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#define MAXLIB 64 /* maximum number of library functions */ |
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#endif |
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43 |
< |
static double l_if(), l_select(), l_rand(); |
44 |
< |
static double l_floor(), l_ceil(); |
45 |
< |
static double l_sqrt(); |
46 |
< |
static double l_sin(), l_cos(), l_tan(); |
47 |
< |
static double l_asin(), l_acos(), l_atan(), l_atan2(); |
48 |
< |
static double l_exp(), l_log(), l_log10(); |
43 |
> |
static double l_if(char *), l_select(char *), l_rand(char *); |
44 |
> |
static double l_floor(char *), l_ceil(char *); |
45 |
> |
static double l_sqrt(char *); |
46 |
> |
static double l_sin(char *), l_cos(char *), l_tan(char *); |
47 |
> |
static double l_asin(char *), l_acos(char *), l_atan(char *), l_atan2(char *); |
48 |
> |
static double l_exp(char *), l_log(char *), l_log10(char *); |
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|
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/* functions must be listed alphabetically */ |
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static LIBR library[MAXLIB] = { |
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|
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int |
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< |
fundefined(fname) /* return # of arguments for function */ |
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< |
char *fname; |
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> |
fundefined( /* return # of arguments for function */ |
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> |
char *fname |
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> |
) |
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{ |
80 |
< |
register LIBR *lp; |
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< |
register VARDEF *vp; |
80 |
> |
LIBR *lp; |
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> |
VARDEF *vp; |
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|
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if ((vp = varlookup(fname)) != NULL && vp->def != NULL |
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&& vp->def->v.kid->type == FUNC) |
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double |
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< |
funvalue(fname, n, a) /* return a function value to the user */ |
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< |
char *fname; |
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< |
int n; |
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< |
double *a; |
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> |
funvalue( /* return a function value to the user */ |
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> |
char *fname, |
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> |
int n, |
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> |
double *a |
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> |
) |
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{ |
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ACTIVATION act; |
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< |
register VARDEF *vp; |
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> |
VARDEF *vp; |
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double rval; |
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/* push environment */ |
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act.name = fname; |
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void |
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funset(fname, nargs, assign, fptr) /* set a library function */ |
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< |
char *fname; |
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< |
int nargs; |
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< |
int assign; |
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< |
double (*fptr)(); |
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> |
funset( /* set a library function */ |
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> |
char *fname, |
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> |
int nargs, |
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> |
int assign, |
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> |
double (*fptr)(char *) |
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> |
) |
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{ |
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int oldlibsize = libsize; |
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char *cp; |
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< |
register LIBR *lp; |
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> |
LIBR *lp; |
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/* check for context */ |
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for (cp = fname; *cp; cp++) |
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; |
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quit(1); |
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} |
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for (lp = &library[libsize]; lp > library; lp--) |
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< |
if (strcmp(lp[-1].fname, fname) > 0) { |
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< |
lp[0].fname = lp[-1].fname; |
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< |
lp[0].nargs = lp[-1].nargs; |
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< |
lp[0].atyp = lp[-1].atyp; |
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< |
lp[0].f = lp[-1].f; |
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< |
} else |
149 |
> |
if (strcmp(lp[-1].fname, fname) > 0) |
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> |
lp[0] = lp[-1]; |
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> |
else |
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break; |
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libsize++; |
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} |
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if (fptr == NULL) { /* delete */ |
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while (lp < &library[libsize-1]) { |
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< |
lp[0].fname = lp[1].fname; |
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< |
lp[0].nargs = lp[1].nargs; |
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< |
lp[0].atyp = lp[1].atyp; |
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< |
lp[0].f = lp[1].f; |
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> |
lp[0] = lp[1]; |
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lp++; |
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} |
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libsize--; |
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int |
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< |
nargum() /* return number of available arguments */ |
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> |
nargum(void) /* return number of available arguments */ |
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{ |
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< |
register int n; |
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> |
int n; |
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|
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if (curact == NULL) |
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return(0); |
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double |
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< |
argument(n) /* return nth argument for active function */ |
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< |
register int n; |
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> |
argument(int n) /* return nth argument for active function */ |
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{ |
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< |
register ACTIVATION *actp = curact; |
192 |
< |
register EPNODE *ep; |
191 |
> |
ACTIVATION *actp = curact; |
192 |
> |
EPNODE *ep = NULL; |
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double aval; |
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|
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if (actp == NULL || --n < 0) { |
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VARDEF * |
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< |
argf(n) /* return function def for nth argument */ |
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< |
int n; |
220 |
> |
argf(int n) /* return function def for nth argument */ |
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{ |
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< |
register ACTIVATION *actp; |
223 |
< |
register EPNODE *ep; |
222 |
> |
ACTIVATION *actp; |
223 |
> |
EPNODE *ep; |
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|
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for (actp = curact; actp != NULL; actp = actp->prev) { |
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255 |
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char * |
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< |
argfun(n) /* return function name for nth argument */ |
264 |
< |
int n; |
258 |
> |
argfun(int n) /* return function name for nth argument */ |
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{ |
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return(argf(n)->name); |
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} |
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double |
265 |
< |
efunc(ep) /* evaluate a function */ |
272 |
< |
register EPNODE *ep; |
265 |
> |
efunc(EPNODE *ep) /* evaluate a function */ |
266 |
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{ |
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ACTIVATION act; |
268 |
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double alist[ALISTSIZ]; |
269 |
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double rval; |
270 |
< |
register VARDEF *dp; |
270 |
> |
VARDEF *dp; |
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/* push environment */ |
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dp = resolve(ep->v.kid); |
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act.name = dp->name; |
288 |
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|
289 |
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|
290 |
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LIBR * |
291 |
< |
liblookup(fname) /* look up a library function */ |
299 |
< |
char *fname; |
291 |
> |
liblookup(char *fname) /* look up a library function */ |
292 |
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{ |
293 |
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int upper, lower; |
294 |
< |
register int cm, i; |
294 |
> |
int cm, i; |
295 |
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|
296 |
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lower = 0; |
297 |
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upper = cm = libsize; |
316 |
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317 |
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318 |
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static double |
319 |
< |
libfunc(fname, vp) /* execute library function */ |
320 |
< |
char *fname; |
321 |
< |
VARDEF *vp; |
319 |
> |
libfunc( /* execute library function */ |
320 |
> |
char *fname, |
321 |
> |
VARDEF *vp |
322 |
> |
) |
323 |
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{ |
324 |
< |
register LIBR *lp; |
324 |
> |
LIBR *lp; |
325 |
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double d; |
326 |
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int lasterrno; |
327 |
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|
337 |
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lasterrno = errno; |
338 |
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errno = 0; |
339 |
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d = (*lp->f)(lp->fname); |
340 |
< |
#ifdef IEEE |
340 |
> |
#ifdef isnan |
341 |
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if (errno == 0) |
342 |
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if (isnan(d)) |
343 |
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errno = EDOM; |
365 |
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|
366 |
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|
367 |
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static double |
368 |
< |
l_if() /* if(cond, then, else) conditional expression */ |
368 |
> |
l_if(char *nm) /* if(cond, then, else) conditional expression */ |
369 |
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/* cond evaluates true if greater than zero */ |
370 |
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{ |
371 |
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if (argument(1) > 0.0) |
376 |
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|
377 |
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|
378 |
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static double |
379 |
< |
l_select() /* return argument #(A1+1) */ |
379 |
> |
l_select(char *nm) /* return argument #(A1+1) */ |
380 |
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{ |
381 |
< |
register int n; |
381 |
> |
int n; |
382 |
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|
383 |
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n = (int)(argument(1) + .5); |
384 |
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if (n == 0) |
392 |
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|
393 |
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|
394 |
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static double |
395 |
< |
l_rand() /* random function between 0 and 1 */ |
395 |
> |
l_rand(char *nm) /* random function between 0 and 1 */ |
396 |
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{ |
397 |
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double x; |
398 |
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|
405 |
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|
406 |
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|
407 |
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static double |
408 |
< |
l_floor() /* return largest integer not greater than arg1 */ |
408 |
> |
l_floor(char *nm) /* return largest integer not greater than arg1 */ |
409 |
|
{ |
410 |
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return(floor(argument(1))); |
411 |
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} |
412 |
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|
413 |
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|
414 |
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static double |
415 |
< |
l_ceil() /* return smallest integer not less than arg1 */ |
415 |
> |
l_ceil(char *nm) /* return smallest integer not less than arg1 */ |
416 |
|
{ |
417 |
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return(ceil(argument(1))); |
418 |
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} |
419 |
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|
420 |
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|
421 |
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static double |
422 |
< |
l_sqrt() |
422 |
> |
l_sqrt(char *nm) |
423 |
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{ |
424 |
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return(sqrt(argument(1))); |
425 |
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} |
426 |
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|
427 |
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|
428 |
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static double |
429 |
< |
l_sin() |
429 |
> |
l_sin(char *nm) |
430 |
|
{ |
431 |
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return(sin(argument(1))); |
432 |
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} |
433 |
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|
434 |
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|
435 |
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static double |
436 |
< |
l_cos() |
436 |
> |
l_cos(char *nm) |
437 |
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{ |
438 |
|
return(cos(argument(1))); |
439 |
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} |
440 |
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|
441 |
|
|
442 |
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static double |
443 |
< |
l_tan() |
443 |
> |
l_tan(char *nm) |
444 |
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{ |
445 |
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return(tan(argument(1))); |
446 |
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} |
447 |
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|
448 |
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|
449 |
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static double |
450 |
< |
l_asin() |
450 |
> |
l_asin(char *nm) |
451 |
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{ |
452 |
|
return(asin(argument(1))); |
453 |
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} |
454 |
|
|
455 |
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|
456 |
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static double |
457 |
< |
l_acos() |
457 |
> |
l_acos(char *nm) |
458 |
|
{ |
459 |
|
return(acos(argument(1))); |
460 |
|
} |
461 |
|
|
462 |
|
|
463 |
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static double |
464 |
< |
l_atan() |
464 |
> |
l_atan(char *nm) |
465 |
|
{ |
466 |
|
return(atan(argument(1))); |
467 |
|
} |
468 |
|
|
469 |
|
|
470 |
|
static double |
471 |
< |
l_atan2() |
471 |
> |
l_atan2(char *nm) |
472 |
|
{ |
473 |
|
return(atan2(argument(1), argument(2))); |
474 |
|
} |
475 |
|
|
476 |
|
|
477 |
|
static double |
478 |
< |
l_exp() |
478 |
> |
l_exp(char *nm) |
479 |
|
{ |
480 |
|
return(exp(argument(1))); |
481 |
|
} |
482 |
|
|
483 |
|
|
484 |
|
static double |
485 |
< |
l_log() |
485 |
> |
l_log(char *nm) |
486 |
|
{ |
487 |
|
return(log(argument(1))); |
488 |
|
} |
489 |
|
|
490 |
|
|
491 |
|
static double |
492 |
< |
l_log10() |
492 |
> |
l_log10(char *nm) |
493 |
|
{ |
494 |
|
return(log10(argument(1))); |
495 |
|
} |