restore *.orig.c to each entry

Under each yyyy/dir there is a file of the form '*.orig.c'
containing the original source code, or as close as we can
get to the original source code.

1990/theorem/theorem.orig.c

@@ -0,0 +1,93 @@
+#include <stdio.h>
+#include <math.h>
+#define X
+#define Y {}
+#define C  }
+#define o {
+#undef main
+char m[500][99],v[99],R;
+int*a,b,n,i,j,W,A;
+float Q,G,D,M,T,B,O,U,V,N,y,e();
+P(g,R,u)float*g,R,u;{int c;for(*g=1,c=u;c--;*g*=R);}
+X
+K(g,R,u)float*g,u;char R;
+o
+if(R=='+')*g+=u;
+if(R=='-')*g-=u;
+if(R=='*')*g*=u;
+if(R=='/')*g/=u;
+if(R=='^')P(g,*g,u);
+C
+w(g,R,u)float*g,u;char R;
+/**/{int b,f;A=atoi(*++a);b=atoi(*++a);while((f=A+b)<15000){printf("%d\n",f);A=b;b=f;}}
+main(A,a)int A;char*a[];
+o o
+if(!strcmp(*++a,"-r"))S();
+D=atof(*++a);
+T=atof(*++a);
+B=atof(*++a);
+M=atof(*(4+(a-=3)));
+C
+while(D<T)
+o
+U=e((G=B/2,*a),D,M,a);
+V=e(*a,Q=D+G,M+G*U,a);
+/*/
+z;/*/
+N=2*e(*a,Q,M+G*V,a);
+M+=B*V/3+B*N/6+B*e(*a,D+=B,M+G*N,a)/6+G*U/3;
+printf("%f %f\n",D,M);
+C
+while(T=0)
+;
+W=D=1;
+;
+while(W!=1)
+o o
+strcpy(j+m,v);
+o 
+if((j-=W)<=W)break;
+strcpy(j+m,m+j-W);
+C
+while(strcmp(m+j-W,v)>0)
+j=i;
+strcpy(v,i+m);
+C
+for(i=(W/=3)-1;++i<n;)
+;
+C
+do
+;
+while(0);
+for(W=1;(W=W*3+1)<n;);
+C
+float e(f,D,M,a)char*f,*a[];float D,M;
+o
+#define main L
+O=0;
+R='+';
+for(;*f;f++)
+if(*f=='y')K(&O,R,M);
+else if((*f>='0')&&(*f<='9'))K(&O,R,(float)*f-'0');
+else if(*f=='x')K(&O,R,D);
+else if(1)R=*f;
+if(1);
+return O;
+for(j=0;j<n;puts(j++[m]));
+e("",O,&O,a);
+n=j-(O=1);
+while(gets(j++[m]));
+if(!strcmp(*++a,"-r"))S();
+C
+/**/main(A,a)int A;char*a[];
+Y
+S(){while(gets(b++[m]));for(b--;b--;puts(b[m]));}
+char*f,m[500][99],R,v[99];
+int b,W,n,i,j,z;
+float Q,G,D,M,T,O,B,U,V,N,e();
+#define Y
+#define X {}
+#define o }
+#define C {
+#include <stdio.h>
+#include <math.h>