20 |0) && (d|barm1 < |
|00002170| 30 29 29 0a 58 20 20 20 | 20 20 20 20 20 20 20 20 |0)).X   |        |
|00002180| 20 20 20 20 2a 28 77 2d | 3e 65 74 61 29 20 3d 20 |    *(w-|>eta) = |
|00002190| 28 2a 28 77 2d 3e 65 74 | 61 29 20 2a 20 72 64 65 |(*(w->et|a) * rde|
|000021a0| 63 61 79 29 20 3e 3e 20 | 31 30 3b 0a 58 20 20 20 |cay) >> |10;.X   |
|000021b0| 20 20 20 20 20 20 20 20 | 20 65 6c 73 65 20 69 66 |        | else if|
|000021c0| 20 28 28 74 65 6d 70 32 | 20 3c 20 30 29 20 26 26 | ((temp2| < 0) &&|
|000021d0| 20 28 64 62 61 72 6d 31 | 20 3e 20 30 29 29 0a 58 | (dbarm1| > 0)).X|
|000021e0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 2a |        |       *|
|000021f0| 28 77 2d 3e 65 74 61 29 | 20 3d 20 28 2a 28 77 2d |(w->eta)| = (*(w-|
|00002200| 3e 65 74 61 29 20 2a 20 | 72 64 65 63 61 79 29 20 |>eta) * |rdecay) |
|00002210| 3e 3e 20 31 30 3b 0a 58 | 20 20 20 20 20 20 20 20 |>> 10;.X|        |
|00002220| 20 20 20 20 69 66 20 28 | 2a 28 77 2d 3e 65 74 61 |    if (|*(w->eta|
|00002230| 29 20 3e 20 65 74 61 6d | 61 78 29 20 2a 28 77 2d |) > etam|ax) *(w-|
|00002240| 3e 65 74 61 29 20 3d 20 | 65 74 61 6d 61 78 3b 0a |>eta) = |etamax;.|
|00002250| 58 20 20 20 20 20 20 20 | 20 20 20 20 20 74 65 6d |X       |     tem|
|00002260| 70 20 3d 20 74 65 6d 70 | 32 20 2a 20 2a 28 77 2d |p = temp|2 * *(w-|
|00002270| 3e 65 74 61 29 3b 0a 58 | 20 20 20 20 20 20 20 20 |>eta);.X|        |
|00002280| 20 20 20 20 69 66 20 28 | 74 65 6d 70 20 3e 20 30 |    if (|temp > 0|
|00002290| 29 20 74 65 6d 70 32 20 | 3d 20 28 74 65 6d 70 20 |) temp2 |= (temp |
|000022a0| 2b 20 35 31 32 29 20 3e | 3e 20 31 30 3b 0a 58 20 |+ 512) >|> 10;.X |
|000022b0| 20 20 20 20 20 20 20 20 | 20 20 20 65 6c 73 65 20 |        |   else |
|000022c0| 74 65 6d 70 32 20 3d 20 | 2d 28 28 35 31 32 20 2d |temp2 = |-((512 -|
|000022d0| 20 74 65 6d 70 29 20 3e | 3e 20 31 30 29 3b 0a 58 | temp) >|> 10);.X|
|000022e0| 20 20 20 20 20 20 20 20 | 20 20 20 20 2a 28 77 2d |        |    *(w-|
|000022f0| 3e 77 65 69 67 68 74 29 | 20 3d 20 2a 28 77 2d 3e |>weight)| = *(w->|
|00002300| 77 65 69 67 68 74 29 20 | 2b 20 74 65 6d 70 32 3b |weight) |+ temp2;|
|00002310| 0a 58 20 20 20 20 20 20 | 20 20 20 20 7d 3b 0a 58 |.X      |    };.X|
|00002320| 23 65 6c 73 65 0a 58 20 | 20 20 20 20 20 20 69 66 |#else.X |      if|
|00002330| 20 28 77 2d 3e 74 6f 74 | 61 6c 20 3e 20 30 29 20 | (w->tot|al > 0) |
|00002340| 74 65 6d 70 32 20 3d 20 | 28 77 2d 3e 74 6f 74 61 |temp2 = |(w->tota|
|00002350| 6c 20 2b 20 35 31 32 29 | 20 3e 3e 20 31 30 3b 0a |l + 512)| >> 10;.|
|00002360| 58 20 20 20 20 20 20 20 | 65 6c 73 65 20 74 65 6d |X       |else tem|
|00002370| 70 32 20 3d 20 2d 28 28 | 35 31 32 20 2d 20 77 2d |p2 = -((|512 - w-|
|00002380| 3e 74 6f 74 61 6c 29 20 | 3e 3e 20 31 30 29 3b 0a |>total) |>> 10);.|
|00002390| 58 20 20 20 20 20 20 20 | 64 62 61 72 6d 31 20 3d |X       |dbarm1 =|
|000023a0| 20 77 2d 3e 6f 6c 64 64 | 77 3b 0a 58 20 20 20 20 | w->oldd|w;.X    |
|000023b0| 20 20 20 74 65 6d 70 20 | 3d 20 74 68 65 74 61 32 |   temp |= theta2|
|000023c0| 20 2a 20 74 65 6d 70 32 | 20 2b 20 74 68 65 74 61 | * temp2| + theta|
|000023d0| 31 20 2a 20 64 62 61 72 | 6d 31 3b 0a 58 20 20 20 |1 * dbar|m1;.X   |
|000023e0| 20 20 20 20 69 66 20 28 | 74 65 6d 70 20 3e 20 30 |    if (|temp > 0|
|000023f0| 29 20 77 2d 3e 6f 6c 64 | 64 77 20 3d 20 28 74 65 |) w->old|dw = (te|
|00002400| 6d 70 20 2b 20 35 31 32 | 29 20 3e 3e 20 31 30 3b |mp + 512|) >> 10;|
|00002410| 0a 58 20 20 20 20 20 20 | 20 65 6c 73 65 20 77 2d |.X      | else w-|
|00002420| 3e 6f 6c 64 64 77 20 3d | 20 2d 28 28 35 31 32 20 |>olddw =| -((512 |
|00002430| 2d 20 74 65 6d 70 29 20 | 3e 3e 20 31 30 29 3b 0a |- temp) |>> 10);.|
|00002440| 58 20 20 20 20 20 20 20 | 69 66 20 28 74 65 6d 70 |X       |if (temp|
|00002450| 32 20 3e 20 30 20 26 26 | 20 64 62 61 72 6d 31 20 |2 > 0 &&| dbarm1 |
|00002460| 3e 20 30 29 20 77 2d 3e | 65 74 61 20 3d 20 77 2d |> 0) w->|eta = w-|
|00002470| 3e 65 74 61 20 2b 20 72 | 6b 61 70 70 61 3b 0a 58 |>eta + r|kappa;.X|
|00002480| 20 20 20 20 20 20 20 65 | 6c 73 65 20 69 66 20 28 |       e|lse if (|
|00002490| 74 65 6d 70 32 20 3c 20 | 30 20 26 26 20 64 62 61 |temp2 < |0 && dba|
|000024a0| 72 6d 31 20 3c 20 30 29 | 20 77 2d 3e 65 74 61 20 |rm1 < 0)| w->eta |
|000024b0| 3d 20 77 2d 3e 65 74 61 | 20 2b 20 72 6b 61 70 70 |= w->eta| + rkapp|
|000024c0| 61 3b 0a 58 20 20 20 20 | 20 20 20 65 6c 73 65 20 |a;.X    |   else |
|000024d0| 69 66 20 28 74 65 6d 70 | 32 20 3e 20 30 20 26 26 |if (temp|2 > 0 &&|
|000024e0| 20 64 62 61 72 6d 31 20 | 3c 20 30 29 0a 58 20 20 | dbarm1 |< 0).X  |
|000024f0| 20 20 20 20 20 20 20 20 | 77 2d 3e 65 74 61 20 3d |        |w->eta =|
|00002500| 20 28 77 2d 3e 65 74 61 | 20 2a 20 72 64 65 63 61 | (w->eta| * rdeca|
|00002510| 79 29 20 3e 3e 20 31 30 | 3b 0a 58 20 20 20 20 20 |y) >> 10|;.X     |
|00002520| 20 20 65 6c 73 65 20 69 | 66 20 28 74 65 6d 70 32 |  else i|f (temp2|
|00002530| 20 3c 20 30 20 26 26 20 | 64 62 61 72 6d 31 20 3e | < 0 && |dbarm1 >|
|00002540| 20 30 29 0a 58 20 20 20 | 20 20 20 20 20 20 20 77 | 0).X   |       w|
|00002550| 2d 3e 65 74 61 20 3d 20 | 28 77 2d 3e 65 74 61 20 |->eta = |(w->eta |
|00002560| 2a 20 72 64 65 63 61 79 | 29 20 3e 3e 20 31 30 3b |* rdecay|) >> 10;|
|00002570| 0a 58 20 20 20 20 20 20 | 20 69 66 20 28 77 2d 3e |.X      | if (w->|
|00002580| 65 74 61 20 3e 20 65 74 | 61 6d 61 78 29 20 77 2d |eta > et|amax) w-|
|00002590| 3e 65 74 61 20 3d 20 65 | 74 61 6d 61 78 3b 0a 58 |>eta = e|tamax;.X|
|000025a0| 20 20 20 20 20 20 20 74 | 65 6d 70 20 3d 20 74 65 |       t|emp = te|
|000025b0| 6d 70 32 20 2a 20 77 2d | 3e 65 74 61 3b 0a 58 20 |mp2 * w-|>eta;.X |
|000025c0| 20 20 20 20 20 20 69 66 | 20 28 74 65 6d 70 20 3e |      if| (temp >|
|000025d0| 20 30 29 20 74 65 6d 70 | 32 20 3d 20 28 74 65 6d | 0) temp|2 = (tem|
|000025e0| 70 20 2b 20 35 31 32 29 | 20 3e 3e 20 31 30 3b 0a |p + 512)| >> 10;.|
|000025f0| 58 20 20 20 20 20 20 20 | 65 6c 73 65 20 74 65 6d |X       |else tem|
|00002600| 70 32 20 3d 20 2d 28 28 | 35 31 32 20 2d 20 74 65 |p2 = -((|512 - te|
|00002610| 6d 70 29 20 3e 3e 20 31 | 30 29 3b 0a 58 20 20 20 |mp) >> 1|0);.X   |
|00002620| 20 20 20 20 77 2d 3e 77 | 65 69 67 68 74 20 3d 20 |    w->w|eight = |
|00002630| 77 2d 3e 77 65 69 67 68 | 74 20 2b 20 74 65 6d 70 |w->weigh|t + temp|
|00002640| 32 3b 0a 58 23 65 6e 64 | 69 66 0a 58 20 20 20 20 |2;.X#end|if.X    |
|00002650| 20 20 20 77 20 3d 20 77 | 2d 3e 6e 65 78 74 3b 0a |   w = w|->next;.|
|00002660| 58 20 20 20 20 20 20 7d | 3b 0a 58 20 20 20 20 20 |X      }|;.X     |
|00002670| 75 20 3d 20 75 2d 3e 6e | 65 78 74 3b 0a 58 20 20 |u = u->n|ext;.X  |
|00002680| 20 20 7d 3b 0a 58 20 20 | 20 6c 61 79 65 72 20 3d |  };.X  | layer =|
|00002690| 20 6c 61 79 65 72 2d 3e | 62 61 63 6b 6c 61 79 65 | layer->|backlaye|
|000026a0| 72 3b 0a 58 20 20 7d 3b | 0a 58 7d 0a 58 0a 58 76 |r;.X  };|.X}.X.Xv|
|000026b0| 6f 69 64 20 75 70 64 61 | 74 65 6f 28 29 20 20 20 |oid upda|teo()   |
|000026c0| 20 20 20 20 20 20 20 20 | 2f 2a 20 75 70 64 61 74 |        |/* updat|
|000026d0| 65 20 77 65 69 67 68 74 | 73 20 66 6f 72 20 74 68 |e weight|s for th|
|000026e0| 65 20 6f 72 69 67 69 6e | 61 6c 20 6d 65 74 68 6f |e origin|al metho|
|000026f0| 64 20 2a 2f 0a 58 7b 20 | 20 20 20 20 20 20 20 20 |d */.X{ |        |
|00002700| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 2f |        |       /|
|00002710| 2a 20 61 6e 64 20 74 68 | 65 20 64 69 66 66 65 72 |* and th|e differ|
|00002720| 65 6e 74 69 61 6c 20 73 | 74 65 70 20 73 69 7a 65 |ential s|tep size|
|00002730| 20 61 6c 67 6f 72 69 74 | 68 6d 20 2a 2f 0a 58 20 | algorit|hm */.X |
|00002740| 20 72 65 67 69 73 74 65 | 72 20 73 68 6f 72 74 20 | registe|r short |
|00002750| 72 65 74 61 3b 0a 58 20 | 20 72 65 67 69 73 74 65 |reta;.X | registe|
|00002760| 72 20 73 68 6f 72 74 20 | 72 61 6c 70 68 61 3b 0a |r short |ralpha;.|
|00002770| 58 20 20 72 65 67 69 73 | 74 65 72 20 69 6e 74 20 |X  regis|ter int |
|00002780| 74 65 6d 70 3b 0a 58 20 | 20 72 65 67 69 73 74 65 |temp;.X | registe|
|00002790| 72 20 55 4e 49 54 20 2a | 75 3b 0a 58 20 20 72 65 |r UNIT *|u;.X  re|
|000027a0| 67 69 73 74 65 72 20 57 | 54 4e 4f 44 45 20 2a 77 |gister W|TNODE *w|
|000027b0| 3b 0a 58 20 20 4c 41 59 | 45 52 20 2a 6c 61 79 65 |;.X  LAY|ER *laye|
|000027c0| 72 3b 0a 58 0a 58 20 72 | 61 6c 70 68 61 20 3d 20 |r;.X.X r|alpha = |
|000027d0| 61 6c 70 68 61 3b 0a 58 | 20 72 65 74 61 20 3d 20 |alpha;.X| reta = |
|000027e0| 65 74 61 3b 0a 58 20 6c | 61 79 65 72 20 3d 20 6c |eta;.X l|ayer = l|
|000027f0| 61 73 74 3b 0a 58 20 77 | 68 69 6c 65 20 28 6c 61 |ast;.X w|hile (la|
|00002800| 79 65 72 2d 3e 62 61 63 | 6b 6c 61 79 65 72 20 21 |yer->bac|klayer !|
|00002810| 3d 20 4e 55 4c 4c 29 0a | 58 20 20 7b 0a 58 20 20 |= NULL).|X  {.X  |
|00002820| 20 69 66 20 28 6c 61 79 | 65 72 20 21 3d 20 6c 61 | if (lay|er != la|
|00002830| 73 74 20 26 26 20 75 70 | 64 61 74 65 20 3d 3d 20 |st && up|date == |
|00002840| 27 64 27 29 20 72 65 74 | 61 20 3d 20 65 74 61 32 |'d') ret|a = eta2|
|00002850| 3b 0a 58 20 20 20 75 20 | 3d 20 28 55 4e 49 54 20 |;.X   u |= (UNIT |
|00002860| 2a 29 20 6c 61 79 65 72 | 2d 3e 75 6e 69 74 73 3b |*) layer|->units;|
|00002870| 0a 58 20 20 20 77 68 69 | 6c 65 20 28 75 20 21 3d |.X   whi|le (u !=|
|00002880| 20 4e 55 4c 4c 29 0a 58 | 20 20 20 20 7b 0a 58 20 | NULL).X|    {.X |
|00002890| 20 20 20 20 77 20 3d 20 | 28 57 54 4e 4f 44 45 20 |    w = |(WTNODE |
|000028a0| 2a 29 20 75 2d 3e 77 74 | 6c 69 73 74 3b 0a 58 20 |*) u->wt|list;.X |
|000028b0| 20 20 20 20 77 68 69 6c | 65 20 28 77 20 21 3d 20 |    whil|e (w != |
|000028c0| 4e 55 4c 4c 29 0a 58 20 | 20 20 20 20 20 7b 0a 58 |NULL).X |     {.X|
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|00003600| 20 20 20 20 20 20 20 20 | 20 69 66 20 28 62 75 6e |        | if (bun|
|00003610| 69 74 2d 3e 6c 61 79 65 | 72 6e 75 6d 62 65 72 20 |it->laye|rnumber |
|00003620| 3e 20 31 29 0a 58 20 20 | 20 20 20 20 20 20 20 20 |> 1).X  |        |
|00003630| 20 20 20 62 75 6e 69 74 | 2d 3e 65 72 72 6f 72 20 |   bunit|->error |
|00003640| 3d 20 62 75 6e 69 74 2d | 3e 65 72 72 6f 72 20 2b |= bunit-|>error +|
|00003650| 20 64 65 6c 74 61 6a 20 | 2a 20 74 65 6d 70 33 3b | deltaj |* temp3;|
|00003660| 0a 58 23 65 6e 64 69 66 | 0a 58 20 20 20 20 20 20 |.X#endif|.X      |
|00003670| 20 20 20 20 77 20 3d 20 | 77 2d 3e 6e 65 78 74 3b |    w = |w->next;|
|00003680| 0a 58 20 20 20 20 20 20 | 20 20 7d 0a 58 20 20 20 |.X      |  }.X   |
|00003690| 20 20 20 7d 0a 58 20 20 | 20 20 20 75 20 3d 20 75 |   }.X  |   u = u|
|000036a0| 2d 3e 6e 65 78 74 3b 0a | 58 20 20 20 20 20 74 20 |->next;.|X     t |
|000036b0| 3d 20 74 2d 3e 6e 65 78 | 74 3b 0a 58 20 20 20 7d |= t->nex|t;.X   }|
|000036c0| 0a 58 20 72 65 74 75 72 | 6e 28 6e 6f 74 63 6c 6f |.X retur|n(notclo|
|000036d0| 73 65 29 3b 0a 58 7d 0a | 58 0a 58 23 69 66 6e 64 |se);.X}.|X.X#ifnd|
|000036e0| 65 66 20 53 59 4d 4d 45 | 54 52 49 43 0a 58 0a 58 |ef SYMME|TRIC.X.X|
|000036f0| 76 6f 69 64 20 63 62 61 | 63 6b 69 6e 6e 65 72 28 |void cba|ckinner(|
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|00003720| 75 74 2c 20 65 78 63 65 | 70 74 20 65 72 72 6f 72 |ut, exce|pt error|
|00003730| 73 20 61 72 65 20 2a 2f | 0a 58 7b 20 20 20 20 20 |s are */|.X{     |
|00003740| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003750| 20 20 20 20 20 20 2f 2a | 20 63 61 6c 63 75 6c 61 |      /*| calcula|
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|00003770| 2a 2f 0a 58 20 20 20 72 | 65 67 69 73 74 65 72 20 |*/.X   r|egister |
|00003780| 73 68 6f 72 74 20 64 65 | 6c 74 61 6a 3b 0a 58 20 |short de|ltaj;.X |
|00003790| 20 20 72 65 67 69 73 74 | 65 72 20 69 6e 74 20 65 |  regist|er int e|
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|000037c0| 0a 58 20 20 20 72 65 67 | 69 73 74 65 72 20 69 6e |.X   reg|ister in|
|000037d0| 74 20 74 65 6d 70 32 3b | 0a 58 20 20 20 72 65 67 |t temp2;|.X   reg|
|000037e0| 69 73 74 65 72 20 73 68 | 6f 72 74 20 74 65 6d 70 |ister sh|ort temp|
|000037f0| 33 3b 0a 58 20 20 20 72 | 65 67 69 73 74 65 72 20 |3;.X   r|egister |
|00003800| 73 68 6f 72 74 20 72 65 | 74 61 3b 0a 58 20 20 20 |short re|ta;.X   |
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|00003820| 61 6c 70 68 61 3b 0a 58 | 20 20 20 72 65 67 69 73 |alpha;.X|   regis|
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|000038b0| 3d 20 65 74 61 3b 0a 58 | 20 20 72 61 6c 70 68 61 |= eta;.X|  ralpha|
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|00003910| 58 20 20 20 20 75 20 3d | 20 28 55 4e 49 54 20 2a |X    u =| (UNIT *|
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|00003930| 58 20 20 20 20 77 68 69 | 6c 65 20 28 75 20 21 3d |X    whi|le (u !=|
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|00003960| 3e 6f 6a 3b 0a 58 20 20 | 20 20 20 20 69 66 20 28 |>oj;.X  |    if (|
|00003970| 64 65 72 69 76 20 3d 3d | 20 27 66 27 29 20 20 2f |deriv ==| 'f')  /|
|00003980| 2a 20 46 61 68 6c 6d 61 | 6e 27 73 20 64 65 72 69 |* Fahlma|n's deri|
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|000039a0| 20 20 20 20 74 65 6d 70 | 20 3d 20 28 28 28 74 65 |    temp| = (((te|
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|000039e0| 32 29 0a 58 20 20 20 20 | 20 20 20 20 20 20 20 20 |2).X    |        |
|000039f0| 20 20 20 20 20 2a 20 75 | 2d 3e 65 72 72 6f 72 3b |     * u|->error;|
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|00003a40| 20 20 20 20 20 20 74 65 | 6d 70 20 3d 20 28 28 74 |      te|mp = ((t|
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|00003a70| 20 35 31 32 29 20 3e 3e | 20 31 30 29 0a 58 20 20 | 512) >>| 10).X  |
|00003a80| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003a90| 2a 20 75 2d 3e 65 72 72 | 6f 72 3b 0a 58 20 20 20 |* u->err|or;.X   |
|00003aa0| 20 20 20 69 66 20 28 74 | 65 6d 70 20 3e 20 30 29 |   if (t|emp > 0)|
|00003ab0| 20 64 65 6c 74 61 6a 20 | 3d 20 28 74 65 6d 70 20 | deltaj |= (temp |
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|00003ad0| 0a 58 20 20 20 20 20 20 | 65 6c 73 65 20 64 65 6c |.X      |else del|
|00003ae0| 74 61 6a 20 3d 20 2d 28 | 28 35 32 34 32 38 38 20 |taj = -(|(524288 |
|00003af0| 2d 20 74 65 6d 70 29 20 | 3e 3e 20 32 30 29 3b 0a |- temp) |>> 20);.|
|00003b00| 58 20 20 20 20 20 20 65 | 74 61 64 65 6c 74 61 6a |X      e|tadeltaj|
|00003b10| 20 3d 20 72 65 74 61 20 | 2a 20 64 65 6c 74 61 6a | = reta |* deltaj|
|00003b20| 3b 0a 58 20 20 20 20 20 | 20 77 20 3d 20 28 57 54 |;.X     | w = (WT|
|00003b30| 4e 4f 44 45 20 2a 29 20 | 75 2d 3e 77 74 6c 69 73 |NODE *) |u->wtlis|
|00003b40| 74 3b 0a 58 20 20 20 20 | 20 20 77 68 69 6c 65 20 |t;.X    |  while |
|00003b50| 28 77 20 21 3d 20 4e 55 | 4c 4c 29 0a 58 20 20 20 |(w != NU|LL).X   |
|00003b60| 20 20 20 20 7b 0a 58 20 | 20 20 20 20 20 20 20 62 |    {.X |       b|
|00003b70| 75 6e 69 74 20 3d 20 28 | 55 4e 49 54 20 2a 29 20 |unit = (|UNIT *) |
|00003b80| 77 2d 3e 62 61 63 6b 75 | 6e 69 74 3b 0a 58 20 20 |w->backu|nit;.X  |
|00003b90| 20 20 20 20 20 20 74 65 | 6d 70 20 3d 20 65 74 61 |      te|mp = eta|
|00003ba0| 64 65 6c 74 61 6a 20 2a | 20 62 75 6e 69 74 2d 3e |deltaj *| bunit->|
|00003bb0| 6f 6a 3b 0a 58 20 20 20 | 20 20 20 20 20 69 66 20 |oj;.X   |     if |
|00003bc0| 28 74 65 6d 70 20 3e 20 | 30 29 20 74 65 6d 70 20 |(temp > |0) temp |
|00003bd0| 3d 20 28 74 65 6d 70 20 | 2b 20 35 32 34 32 38 38 |= (temp |+ 524288|
|00003be0| 29 20 3e 3e 20 32 30 3b | 0a 58 20 20 20 20 20 20 |) >> 20;|.X      |
|00003bf0| 20 20 65 6c 73 65 20 74 | 65 6d 70 20 3d 20 2d 28 |  else t|emp = -(|
|00003c00| 28 35 32 34 32 38 38 20 | 2d 20 74 65 6d 70 29 20 |(524288 |- temp) |
|00003c10| 3e 3e 20 32 30 29 3b 0a | 58 20 20 20 20 20 20 20 |>> 20);.|X       |
|00003c20| 20 74 65 6d 70 32 20 3d | 20 72 61 6c 70 68 61 20 | temp2 =| ralpha |
|00003c30| 2a 20 77 2d 3e 6f 6c 64 | 64 77 3b 0a 58 20 20 20 |* w->old|dw;.X   |
|00003c40| 20 20 20 20 20 69 66 20 | 28 74 65 6d 70 32 20 3e |     if |(temp2 >|
|00003c50| 20 30 29 20 74 65 6d 70 | 33 20 3d 20 74 65 6d 70 | 0) temp|3 = temp|
|00003c60| 20 2b 20 28 28 74 65 6d | 70 32 20 2b 20 35 31 32 | + ((tem|p2 + 512|
|00003c70| 29 20 3e 3e 20 31 30 29 | 3b 0a 58 20 20 20 20 20 |) >> 10)|;.X     |
|00003c80| 20 20 20 65 6c 73 65 20 | 74 65 6d 70 33 20 3d 20 |   else |temp3 = |
|00003c90| 74 65 6d 70 20 2d 20 28 | 28 35 31 32 20 2d 20 74 |temp - (|(512 - t|
|00003ca0| 65 6d 70 32 29 20 3e 3e | 20 31 30 29 3b 0a 58 20 |emp2) >>| 10);.X |
|00003cb0| 20 20 20 20 20 20 20 77 | 2d 3e 6f 6c 64 64 77 20 |       w|->olddw |
|00003cc0| 3d 20 74 65 6d 70 33 3b | 0a 58 20 20 20 20 20 20 |= temp3;|.X      |
|00003cd0| 20 20 74 65 6d 70 33 20 | 3d 20 77 2d 3e 77 65 69 |  temp3 |= w->wei|
|00003ce0| 67 68 74 20 2b 20 74 65 | 6d 70 33 3b 0a 58 20 20 |ght + te|mp3;.X  |
|00003cf0| 20 20 20 20 20 20 77 2d | 3e 77 65 69 67 68 74 20 |      w-|>weight |
|00003d00| 3d 20 74 65 6d 70 33 3b | 0a 58 20 20 20 20 20 20 |= temp3;|.X      |
|00003d10| 20 20 69 66 20 28 62 75 | 6e 69 74 2d 3e 6c 61 79 |  if (bu|nit->lay|
|00003d20| 65 72 6e 75 6d 62 65 72 | 20 3e 20 31 29 0a 58 20 |ernumber| > 1).X |
|00003d30| 20 20 20 20 20 20 20 20 | 20 20 62 75 6e 69 74 2d |        |  bunit-|
|00003d40| 3e 65 72 72 6f 72 20 3d | 20 62 75 6e 69 74 2d 3e |>error =| bunit->|
|00003d50| 65 72 72 6f 72 20 2b 20 | 64 65 6c 74 61 6a 20 2a |error + |deltaj *|
|00003d60| 20 74 65 6d 70 33 3b 0a | 58 20 20 20 20 20 20 20 | temp3;.|X       |
|00003d70| 20 77 20 3d 20 77 2d 3e | 6e 65 78 74 3b 0a 58 20 | w = w->|next;.X |
|00003d80| 20 20 20 20 20 20 7d 3b | 0a 58 20 20 20 20 20 20 |      };|.X      |
|00003d90| 75 20 3d 20 75 2d 3e 6e | 65 78 74 3b 0a 58 20 20 |u = u->n|ext;.X  |
|00003da0| 20 20 20 7d 3b 0a 58 20 | 20 20 20 6c 61 79 65 72 |   };.X |   layer|
|00003db0| 20 3d 20 6c 61 79 65 72 | 2d 3e 62 61 63 6b 6c 61 | = layer|->backla|
|00003dc0| 79 65 72 3b 0a 58 20 20 | 20 7d 3b 0a 58 7d 0a 58 |yer;.X  | };.X}.X|
|00003dd0| 0a 58 23 65 6e 64 69 66 | 0a 45 4e 44 5f 4f 46 5f |.X#endif|.END_OF_|
|00003de0| 46 49 4c 45 0a 69 66 20 | 74 65 73 74 20 31 34 32 |FILE.if |test 142|
|00003df0| 37 37 20 2d 6e 65 20 60 | 77 63 20 2d 63 20 3c 27 |77 -ne `|wc -c <'|
|00003e00| 69 6e 74 2e 63 27 60 3b | 20 74 68 65 6e 0a 20 20 |int.c'`;| then.  |
|00003e10| 20 20 65 63 68 6f 20 73 | 68 61 72 3a 20 5c 22 27 |  echo s|har: \"'|
|00003e20| 69 6e 74 2e 63 27 5c 22 | 20 75 6e 70 61 63 6b 65 |int.c'\"| unpacke|
|00003e30| 64 20 77 69 74 68 20 77 | 72 6f 6e 67 20 73 69 7a |d with w|rong siz|
|00003e40| 65 21 0a 66 69 0a 23 20 | 65 6e 64 20 6f 66 20 27 |e!.fi.# |end of '|
|00003e50| 69 6e 74 2e 63 27 0a 66 | 69 0a 69 66 20 74 65 73 |int.c'.f|i.if tes|
|00003e60| 74 20 2d 66 20 27 72 65 | 61 6c 2e 63 27 20 2d 61 |t -f 're|al.c' -a|
|00003e70| 20 22 24 7b 31 7d 22 20 | 21 3d 20 22 2d 63 22 20 | "${1}" |!= "-c" |
|00003e80| 3b 20 74 68 65 6e 20 0a | 20 20 65 63 68 6f 20 73 |; then .|  echo s|
|00003e90| 68 61 72 3a 20 57 69 6c | 6c 20 6e 6f 74 20 63 6c |har: Wil|l not cl|
|00003ea0| 6f 62 62 65 72 20 65 78 | 69 73 74 69 6e 67 20 66 |obber ex|isting f|
|00003eb0| 69 6c 65 20 5c 22 27 72 | 65 61 6c 2e 63 27 5c 22 |ile \"'r|eal.c'\"|
|00003ec0| 0a 65 6c 73 65 0a 65 63 | 68 6f 20 73 68 61 72 3a |.else.ec|ho shar:|
|00003ed0| 20 45 78 74 72 61 63 74 | 69 6e 67 20 5c 22 27 72 | Extract|ing \"'r|
|00003ee0| 65 61 6c 2e 63 27 5c 22 | 20 5c 28 31 30 34 35 34 |eal.c'\"| \(10454|
|00003ef0| 20 63 68 61 72 61 63 74 | 65 72 73 5c 29 0a 73 65 | charact|ers\).se|
|00003f00| 64 20 22 73 2f 5e 58 2f | 2f 22 20 3e 27 72 65 61 |d "s/^X/|/" >'rea|
|00003f10| 6c 2e 63 27 20 3c 3c 27 | 45 4e 44 5f 4f 46 5f 46 |l.c' <<'|END_OF_F|
|00003f20| 49 4c 45 27 0a 58 2f 2a | 20 2a 2a 2a 2a 2a 2a 2a |ILE'.X/*| *******|
|00003f30| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00003f40| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00003f50| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|00003f60| 2a 2a 2a 2a 20 2a 2f 0a | 58 2f 2a 20 66 69 6c 65 |**** */.|X/* file|
|00003f70| 20 72 65 61 6c 2e 63 3a | 20 20 63 6f 6e 74 61 69 | real.c:|  contai|
|00003f80| 6e 73 20 74 68 65 20 6e | 65 74 77 6f 72 6b 20 65 |ns the n|etwork e|
|00003f90| 76 61 6c 75 61 74 69 6f | 6e 20 61 6e 64 20 77 65 |valuatio|n and we|
|00003fa0| 69 67 68 74 20 20 20 20 | 2a 2f 0a 58 2f 2a 20 61 |ight    |*/.X/* a|
|00003fb0| 64 6a 75 73 74 6d 65 6e | 74 20 70 72 6f 63 65 64 |djustmen|t proced|
|00003fc0| 75 72 65 73 20 66 6f 72 | 20 74 68 65 20 36 34 2d |ures for| the 64-|
|00003fd0| 62 69 74 20 66 6c 6f 61 | 74 69 6e 67 20 70 6f 69 |bit floa|ting poi|
|00003fe0| 6e 74 20 70 72 6f 67 72 | 61 6d 20 2a 2f 0a 58 2f |nt progr|am */.X/|
|00003ff0| 2a 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |*       |        |
|00004000| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004010| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004020| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 2a 2f |        |      */|
|00004030| 0a 58 2f 2a 20 43 6f 70 | 79 72 69 67 68 74 20 28 |.X/* Cop|yright (|
|00004040| 63 29 20 31 39 39 30 20 | 62 79 20 44 6f 6e 61 6c |c) 1990 |by Donal|
|00004050| 64 20 52 2e 20 54 76 65 | 74 65 72 20 20 20 20 20 |d R. Tve|ter     |
|00004060| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004070| 20 2a 2f 0a 58 2f 2a 20 | 20 20 20 20 20 20 20 20 | */.X/* |        |
|00004080| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00004090| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|000040a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|000040b0| 20 20 20 20 2a 2f 0a 58 | 2f 2a 20 2a 2a 2a 2a 2a |    */.X|/* *****|
|000040c0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000040d0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000040e0| 2a 2a 2a 2a 2a 2a 2a 2a | 2a 2a 2a 2a 2a 2a 2a 2a |********|********|
|000040f0| 2a 2a 2a 2a 2a 2a 20 2a | 2f 0a 58 0a 58 23 69 6e |****** *|/.X.X#in|
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|00004110| 69 6e 63 6c 75 64 65 20 | 3c 73 74 64 69 6f 2e 68 |include |<stdio.h|
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|00004150| 61 3b 0a 58 65 78 74 65 | 72 6e 20 63 68 61 72 20 |a;.Xexte|rn char |
|00004160| 62 61 63 6b 70 72 6f 70 | 3b 0a 58 65 78 74 65 72 |backprop|;.Xexter|
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|000042e0| 20 20 20 20 2f 2a 20 63 | 6f 6d 70 75 74 65 73 20 |    /* c|omputes |
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|00005080| 20 2d 20 75 2d 3e 6f 6a | 29 29 20 2a 20 75 2d 3e | - u->oj|)) * u->|
|00005090| 65 72 72 6f 72 3b 0a 58 | 20 20 20 20 20 20 20 20 |error;.X|        |
|000050a0| 20 20 20 20 65 6c 73 65 | 20 2f 2a 20 6f 72 69 67 |    else| /* orig|
|000050b0| 69 6e 61 6c 20 61 6e 64 | 20 64 69 66 66 2e 20 73 |inal and| diff. s|
|000050c0| 74 65 70 20 73 69 7a 65 | 20 64 65 72 69 76 61 74 |tep size| derivat|
|000050d0| 69 76 65 20 2a 2f 0a 58 | 20 20 20 20 20 20 20 20 |ive */.X|        |
|000050e0| 20 20 20 20 20 20 20 64 | 65 6c 74 61 6a 20 3d 20 |       d|eltaj = |
|000050f0| 28 75 2d 3e 6f 6a 20 2a | 20 28 31 2e 30 20 2d 20 |(u->oj *| (1.0 - |
|00005100| 75 2d 3e 6f 6a 29 29 20 | 2a 20 75 2d 3e 65 72 72 |u->oj)) |* u->err|
|00005110| 6f 72 3b 0a 58 20 20 20 | 20 20 20 20 20 20 20 20 |or;.X   |        |
|00005120| 20 77 20 3d 20 28 57 54 | 4e 4f 44 45 20 2a 29 20 | w = (WT|NODE *) |
|00005130| 75 2d 3e 77 74 6c 69 73 | 74 3b 0a 58 20 20 20 20 |u->wtlis|t;.X    |
|00005140| 20 20 20 20 20 20 20 20 | 77 68 69 6c 65 20 28 77 |        |while (w|
|00005150| 20 21 3d 20 4e 55 4c 4c | 29 0a 58 20 20 20 20 20 | != NULL|).X     |
|00005160| 20 20 20 20 20 20 20 20 | 20 20 7b 0a 58 20 20 20 |        |  {.X   |
|00005170| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 62 75 |        |      bu|
|00005180| 6e 69 74 20 3d 20 28 55 | 4e 49 54 20 2a 29 20 77 |nit = (U|NIT *) w|
|00005190| 2d 3e 62 61 63 6b 75 6e | 69 74 3b 0a 58 20 20 20 |->backun|it;.X   |
|000051a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 77 2d |        |      w-|
|000051b0| 3e 74 6f 74 61 6c 20 3d | 20 77 2d 3e 74 6f 74 61 |>total =| w->tota|
|000051c0| 6c 20 2b 20 64 65 6c 74 | 61 6a 20 2a 20 62 75 6e |l + delt|aj * bun|
|000051d0| 69 74 2d 3e 6f 6a 3b 0a | 58 20 20 20 20 20 20 20 |it->oj;.|X       |
|000051e0| 20 20 20 20 20 20 20 20 | 20 20 69 66 20 28 62 75 |        |  if (bu|
|000051f0| 6e 69 74 2d 3e 6c 61 79 | 65 72 6e 75 6d 62 65 72 |nit->lay|ernumber|
|00005200| 20 3e 20 31 29 0a 58 20 | 20 20 20 20 20 20 20 20 | > 1).X |        |
|00005210| 20 20 20 20 20 20 20 20 | 20 20 20 62 75 6e 69 74 |        |   bunit|
|00005220| 2d 3e 65 72 72 6f 72 20 | 3d 20 62 75 6e 69 74 2d |->error |= bunit-|
|00005230| 3e 65 72 72 6f 72 20 2b | 20 64 65 6c 74 61 6a 20 |>error +| deltaj |
|00005240| 2a 20 77 2d 3e 77 65 69 | 67 68 74 3b 0a 58 20 20 |* w->wei|ght;.X  |
|00005250| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 77 |        |       w|
|00005260| 20 3d 20 77 2d 3e 6e 65 | 78 74 3b 0a 58 20 20 20 | = w->ne|xt;.X   |
|00005270| 20 20 20 20 20 20 20 20 | 20 20 20 20 7d 3b 0a 58 |        |    };.X|
|00005280| 20 20 20 20 20 20 20 20 | 20 20 20 20 75 20 3d 20 |        |    u = |
|00005290| 75 2d 3e 6e 65 78 74 3b | 0a 58 20 20 20 20 20 20 |u->next;|.X      |
|000052a0| 20 20 20 20 7d 3b 0a 58 | 20 20 20 20 20 20 20 6c |    };.X|       l|
|000052b0| 61 79 65 72 20 3d 20 6c | 61 79 65 72 2d 3e 62 61 |ayer = l|ayer->ba|
|000052c0| 63 6b 6c 61 79 65 72 3b | 0a 58 20 20 20 20 20 7d |cklayer;|.X     }|
|000052d0| 3b 0a 58 7d 0a 58 0a 58 | 23 65 6e 64 69 66 0a 58 |;.X}.X.X|#endif.X|
|000052e0| 0a 58 76 6f 69 64 20 75 | 70 64 61 74 65 6a 28 29 |.Xvoid u|pdatej()|
|000052f0| 20 2f 2a 20 4a 61 63 6f | 62 27 73 20 64 65 6c 74 | /* Jaco|b's delt|
|00005300| 61 2d 62 61 72 2d 64 65 | 6c 74 61 20 6d 65 74 68 |a-bar-de|lta meth|
|00005310| 6f 64 20 66 6f 72 20 63 | 68 61 6e 67 69 6e 67 20 |od for c|hanging |
|00005320| 77 65 69 67 68 74 73 20 | 2a 2f 0a 58 7b 0a 58 20 |weights |*/.X{.X |
|00005330| 20 72 65 67 69 73 74 65 | 72 20 73 68 6f 72 74 20 | registe|r short |
|00005340| 73 74 6f 74 61 6c 3b 0a | 58 20 20 72 65 67 69 73 |stotal;.|X  regis|
|00005350| 74 65 72 20 73 68 6f 72 | 74 20 73 64 62 61 72 6d |ter shor|t sdbarm|
|00005360| 31 3b 0a 58 20 20 72 65 | 67 69 73 74 65 72 20 55 |1;.X  re|gister U|
|00005370| 4e 49 54 20 2a 75 3b 0a | 58 20 20 72 65 67 69 73 |NIT *u;.|X  regis|
|00005380| 74 65 72 20 57 54 4e 4f | 44 45 20 2a 77 3b 0a 58 |ter WTNO|DE *w;.X|
|00005390| 20 20 4c 41 59 45 52 20 | 2a 6c 61 79 65 72 3b 0a |  LAYER |*layer;.|
|000053a0| 58 0a 58 20 20 2f 2a 20 | 77 2d 3e 6f 6c 64 64 77 |X.X  /* |w->olddw|
|000053b0| 20 69 73 20 75 73 65 64 | 20 66 6f 72 20 64 65 6c | is used| for del|
|000053c0| 74 61 2d 62 61 72 20 6d | 69 6e 75 73 20 31 20 2a |ta-bar m|inus 1 *|
|000053d0| 2f 0a 58 0a 58 20 6c 61 | 79 65 72 20 3d 20 6c 61 |/.X.X la|yer = la|
|000053e0| 73 74 3b 0a 58 20 77 68 | 69 6c 65 20 28 6c 61 79 |st;.X wh|ile (lay|
|000053f0| 65 72 2d 3e 62 61 63 6b | 6c 61 79 65 72 20 21 3d |er->back|layer !=|
|00005400| 20 4e 55 4c 4c 29 0a 58 | 20 20 7b 0a 58 20 20 20 | NULL).X|  {.X   |
|00005410| 75 20 3d 20 28 55 4e 49 | 54 20 2a 29 20 6c 61 79 |u = (UNI|T *) lay|
|00005420| 65 72 2d 3e 75 6e 69 74 | 73 3b 0a 58 20 20 20 77 |er->unit|s;.X   w|
|00005430| 68 69 6c 65 20 28 75 20 | 21 3d 20 4e 55 4c 4c 29 |hile (u |!= NULL)|
|00005440| 0a 58 20 20 20 20 7b 0a | 58 20 20 20 20 20 77 20 |.X    {.|X     w |
|00005450| 3d 20 28 57 54 4e 4f 44 | 45 20 2a 29 20 75 2d 3e |= (WTNOD|E *) u->|
|00005460| 77 74 6c 69 73 74 3b 0a | 58 20 20 20 20 20 77 68 |wtlist;.|X     wh|
|00005470| 69 6c 65 20 28 77 20 21 | 3d 20 4e 55 4c 4c 29 0a |ile (w !|= NULL).|
|00005480| 58 20 20 20 20 20 20 7b | 0a 58 23 69 66 64 65 66 |X      {|.X#ifdef|
|00005490| 20 53 59 4d 4d 45 54 52 | 49 43 0a 58 20 20 20 20 | SYMMETR|IC.X    |
|000054a0| 20 20 20 69 66 20 28 28 | 28 55 4e 49 54 20 2a 29 |   if ((|(UNIT *)|
|000054b0| 20 77 2d 3e 62 61 63 6b | 75 6e 69 74 29 2d 3e 75 | w->back|unit)->u|
|000054c0| 6e 69 74 6e 75 6d 62 65 | 72 20 3e 20 75 2d 3e 75 |nitnumbe|r > u->u|
|000054d0| 6e 69 74 6e 75 6d 62 65 | 72 29 0a 58 20 20 20 20 |nitnumbe|r).X    |
|000054e0| 20 20 20 20 20 20 7b 0a | 58 20 20 20 20 20 20 20 |      {.|X       |
|000054f0| 20 20 20 20 20 69 66 20 | 28 2a 28 77 2d 3e 74 6f |     if |(*(w->to|
|00005500| 74 61 6c 29 20 3e 20 30 | 29 20 73 74 6f 74 61 6c |tal) > 0|) stotal|
|00005510| 20 3d 20 31 3b 0a 58 20 | 20 20 20 20 20 20 20 20 | = 1;.X |        |
|00005520| 20 20 20 20 20 20 65 6c | 73 65 20 69 66 20 28 2a |      el|se if (*|
|00005530| 28 77 2d 3e 74 6f 74 61 | 6c 29 20 3c 20 30 29 20 |(w->tota|l) < 0) |
|00005540| 73 74 6f 74 61 6c 20 3d | 20 2d 31 3b 0a 58 20 20 |stotal =| -1;.X  |
|00005550| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 65 6c 73 |        |     els|
|00005560| 65 20 73 74 6f 74 61 6c | 20 3d 20 30 3b 0a 58 20 |e stotal| = 0;.X |
|00005570| 20 20 20 20 20 20 20 20 | 20 20 20 69 66 20 28 2a |        |   if (*|
|00005580| 28 77 2d 3e 6f 6c 64 64 | 77 29 20 3e 20 30 29 20 |(w->oldd|w) > 0) |
|00005590| 73 64 62 61 72 6d 31 20 | 3d 20 31 3b 0a 58 20 20 |sdbarm1 |= 1;.X  |
|000055a0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 65 6c 73 |        |     els|
|000055b0| 65 20 69 66 20 28 2a 28 | 77 2d 3e 6f 6c 64 64 77 |e if (*(|w->olddw|
|000055c0| 29 20 3c 20 30 29 20 73 | 64 62 61 72 6d 31 20 3d |) < 0) s|dbarm1 =|
|000055d0| 20 2d 31 3b 0a 58 20 20 | 20 20 20 20 20 20 20 20 | -1;.X  |        |
|000055e0| 20 20 20 20 20 65 6c 73 | 65 20 73 64 62 61 72 6d |     els|e sdbarm|
|000055f0| 31 20 3d 20 30 3b 0a 58 | 20 20 20 20 20 20 20 20 |1 = 0;.X|        |
|00005600| 20 20 20 20 2a 28 77 2d | 3e 6f 6c 64 64 77 29 20 |    *(w-|>olddw) |
|00005610| 3d 20 74 68 65 74 61 32 | 20 2a 20 2a 28 77 2d 3e |= theta2| * *(w->|
|00005620| 74 6f 74 61 6c 29 20 2b | 20 74 68 65 74 61 31 20 |total) +| theta1 |
|00005630| 2a 20 2a 28 77 2d 3e 6f | 6c 64 64 77 29 3b 0a 58 |* *(w->o|lddw);.X|
|00005640| 20 20 20 20 20 20 20 20 | 20 20 20 20 69 66 20 28 |        |    if (|
|00005650| 28 73 74 6f 74 61 6c 20 | 3e 20 30 29 20 26 26 20 |(stotal |> 0) && |
|00005660| 28 73 64 62 61 72 6d 31 | 20 3e 20 30 29 29 0a 58 |(sdbarm1| > 0)).X|
|00005670| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 2a |        |       *|
|00005680| 28 77 2d 3e 65 74 61 29 | 20 3d 20 2a 28 77 2d 3e |(w->eta)| = *(w->|
|00005690| 65 74 61 29 20 2b 20 6b | 61 70 70 61 3b 0a 58 20 |eta) + k|appa;.X |
|000056a0| 20 20 20 20 20 20 20 20 | 20 20 20 65 6c 73 65 20 |        |   else |
|000056b0| 69 66 20 28 28 73 74 6f | 74 61 6c 20 3c 20 30 29 |if ((sto|tal < 0)|
|000056c0| 20 26 26 20 28 73 64 62 | 61 72 6d 31 20 3c 20 30 | && (sdb|arm1 < 0|
|000056d0| 29 29 0a 58 20 20 20 20 | 20 20 20 20 20 20 20 20 |)).X    |        |
|000056e0| 20 20 20 2a 28 77 2d 3e | 65 74 61 29 20 3d 20 2a |   *(w->|eta) = *|
|000056f0| 28 77 2d 3e 65 74 61 29 | 20 2b 20 6b 61 70 70 61 |(w->eta)| + kappa|
|00005700| 3b 0a 58 20 20 20 20 20 | 20 20 20 20 20 20 20 65 |;.X     |       e|
|00005710| 6c 73 65 20 69 66 20 28 | 28 73 74 6f 74 61 6c 20 |lse if (|(stotal |
|00005720| 3e 20 30 29 20 26 26 20 | 28 73 64 62 61 72 6d 31 |> 0) && |(sdbarm1|
|00005730| 20 3c 20 30 29 29 0a 58 | 20 20 20 20 20 20 20 20 | < 0)).X|        |
|00005740| 20 20 20 20 20 20 20 2a | 28 77 2d 3e 65 74 61 29 |       *|(w->eta)|
|00005750| 20 3d 20 2a 28 77 2d 3e | 65 74 61 29 20 2a 20 64 | = *(w->|eta) * d|
|00005760| 65 63 61 79 3b 0a 58 20 | 20 20 20 20 20 20 20 20 |ecay;.X |        |
|00005770| 20 20 20 65 6c 73 65 20 | 69 66 20 28 28 73 74 6f |   else |if ((sto|
|00005780| 74 61 6c 20 3c 20 30 29 | 20 26 26 20 28 73 64 62 |tal < 0)| && (sdb|
|00005790| 61 72 6d 31 20 3e 20 30 | 29 29 0a 58 20 20 20 20 |arm1 > 0|)).X    |
|000057a0| 20 20 20 20 20 20 20 20 | 20 20 20 2a 28 77 2d 3e |        |   *(w->|
|000057b0| 65 74 61 29 20 3d 20 2a | 28 77 2d 3e 65 74 61 29 |eta) = *|(w->eta)|
|000057c0| 20 2a 20 64 65 63 61 79 | 3b 0a 58 20 20 20 20 20 | * decay|;.X     |
|000057d0| 20 20 20 20 20 20 20 69 | 66 20 28 2a 28 77 2d 3e |       i|f (*(w->|
|000057e0| 65 74 61 29 20 3e 20 65 | 74 61 6d 61 78 29 20 2a |eta) > e|tamax) *|
|000057f0| 28 77 2d 3e 65 74 61 29 | 20 3d 20 65 74 61 6d 61 |(w->eta)| = etama|
|00005800| 78 3b 0a 58 20 20 20 20 | 20 20 20 20 20 20 20 20 |x;.X    |        |
|00005810| 2a 28 77 2d 3e 77 65 69 | 67 68 74 29 20 3d 20 2a |*(w->wei|ght) = *|
|00005820| 28 77 2d 3e 77 65 69 67 | 68 74 29 20 2b 20 2a 28 |(w->weig|ht) + *(|
|00005830| 77 2d 3e 74 6f 74 61 6c | 29 20 2a 20 2a 28 77 2d |w->total|) * *(w-|
|00005840| 3e 65 74 61 29 3b 0a 58 | 20 20 20 20 20 20 20 20 |>eta);.X|        |
|00005850| 20 20 7d 3b 0a 58 23 65 | 6c 73 65 0a 58 20 20 20 |  };.X#e|lse.X   |
|00005860| 20 20 20 20 69 66 20 28 | 77 2d 3e 74 6f 74 61 6c |    if (|w->total|
|00005870| 20 3e 20 30 29 20 73 74 | 6f 74 61 6c 20 3d 20 31 | > 0) st|otal = 1|
|00005880| 3b 0a 58 20 20 20 20 20 | 20 20 20 20 20 65 6c 73 |;.X     |     els|
|00005890| 65 20 69 66 20 28 77 2d | 3e 74 6f 74 61 6c 20 3c |e if (w-|>total <|
|000058a0| 20 30 29 20 73 74 6f 74 | 61 6c 20 3d 20 2d 31 3b | 0) stot|al = -1;|
|000058b0| 0a 58 20 20 20 20 20 20 | 20 20 20 20 65 6c 73 65 |.X      |    else|
|000058c0| 20 73 74 6f 74 61 6c 20 | 3d 20 30 3b 0a 58 20 20 | stotal |= 0;.X  |
|000058d0| 20 20 20 20 20 69 66 20 | 28 77 2d 3e 6f 6c 64 64 |     if |(w->oldd|
|000058e0| 77 20 3e 20 30 29 20 73 | 64 62 61 72 6d 31 20 3d |w > 0) s|dbarm1 =|
|000058f0| 20 31 3b 0a 58 20 20 20 | 20 20 20 20 20 20 20 65 | 1;.X   |       e|
|00005900| 6c 73 65 20 69 66 20 28 | 77 2d 3e 6f 6c 64 64 77 |lse if (|w->olddw|
|00005910| 20 3c 20 30 29 20 73 64 | 62 61 72 6d 31 20 3d 20 | < 0) sd|barm1 = |
|00005920| 2d 31 3b 0a 58 20 20 20 | 20 20 20 20 20 20 20 65 |-1;.X   |       e|
|00005930| 6c 73 65 20 73 64 62 61 | 72 6d 31 20 3d 20 30 3b |lse sdba|rm1 = 0;|
|00005940| 0a 58 20 20 20 20 20 20 | 20 77 2d 3e 6f 6c 64 64 |.X      | w->oldd|
|00005950| 77 20 3d 20 74 68 65 74 | 61 32 20 2a 20 77 2d 3e |w = thet|a2 * w->|
|00005960| 74 6f 74 61 6c 20 2b 20 | 74 68 65 74 61 31 20 2a |total + |theta1 *|
|00005970| 20 77 2d 3e 6f 6c 64 64 | 77 3b 0a 58 20 20 20 20 | w->oldd|w;.X    |
|00005980| 20 20 20 69 66 20 28 28 | 73 74 6f 74 61 6c 20 3e |   if ((|stotal >|
|00005990| 20 30 29 20 26 26 20 28 | 73 64 62 61 72 6d 31 20 | 0) && (|sdbarm1 |
|000059a0| 3e 20 30 29 29 20 77 2d | 3e 65 74 61 20 3d 20 77 |> 0)) w-|>eta = w|
|000059b0| 2d 3e 65 74 61 20 2b 20 | 6b 61 70 70 61 3b 0a 58 |->eta + |kappa;.X|
|000059c0| 20 20 20 20 20 20 20 65 | 6c 73 65 20 69 66 20 28 |       e|lse if (|
|000059d0| 28 73 74 6f 74 61 6c 20 | 3c 20 30 29 20 26 26 20 |(stotal |< 0) && |
|000059e0| 28 73 64 62 61 72 6d 31 | 20 3c 20 30 29 29 20 77 |(sdbarm1| < 0)) w|
|000059f0| 2d 3e 65 74 61 20 3d 20 | 77 2d 3e 65 74 61 20 2b |->eta = |w->eta +|
|00005a00| 20 6b 61 70 70 61 3b 0a | 58 20 20 20 20 20 20 20 | kappa;.|X       |
|00005a10| 65 6c 73 65 20 69 66 20 | 28 28 73 74 6f 74 61 6c |else if |((stotal|
|00005a20| 20 3e 20 30 29 20 26 26 | 20 28 73 64 62 61 72 6d | > 0) &&| (sdbarm|
|00005a30| 31 20 3c 20 30 29 29 20 | 77 2d 3e 65 74 61 20 3d |1 < 0)) |w->eta =|
|00005a40| 20 77 2d 3e 65 74 61 20 | 2a 20 64 65 63 61 79 3b | w->eta |* decay;|
|00005a50| 0a 58 20 20 20 20 20 20 | 20 65 6c 73 65 20 69 66 |.X      | else if|
|00005a60| 20 28 28 73 74 6f 74 61 | 6c 20 3c 20 30 29 20 26 | ((stota|l < 0) &|
|00005a70| 26 20 28 73 64 62 61 72 | 6d 31 20 3e 20 30 29 29 |& (sdbar|m1 > 0))|
|00005a80| 20 77 2d 3e 65 74 61 20 | 3d 20 77 2d 3e 65 74 61 | w->eta |= w->eta|
|00005a90| 20 2a 20 64 65 63 61 79 | 3b 0a 58 20 20 20 20 20 | * decay|;.X     |
|00005aa0| 20 20 69 66 20 28 77 2d | 3e 65 74 61 20 3e 20 65 |  if (w-|>eta > e|
|00005ab0| 74 61 6d 61 78 29 20 77 | 2d 3e 65 74 61 20 3d 20 |tamax) w|->eta = |
|00005ac0| 65 74 61 6d 61 78 3b 0a | 58 20 20 20 20 20 20 20 |etamax;.|X       |
|00005ad0| 77 2d 3e 77 65 69 67 68 | 74 20 3d 20 77 2d 3e 77 |w->weigh|t = w->w|
|00005ae0| 65 69 67 68 74 20 2b 20 | 77 2d 3e 74 6f 74 61 6c |eight + |w->total|
|00005af0| 20 2a 20 77 2d 3e 65 74 | 61 3b 0a 58 23 65 6e 64 | * w->et|a;.X#end|
|00005b00| 69 66 0a 58 20 20 20 20 | 20 20 20 77 20 3d 20 77 |if.X    |   w = w|
|00005b10| 2d 3e 6e 65 78 74 3b 0a | 58 20 20 20 20 20 20 7d |->next;.|X      }|
|00005b20| 3b 0a 58 20 20 20 20 20 | 75 20 3d 20 75 2d 3e 6e |;.X     |u = u->n|
|00005b30| 65 78 74 3b 0a 58 20 20 | 20 20 7d 3b 0a 58 20 20 |ext;.X  |  };.X  |
|00005b40| 20 6c 61 79 65 72 20 3d | 20 6c 61 79 65 72 2d 3e | layer =| layer->|
|00005b50| 62 61 63 6b 6c 61 79 65 | 72 3b 0a 58 20 20 7d 3b |backlaye|r;.X  };|
|00005b60| 0a 58 7d 0a 58 0a 58 76 | 6f 69 64 20 75 70 64 61 |.X}.X.Xv|oid upda|
|00005b70| 74 65 6f 28 29 20 20 20 | 20 20 20 20 20 2f 2a 20 |teo()   |     /* |
|00005b80| 75 70 64 61 74 65 20 77 | 65 69 67 68 74 73 20 66 |update w|eights f|
|00005b90| 6f 72 20 74 68 65 20 6f | 72 69 67 69 6e 61 6c 20 |or the o|riginal |
|00005ba0| 61 6e 64 20 74 68 65 20 | 2a 2f 0a 58 7b 20 20 20 |and the |*/.X{   |
|00005bb0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00005bc0| 20 20 2f 2a 20 64 69 66 | 66 65 72 65 6e 74 69 61 |  /* dif|ferentia|
|00005bd0| 6c 20 73 74 65 70 20 73 | 69 7a 65 20 6d 65 74 68 |l step s|ize meth|
|00005be0| 6f 64 73 20 2a 2f 0a 58 | 20 20 64 6f 75 62 6c 65 |ods */.X|  double|
|00005bf0| 20 72 65 74 61 3b 0a 58 | 20 20 72 65 67 69 73 74 | reta;.X|  regist|
|00005c00| 65 72 20 55 4e 49 54 20 | 2a 75 3b 0a 58 20 20 72 |er UNIT |*u;.X  r|
|00005c10| 65 67 69 73 74 65 72 20 | 57 54 4e 4f 44 45 20 2a |egister |WTNODE *|
|00005c20| 77 3b 0a 58 20 20 4c 41 | 59 45 52 20 2a 6c 61 79 |w;.X  LA|YER *lay|
|00005c30| 65 72 3b 0a 58 0a 58 20 | 72 65 74 61 20 3d 20 65 |er;.X.X |reta = e|
|00005c40| 74 61 3b 0a 58 20 6c 61 | 79 65 72 20 3d 20 6c 61 |ta;.X la|yer = la|
|00005c50| 73 74 3b 0a 58 20 77 68 | 69 6c 65 20 28 6c 61 79 |st;.X wh|ile (lay|
|00005c60| 65 72 2d 3e 62 61 63 6b | 6c 61 79 65 72 20 21 3d |er->back|layer !=|
|00005c70| 20 4e 55 4c 4c 29 0a 58 | 20 20 7b 0a 58 20 20 20 | NULL).X|  {.X   |
|00005c80| 69 66 20 28 6c 61 79 65 | 72 20 21 3d 20 6c 61 73 |if (laye|r != las|
|00005c90| 74 20 26 26 20 75 70 64 | 61 74 65 20 3d 3d 20 27 |t && upd|ate == '|
|00005ca0| 64 27 29 20 72 65 74 61 | 20 3d 20 65 74 61 32 3b |d') reta| = eta2;|
|00005cb0| 0a 58 20 20 20 75 20 3d | 20 28 55 4e 49 54 20 2a |.X   u =| (UNIT *|
|00005cc0| 29 20 6c 61 79 65 72 2d | 3e 75 6e 69 74 73 3b 0a |) layer-|>units;.|
|00005cd0| 58 20 20 20 77 68 69 6c | 65 20 28 75 20 21 3d 20 |X   whil|e (u != |
|00005ce0| 4e 55 4c 4c 29 0a 58 20 | 20 20 20 7b 0a 58 20 20 |NULL).X |   {.X  |
|00005cf0| 20 20 20 77 20 3d 20 28 | 57 54 4e 4f 44 45 20 2a |   w = (|WTNODE *|
|00005d00| 29 20 75 2d 3e 77 74 6c | 69 73 74 3b 0a 58 20 20 |) u->wtl|ist;.X  |
|00005d10| 20 20 20 77 68 69 6c 65 | 20 28 77 20 21 3d 20 4e |   while| (w != N|
|00005d20| 55 4c 4c 29 0a 58 20 20 | 20 20 20 20 7b 0a 58 23 |ULL).X  |    {.X#|
|00005d30| 69 66 64 65 66 20 53 59 | 4d 4d 45 54 52 49 43 0a |ifdef SY|MMETRIC.|
|00005d40| 58 20 20 20 20 20 20 20 | 69 66 20 28 28 28 55 4e |X       |if (((UN|
|00005d50| 49 54 20 2a 29 20 77 2d | 3e 62 61 63 6b 75 6e 69 |IT *) w-|>backuni|
|00005d60| 74 29 2d 3e 75 6e 69 74 | 6e 75 6d 62 65 72 20 3e |t)->unit|number >|
|00005d70| 20 75 2d 3e 75 6e 69 74 | 6e 75 6d 62 65 72 29 0a | u->unit|number).|
|00005d80| 58 20 20 20 20 20 20 20 | 20 20 20 7b 0a 58 20 20 |X       |   {.X  |
|00005d90| 20 20 20 20 20 20 20 20 | 20 20 2a 28 77 2d 3e 6f |        |  *(w->o|
|00005da0| 6c 64 64 77 29 20 3d 20 | 2a 28 77 2d 3e 74 6f 74 |lddw) = |*(w->tot|
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+--------+-------------------------+-------------------------+--------+--------+