| 88 |
|
|
| 89 |
|
extern char *savestr(), *emalloc(); |
| 90 |
|
|
| 91 |
– |
extern LIBR *liblookup(); |
| 92 |
– |
|
| 91 |
|
extern VARDEF *argf(); |
| 92 |
|
|
| 93 |
|
#ifdef VARIABLE |
| 155 |
|
{ |
| 156 |
|
register LIBR *lp; |
| 157 |
|
|
| 158 |
< |
if ((lp = liblookup(fname)) == NULL) { |
| 158 |
> |
if ((lp = liblookup(fname)) == NULL) { /* insert */ |
| 159 |
|
if (libsize >= MAXLIB) { |
| 160 |
|
eputs("Too many library functons!\n"); |
| 161 |
|
quit(1); |
| 170 |
|
break; |
| 171 |
|
libsize++; |
| 172 |
|
} |
| 173 |
< |
lp[0].fname = fname; /* must be static! */ |
| 174 |
< |
lp[0].nargs = nargs; |
| 175 |
< |
lp[0].atyp = assign; |
| 176 |
< |
lp[0].f = fptr; |
| 173 |
> |
if (fptr == NULL) { /* delete */ |
| 174 |
> |
while (lp < &library[libsize-1]) { |
| 175 |
> |
lp[0].fname = lp[1].fname; |
| 176 |
> |
lp[0].nargs = lp[1].nargs; |
| 177 |
> |
lp[0].atyp = lp[1].atyp; |
| 178 |
> |
lp[0].f = lp[1].f; |
| 179 |
> |
lp++; |
| 180 |
> |
} |
| 181 |
> |
libsize--; |
| 182 |
> |
} else { /* or assign */ |
| 183 |
> |
lp[0].fname = fname; /* string must be static! */ |
| 184 |
> |
lp[0].nargs = nargs; |
| 185 |
> |
lp[0].atyp = assign; |
| 186 |
> |
lp[0].f = fptr; |
| 187 |
> |
} |
| 188 |
> |
libupdate(fname); /* relink library */ |
| 189 |
|
} |
| 190 |
|
|
| 191 |
|
|
| 337 |
|
|
| 338 |
|
|
| 339 |
|
#ifndef VARIABLE |
| 340 |
+ |
static VARDEF *varlist = NULL; /* our list of dummy variables */ |
| 341 |
+ |
|
| 342 |
+ |
|
| 343 |
|
VARDEF * |
| 344 |
|
varinsert(vname) /* dummy variable insert */ |
| 345 |
|
char *vname; |
| 350 |
|
vp->name = savestr(vname); |
| 351 |
|
vp->nlinks = 1; |
| 352 |
|
vp->def = NULL; |
| 353 |
< |
vp->lib = NULL; |
| 354 |
< |
vp->next = NULL; |
| 353 |
> |
vp->lib = liblookup(vname); |
| 354 |
> |
vp->next = varlist; |
| 355 |
> |
varlist = vp; |
| 356 |
|
return(vp); |
| 357 |
|
} |
| 358 |
|
|
| 360 |
|
varfree(vp) /* free dummy variable */ |
| 361 |
|
register VARDEF *vp; |
| 362 |
|
{ |
| 363 |
+ |
register VARDEF *vp2; |
| 364 |
+ |
|
| 365 |
+ |
if (vp == varlist) |
| 366 |
+ |
varlist = vp->next; |
| 367 |
+ |
else { |
| 368 |
+ |
for (vp2 = varlist; vp2->next != vp; vp2 = vp2->next) |
| 369 |
+ |
; |
| 370 |
+ |
vp2->next = vp->next; |
| 371 |
+ |
} |
| 372 |
|
freestr(vp->name); |
| 373 |
|
efree((char *)vp); |
| 374 |
|
} |
| 375 |
+ |
|
| 376 |
+ |
|
| 377 |
+ |
libupdate(nm) /* update library */ |
| 378 |
+ |
char *nm; |
| 379 |
+ |
{ |
| 380 |
+ |
register VARDEF *vp; |
| 381 |
+ |
|
| 382 |
+ |
for (vp = varlist; vp != NULL; vp = vp->next) |
| 383 |
+ |
vp->lib = liblookup(vp->name); |
| 384 |
+ |
} |
| 385 |
|
#endif |
| 386 |
|
|
| 387 |
|
|
| 394 |
|
static double |
| 395 |
|
libfunc(fname, vp) /* execute library function */ |
| 396 |
|
char *fname; |
| 397 |
< |
register VARDEF *vp; |
| 397 |
> |
VARDEF *vp; |
| 398 |
|
{ |
| 399 |
< |
VARDEF dumdef; |
| 399 |
> |
register LIBR *lp; |
| 400 |
|
double d; |
| 401 |
|
int lasterrno; |
| 402 |
|
|
| 403 |
< |
if (vp == NULL) { |
| 404 |
< |
vp = &dumdef; |
| 405 |
< |
vp->lib = NULL; |
| 406 |
< |
} |
| 407 |
< |
if (((vp->lib == NULL || strcmp(fname, vp->lib->fname)) && |
| 375 |
< |
(vp->lib = liblookup(fname)) == NULL) || |
| 376 |
< |
vp->lib->f == NULL) { |
| 403 |
> |
if (vp != NULL) |
| 404 |
> |
lp = vp->lib; |
| 405 |
> |
else |
| 406 |
> |
lp = liblookup(fname); |
| 407 |
> |
if (lp == NULL) { |
| 408 |
|
eputs(fname); |
| 409 |
|
eputs(": undefined function\n"); |
| 410 |
|
quit(1); |
| 411 |
|
} |
| 412 |
|
lasterrno = errno; |
| 413 |
|
errno = 0; |
| 414 |
< |
d = (*vp->lib->f)(vp->lib->fname); |
| 414 |
> |
d = (*lp->f)(lp->fname); |
| 415 |
|
#ifdef IEEE |
| 416 |
|
if (errno == 0) |
| 417 |
|
if (isnan(d)) |
