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#include "copyright.h" |
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#include <stdio.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include "rterror.h" |
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#include "rtio.h" |
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#include "rtmisc.h" |
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#include "calcomp.h" |
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#ifndef NHASH |
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#define newnode() (EPNODE *)ecalloc(1, sizeof(EPNODE)) |
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static double dvalue(); |
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static double dvalue(char *name, EPNODE *d); |
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#define MAXCLOCK (1L<<31) /* clock wrap value */ |
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void |
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fcompile(fname) /* get definitions from a file */ |
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char *fname; |
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fcompile( /* get definitions from a file */ |
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char *fname |
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) |
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{ |
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FILE *fp; |
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void |
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scompile(str, fn, ln) /* get definitions from a string */ |
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char *str; |
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char *fn; |
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int ln; |
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scompile( /* get definitions from a string */ |
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char *str, |
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char *fn, |
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int ln |
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) |
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{ |
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initstr(str, fn, ln); |
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while (nextc != EOF) |
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double |
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varvalue(vname) /* return a variable's value */ |
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char *vname; |
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varvalue( /* return a variable's value */ |
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char *vname |
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) |
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{ |
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return(dvalue(vname, dlookup(vname))); |
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} |
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double |
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evariable(ep) /* evaluate a variable */ |
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EPNODE *ep; |
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evariable( /* evaluate a variable */ |
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EPNODE *ep |
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) |
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{ |
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register VARDEF *dp = ep->v.ln; |
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void |
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varset(vname, assign, val) /* set a variable's value */ |
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char *vname; |
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int assign; |
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double val; |
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varset( /* set a variable's value */ |
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char *vname, |
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int assign, |
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double val |
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) |
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{ |
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char *qname; |
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register EPNODE *ep1, *ep2; |
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void |
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dclear(name) /* delete variable definitions of name */ |
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char *name; |
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dclear( /* delete variable definitions of name */ |
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char *name |
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) |
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{ |
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register EPNODE *ep; |
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void |
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dremove(name) /* delete all definitions of name */ |
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char *name; |
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dremove( /* delete all definitions of name */ |
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char *name |
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) |
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{ |
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register EPNODE *ep; |
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int |
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vardefined(name) /* return non-zero if variable defined */ |
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char *name; |
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vardefined( /* return non-zero if variable defined */ |
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char *name |
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) |
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{ |
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register EPNODE *dp; |
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char * |
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setcontext(ctx) /* set a new context path */ |
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register char *ctx; |
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setcontext( /* set a new context path */ |
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register char *ctx |
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) |
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{ |
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register char *cpp; |
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char * |
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pushcontext(ctx) /* push on another context */ |
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char *ctx; |
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pushcontext( /* push on another context */ |
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char *ctx |
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) |
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{ |
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extern char *strncpy(), *strcpy(); |
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char oldcontext[MAXCNTX+1]; |
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register int n; |
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char * |
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popcontext() /* pop off top context */ |
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popcontext(void) /* pop off top context */ |
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{ |
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register char *cp1, *cp2; |
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while (*++cp2 && *cp2 != CNTXMARK) |
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; |
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cp1 = context; /* copy tail to front */ |
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while (*cp1++ = *cp2++) |
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while ( (*cp1++ = *cp2++) ) |
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; |
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return(context); |
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} |
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char * |
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qualname(nam, lvl) /* get qualified name */ |
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register char *nam; |
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int lvl; |
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qualname( /* get qualified name */ |
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register char *nam, |
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int lvl |
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) |
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{ |
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static char nambuf[MAXWORD+1]; |
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static char nambuf[RMAXWORD+1]; |
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register char *cp = nambuf, *cpp; |
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/* check for explicit local */ |
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if (*nam == CNTXMARK) |
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return(lvl > 0 ? NULL : nam); |
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/* copy name to static buffer */ |
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while (*nam) { |
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if (cp >= nambuf+MAXWORD) |
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if (cp >= nambuf+RMAXWORD) |
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goto toolong; |
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*cp++ = *nam++; |
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} |
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; |
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} |
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while (*cpp) { /* copy context to static buffer */ |
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if (cp >= nambuf+MAXWORD) |
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if (cp >= nambuf+RMAXWORD) |
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goto toolong; |
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*cp++ = *cpp++; |
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} |
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int |
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incontext(qn) /* is qualified name in current context? */ |
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register char *qn; |
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incontext( /* is qualified name in current context? */ |
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register char *qn |
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) |
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{ |
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if (!context[0]) /* global context accepts all */ |
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return(1); |
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void |
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chanout(cs) /* set output channels */ |
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int (*cs)(); |
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chanout( /* set output channels */ |
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void (*cs)(int n, double v) |
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) |
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{ |
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register EPNODE *ep; |
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void |
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dcleanup(lvl) /* clear definitions (0->vars,1->output,2->consts) */ |
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int lvl; |
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dcleanup( /* clear definitions (0->vars,1->output,2->consts) */ |
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int lvl |
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) |
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{ |
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register int i; |
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register VARDEF *vp; |
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/* if context is global, clear all */ |
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for (i = 0; i < NHASH; i++) |
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for (vp = hashtbl[i]; vp != NULL; vp = vp->next) |
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if (incontext(vp->name)) |
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if (incontext(vp->name)) { |
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if (lvl >= 2) |
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dremove(vp->name); |
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else |
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dclear(vp->name); |
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} |
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if (lvl >= 1) { |
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for (ep = outchan; ep != NULL; ep = ep->sibling) |
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epfree(ep); |
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EPNODE * |
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dlookup(name) /* look up a definition */ |
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char *name; |
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dlookup( /* look up a definition */ |
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char *name |
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) |
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{ |
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register VARDEF *vp; |
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VARDEF * |
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varlookup(name) /* look up a variable */ |
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char *name; |
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varlookup( /* look up a variable */ |
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char *name |
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) |
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{ |
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int lvl = 0; |
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register char *qname; |
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VARDEF * |
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varinsert(name) /* get a link to a variable */ |
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char *name; |
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varinsert( /* get a link to a variable */ |
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char *name |
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) |
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{ |
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register VARDEF *vp; |
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int hv; |
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void |
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libupdate(fn) /* update library links */ |
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char *fn; |
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libupdate( /* update library links */ |
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char *fn |
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) |
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{ |
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register int i; |
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register VARDEF *vp; |
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void |
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varfree(ln) /* release link to variable */ |
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register VARDEF *ln; |
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varfree( /* release link to variable */ |
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register VARDEF *ln |
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) |
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{ |
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register VARDEF *vp; |
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int hv; |
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EPNODE * |
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dfirst() /* return pointer to first definition */ |
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> |
dfirst(void) /* return pointer to first definition */ |
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{ |
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htndx = 0; |
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htpos = NULL; |
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EPNODE * |
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dnext() /* return pointer to next definition */ |
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> |
dnext(void) /* return pointer to next definition */ |
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{ |
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register EPNODE *ep; |
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register char *nm; |
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EPNODE * |
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dpop(name) /* pop a definition */ |
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char *name; |
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> |
dpop( /* pop a definition */ |
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char *name |
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) |
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{ |
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register VARDEF *vp; |
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register EPNODE *dp; |
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void |
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dpush(nm, ep) /* push on a definition */ |
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char *nm; |
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< |
register EPNODE *ep; |
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> |
dpush( /* push on a definition */ |
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> |
char *nm, |
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register EPNODE *ep |
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> |
) |
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{ |
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register VARDEF *vp; |
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void |
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addchan(sp) /* add an output channel assignment */ |
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< |
EPNODE *sp; |
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> |
addchan( /* add an output channel assignment */ |
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> |
EPNODE *sp |
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> |
) |
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{ |
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int ch = sp->v.kid->v.chan; |
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register EPNODE *ep, *epl; |
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void |
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getstatement() /* get next statement */ |
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getstatement(void) /* get next statement */ |
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{ |
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register EPNODE *ep; |
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char *qname; |
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} else { /* ordinary definition */ |
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ep = getdefn(); |
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qname = qualname(dname(ep), 0); |
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if (esupport&E_REDEFW && (vdef = varlookup(qname)) != NULL) |
577 |
> |
if (esupport&E_REDEFW && (vdef = varlookup(qname)) != NULL) { |
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if (vdef->def != NULL && epcmp(ep, vdef->def)) { |
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wputs(qname); |
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if (vdef->def->type == ':') |
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wputs(qname); |
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wputs(": definition hides library function\n"); |
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} |
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} |
589 |
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if (ep->type == ':') |
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dremove(qname); |
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else |
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EPNODE * |
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< |
getdefn() /* A -> SYM = E1 */ |
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< |
/* SYM : E1 */ |
606 |
< |
/* FUNC(SYM,..) = E1 */ |
607 |
< |
/* FUNC(SYM,..) : E1 */ |
604 |
> |
getdefn(void) |
605 |
> |
/* A -> SYM = E1 */ |
606 |
> |
/* SYM : E1 */ |
607 |
> |
/* FUNC(SYM,..) = E1 */ |
608 |
> |
/* FUNC(SYM,..) : E1 */ |
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{ |
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register EPNODE *ep1, *ep2; |
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EPNODE * |
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< |
getchan() /* A -> $N = E1 */ |
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> |
getchan(void) /* A -> $N = E1 */ |
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{ |
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register EPNODE *ep1, *ep2; |
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*/ |
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< |
static double |
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< |
dvalue(name, d) /* evaluate a variable */ |
672 |
< |
char *name; |
673 |
< |
EPNODE *d; |
695 |
> |
static double /* evaluate a variable */ |
696 |
> |
dvalue(char *name, EPNODE *d) |
697 |
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{ |
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register EPNODE *ep1, *ep2; |
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if (eclock >= MAXCLOCK) |
710 |
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eclock = 1; /* wrap clock counter */ |
711 |
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if (ep2->v.tick < MAXCLOCK && |
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ep2->v.tick == 0 | ep2->v.tick != eclock) { |
712 |
> |
(ep2->v.tick == 0) | (ep2->v.tick != eclock)) { |
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ep2->v.tick = d->type == ':' ? MAXCLOCK : eclock; |
714 |
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ep2 = ep2->sibling; |
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ep2->v.num = evalue(ep1); /* needs new value */ |