| 1 | – | /* Copyright (c) 1992 Regents of the University of California */ | 
| 2 | – |  | 
| 1 |  | #ifndef lint | 
| 2 | < | static char SCCSid[] = "$SunId$ LBL"; | 
| 2 | > | static const char       RCSid[] = "$Id$"; | 
| 3 |  | #endif | 
| 6 | – |  | 
| 4 |  | /* | 
| 5 |  | *  Combine picture files according to calcomp functions. | 
| 6 |  | * | 
| 7 |  | *      1/4/89 | 
| 8 |  | */ | 
| 9 |  |  | 
| 10 | + | #include "platform.h" | 
| 11 |  | #include "standard.h" | 
| 12 | < |  | 
| 12 | > | #include "rtprocess.h" | 
| 13 |  | #include "color.h" | 
| 16 | – |  | 
| 17 | – | #include "resolu.h" | 
| 18 | – |  | 
| 14 |  | #include "calcomp.h" | 
| 20 | – |  | 
| 15 |  | #include "view.h" | 
| 16 |  |  | 
| 17 | < | #define MAXINP          32              /* maximum number of input files */ | 
| 18 | < | #define WINSIZ          17              /* scanline window size */ | 
| 17 | > | #define MAXINP          512             /* maximum number of input files */ | 
| 18 | > | #define WINSIZ          64              /* scanline window size */ | 
| 19 |  | #define MIDSCN          ((WINSIZ-1)/2+1) | 
| 20 |  |  | 
| 21 |  | struct { | 
| 33 |  |  | 
| 34 |  | char    ourfmt[LPICFMT+1] = PICFMT;     /* input picture format */ | 
| 35 |  |  | 
| 36 | + | char    StandardInput[] = "<stdin>"; | 
| 37 |  | char    Command[] = "<Command>"; | 
| 38 |  | char    vcolin[3][4] = {"ri", "gi", "bi"}; | 
| 39 |  | char    vcolout[3][4] = {"ro", "go", "bo"}; | 
| 41 |  | char    vbrtout[] = "lo"; | 
| 42 |  | char    vcolexp[3][4] = {"re", "ge", "be"}; | 
| 43 |  | char    vbrtexp[] = "le"; | 
| 44 | + | char    vpixaspect[] = "pa"; | 
| 45 |  |  | 
| 46 | < | char    vray[6][4] = {"Ox", "Oy", "Oz", "Dx", "Dy", "Dz"}; | 
| 46 | > | char    vray[7][4] = {"Ox", "Oy", "Oz", "Dx", "Dy", "Dz", "T"}; | 
| 47 |  |  | 
| 48 |  | char    vpsize[] = "S"; | 
| 49 |  |  | 
| 50 |  | char    vnfiles[] = "nfiles"; | 
| 51 | + | char    vwhteff[] = "WE"; | 
| 52 |  | char    vxmax[] = "xmax"; | 
| 53 |  | char    vymax[] = "ymax"; | 
| 54 |  | char    vxres[] = "xres"; | 
| 71 |  | int     wrongformat = 0; | 
| 72 |  | int     gotview; | 
| 73 |  |  | 
| 77 | – | FILE    *popen(); | 
| 74 |  |  | 
| 75 | < | extern char     *emalloc(); | 
| 75 | > | static gethfunc tabputs; | 
| 76 | > | static void checkfile(void); | 
| 77 | > | static double rgb_bright(COLOR  clr); | 
| 78 | > | static double xyz_bright(COLOR  clr); | 
| 79 | > | static void init(void); | 
| 80 | > | static void combine(void); | 
| 81 | > | static void advance(void); | 
| 82 | > | static double l_expos(char      *nam); | 
| 83 | > | static double l_pixaspect(char *nm); | 
| 84 | > | static double l_colin(char      *nam); | 
| 85 | > | static double l_ray(char        *nam); | 
| 86 | > | static double l_psize(char *nm); | 
| 87 |  |  | 
| 88 |  |  | 
| 89 | < | main(argc, argv) | 
| 90 | < | int     argc; | 
| 91 | < | char    *argv[]; | 
| 89 | > | int | 
| 90 | > | main( | 
| 91 | > | int     argc, | 
| 92 | > | char    *argv[] | 
| 93 | > | ) | 
| 94 |  | { | 
| 95 |  | int     original; | 
| 96 |  | double  f; | 
| 97 | < | int     a, i; | 
| 98 | < | #ifdef MSDOS | 
| 99 | < | extern int  _fmode; | 
| 100 | < | _fmode = O_BINARY; | 
| 92 | < | setmode(fileno(stdin), O_BINARY); | 
| 93 | < | setmode(fileno(stdout), O_BINARY); | 
| 94 | < | #endif | 
| 97 | > | int     a; | 
| 98 | > | SET_DEFAULT_BINARY(); | 
| 99 | > | SET_FILE_BINARY(stdin); | 
| 100 | > | SET_FILE_BINARY(stdout); | 
| 101 |  | progname = argv[0]; | 
| 102 |  | /* scan options */ | 
| 103 |  | for (a = 1; a < argc; a++) { | 
| 118 |  | break; | 
| 119 |  | } | 
| 120 |  | newheader("RADIANCE", stdout);  /* start header */ | 
| 121 | + | fputnow(stdout); | 
| 122 |  | /* process files */ | 
| 123 |  | for (nfiles = 0; nfiles < MAXINP; nfiles++) { | 
| 124 |  | setcolor(input[nfiles].coef, 1.0, 1.0, 1.0); | 
| 125 |  | setcolor(input[nfiles].expos, 1.0, 1.0, 1.0); | 
| 126 | < | copystruct(&input[nfiles].vw, &stdview); | 
| 126 | > | input[nfiles].vw = stdview; | 
| 127 |  | input[nfiles].pa = 1.0; | 
| 128 |  | } | 
| 129 |  | nfiles = 0; | 
| 137 |  | if (argv[a][0] == '-') | 
| 138 |  | switch (argv[a][1]) { | 
| 139 |  | case '\0': | 
| 140 | < | input[nfiles].name = "<stdin>"; | 
| 140 | > | input[nfiles].name = StandardInput; | 
| 141 |  | input[nfiles].fp = stdin; | 
| 142 |  | break; | 
| 143 |  | case 'o': | 
| 176 |  | colval(input[nfiles].expos,GRN); | 
| 177 |  | colval(input[nfiles].coef,BLU) /= | 
| 178 |  | colval(input[nfiles].expos,BLU); | 
| 179 | + | setcolor(input[nfiles].expos, 1.0, 1.0, 1.0); | 
| 180 |  | } | 
| 181 |  | nfiles++; | 
| 182 |  | original = 0; | 
| 230 |  | eputs( | 
| 231 |  | " [-w][-x xr][-y yr][-e expr][-f file] [ [-o][-s f][-c r g b] pic ..]\n"); | 
| 232 |  | quit(1); | 
| 233 | + | return 1; /* pro forma return */ | 
| 234 |  | } | 
| 235 |  |  | 
| 236 |  |  | 
| 237 | < | tputs(s)                        /* put out string preceded by a tab */ | 
| 238 | < | char    *s; | 
| 237 | > | static int | 
| 238 | > | tabputs(                        /* put out string preceded by a tab */ | 
| 239 | > | char    *s, | 
| 240 | > | void    *p | 
| 241 | > | ) | 
| 242 |  | { | 
| 243 |  | char    fmt[32]; | 
| 244 |  | double  d; | 
| 245 |  | COLOR   ctmp; | 
| 246 |  |  | 
| 247 |  | if (isheadid(s))                        /* header id */ | 
| 248 | < | return;         /* don't echo */ | 
| 248 | > | return(0);      /* don't echo */ | 
| 249 |  | if (formatval(fmt, s)) {                /* check format */ | 
| 250 |  | if (globmatch(ourfmt, fmt)) { | 
| 251 |  | wrongformat = 0; | 
| 252 |  | strcpy(ourfmt, fmt); | 
| 253 |  | } else | 
| 254 | < | wrongformat = 1; | 
| 255 | < | return;         /* don't echo */ | 
| 254 | > | wrongformat = globmatch(PICFMT, fmt) ? 1 : -1; | 
| 255 | > | return(0);      /* don't echo */ | 
| 256 |  | } | 
| 257 |  | if (isexpos(s)) {                       /* exposure */ | 
| 258 |  | d = exposval(s); | 
| 260 |  | } else if (iscolcor(s)) {               /* color correction */ | 
| 261 |  | colcorval(ctmp, s); | 
| 262 |  | multcolor(input[nfiles].expos, ctmp); | 
| 263 | < | } else if (isaspect(s)) { | 
| 263 | > | } else if (isaspect(s)) | 
| 264 |  | input[nfiles].pa *= aspectval(s); | 
| 265 | < | } else if (isview(s) && sscanview(&input[nfiles].vw, s) > 0) | 
| 265 | > | else if (isview(s) && sscanview(&input[nfiles].vw, s) > 0) | 
| 266 |  | gotview++; | 
| 267 |  | /* echo line */ | 
| 268 |  | putchar('\t'); | 
| 269 | < | fputs(s, stdout); | 
| 269 | > | return(fputs(s, stdout)); | 
| 270 |  | } | 
| 271 |  |  | 
| 272 |  |  | 
| 273 | < | checkfile()                     /* ready a file */ | 
| 273 | > | static void | 
| 274 | > | checkfile(void)                 /* ready a file */ | 
| 275 |  | { | 
| 276 |  | register int    i; | 
| 277 |  | /* process header */ | 
| 278 |  | gotview = 0; | 
| 279 |  | fputs(input[nfiles].name, stdout); | 
| 280 |  | fputs(":\n", stdout); | 
| 281 | < | getheader(input[nfiles].fp, tputs, NULL); | 
| 282 | < | if (wrongformat) { | 
| 281 | > | getheader(input[nfiles].fp, tabputs, NULL); | 
| 282 | > | if (wrongformat < 0) { | 
| 283 |  | eputs(input[nfiles].name); | 
| 284 | < | eputs(": not in Radiance picture format\n"); | 
| 284 | > | eputs(": not a Radiance picture\n"); | 
| 285 |  | quit(1); | 
| 286 |  | } | 
| 287 | + | if (wrongformat > 0) { | 
| 288 | + | wputs(input[nfiles].name); | 
| 289 | + | wputs(": warning -- incompatible picture format\n"); | 
| 290 | + | } | 
| 291 |  | if (!gotview || setview(&input[nfiles].vw) != NULL) | 
| 292 |  | input[nfiles].vw.type = 0; | 
| 293 |  | if (!fgetsresolu(&input[nfiles].rs, input[nfiles].fp)) { | 
| 310 |  | } | 
| 311 |  |  | 
| 312 |  |  | 
| 313 | < | double | 
| 314 | < | rgb_bright(clr) | 
| 315 | < | COLOR  clr; | 
| 313 | > | static double | 
| 314 | > | rgb_bright( | 
| 315 | > | COLOR  clr | 
| 316 | > | ) | 
| 317 |  | { | 
| 318 |  | return(bright(clr)); | 
| 319 |  | } | 
| 320 |  |  | 
| 321 |  |  | 
| 322 | < | double | 
| 323 | < | xyz_bright(clr) | 
| 324 | < | COLOR  clr; | 
| 322 | > | static double | 
| 323 | > | xyz_bright( | 
| 324 | > | COLOR  clr | 
| 325 | > | ) | 
| 326 |  | { | 
| 327 |  | return(clr[CIEY]); | 
| 328 |  | } | 
| 331 |  | double  (*ourbright)() = rgb_bright; | 
| 332 |  |  | 
| 333 |  |  | 
| 334 | < | init()                                  /* perform final setup */ | 
| 334 | > | static void | 
| 335 | > | init(void)                                      /* perform final setup */ | 
| 336 |  | { | 
| 317 | – | double  l_colin(), l_expos(), l_ray(), l_psize(); | 
| 337 |  | register int    i; | 
| 338 |  | /* define constants */ | 
| 339 | + | varset("PI", ':', PI); | 
| 340 |  | varset(vnfiles, ':', (double)nfiles); | 
| 341 |  | varset(vxmax, ':', (double)xmax); | 
| 342 |  | varset(vymax, ':', (double)ymax); | 
| 347 |  | } | 
| 348 |  | funset(vbrtexp, 1, ':', l_expos); | 
| 349 |  | funset(vbrtin, 1, '=', l_colin); | 
| 350 | < | for (i = 0; i < 6; i++) | 
| 350 | > | funset(vpixaspect, 1, ':', l_pixaspect); | 
| 351 | > | for (i = 0; i < 7; i++) | 
| 352 |  | funset(vray[i], 1, '=', l_ray); | 
| 353 |  | funset(vpsize, 1, '=', l_psize); | 
| 354 |  | /* set brightness function */ | 
| 355 | < | if (!strcmp(ourfmt, CIEFMT)) | 
| 355 | > | if (!strcmp(ourfmt, CIEFMT)) { | 
| 356 | > | varset(vwhteff, ':', 1.0); | 
| 357 |  | ourbright = xyz_bright; | 
| 358 | + | } else | 
| 359 | + | varset(vwhteff, ':', WHTEFFICACY); | 
| 360 |  | } | 
| 361 |  |  | 
| 362 |  |  | 
| 363 | < | combine()                       /* combine pictures */ | 
| 363 | > | static void | 
| 364 | > | combine(void)                   /* combine pictures */ | 
| 365 |  | { | 
| 366 |  | EPNODE  *coldef[3], *brtdef; | 
| 367 |  | COLOR   *scanout; | 
| 415 |  | quit(1); | 
| 416 |  | } | 
| 417 |  | } | 
| 418 | < | efree(scanout); | 
| 418 | > | efree((char *)scanout); | 
| 419 |  | } | 
| 420 |  |  | 
| 421 |  |  | 
| 422 | < | advance()                       /* read in data for next scanline */ | 
| 422 | > | static void | 
| 423 | > | advance(void)                   /* read in data for next scanline */ | 
| 424 |  | { | 
| 425 |  | int     ytarget; | 
| 426 |  | register COLOR  *st; | 
| 439 |  | eputs(": read error\n"); | 
| 440 |  | quit(1); | 
| 441 |  | } | 
| 442 | < | if (fabs(colval(input[i].coef,RED)-1.0) > 1e-3 || | 
| 443 | < | fabs(colval(input[i].coef,GRN)-1.0) > 1e-3 || | 
| 418 | < | fabs(colval(input[i].coef,BLU)-1.0) > 1e-3) | 
| 419 | < | for (j = 0; j < xmax; j++)  /* adjust color */ | 
| 420 | < | multcolor(st[j], input[i].coef); | 
| 442 | > | for (j = 0; j < xmax; j++)      /* adjust color */ | 
| 443 | > | multcolor(st[j], input[i].coef); | 
| 444 |  | } | 
| 445 |  | } | 
| 446 |  |  | 
| 447 |  |  | 
| 448 | < | double | 
| 449 | < | l_expos(nam)                    /* return picture exposure */ | 
| 450 | < | register char   *nam; | 
| 448 | > | static double | 
| 449 | > | l_expos(                        /* return picture exposure */ | 
| 450 | > | register char   *nam | 
| 451 | > | ) | 
| 452 |  | { | 
| 453 |  | register int    fn, n; | 
| 454 |  |  | 
| 463 |  | return(colval(input[fn].expos,n)); | 
| 464 |  | eputs("Bad call to l_expos()!\n"); | 
| 465 |  | quit(1); | 
| 466 | + | return 1; /* pro forma return */ | 
| 467 |  | } | 
| 468 |  |  | 
| 469 |  |  | 
| 470 | < | double | 
| 471 | < | l_colin(nam)                    /* return color value for picture */ | 
| 447 | < | register char   *nam; | 
| 470 | > | static double | 
| 471 | > | l_pixaspect(char *nm)           /* return pixel aspect ratio */ | 
| 472 |  | { | 
| 473 | + | register int    fn; | 
| 474 | + |  | 
| 475 | + | fn = argument(1) - .5; | 
| 476 | + | if (fn < 0 || fn >= nfiles) | 
| 477 | + | return(1.0); | 
| 478 | + | return(input[fn].pa); | 
| 479 | + | } | 
| 480 | + |  | 
| 481 | + |  | 
| 482 | + | static double | 
| 483 | + | l_colin(                        /* return color value for picture */ | 
| 484 | + | register char   *nam | 
| 485 | + | ) | 
| 486 | + | { | 
| 487 |  | int     fn; | 
| 488 |  | register int    n, xoff, yoff; | 
| 489 |  | double  d; | 
| 490 |  |  | 
| 491 | < | d = argument(1); | 
| 454 | < | if (d > -.5 && d < .5) | 
| 455 | < | return((double)nfiles); | 
| 456 | < | fn = d - .5; | 
| 491 | > | fn = argument(1) - .5; | 
| 492 |  | if (fn < 0 || fn >= nfiles) { | 
| 493 |  | errno = EDOM; | 
| 494 |  | return(0.0); | 
| 531 |  | return(colval(input[fn].scan[MIDSCN+yoff][xscan+xoff],n)); | 
| 532 |  | eputs("Bad call to l_colin()!\n"); | 
| 533 |  | quit(1); | 
| 534 | + | return 1; /* pro forma return */ | 
| 535 |  | } | 
| 536 |  |  | 
| 537 |  |  | 
| 538 | < | double | 
| 539 | < | l_ray(nam)              /* return ray origin or direction */ | 
| 540 | < | register char   *nam; | 
| 538 | > | static double | 
| 539 | > | l_ray(          /* return ray origin or direction */ | 
| 540 | > | register char   *nam | 
| 541 | > | ) | 
| 542 |  | { | 
| 543 |  | static unsigned long    ltick[MAXINP]; | 
| 544 |  | static FVECT    lorg[MAXINP], ldir[MAXINP]; | 
| 545 | < | FLOAT   loc[2]; | 
| 546 | < | double  d; | 
| 545 | > | static double   ldist[MAXINP]; | 
| 546 | > | RREAL   loc[2]; | 
| 547 |  | int     fn; | 
| 548 |  | register int    i; | 
| 549 |  |  | 
| 550 | < | d = argument(1); | 
| 514 | < | if (d > -.5 && d < .5) | 
| 515 | < | return((double)nfiles); | 
| 516 | < | fn = d - .5; | 
| 550 | > | fn = argument(1) - .5; | 
| 551 |  | if (fn < 0 || fn >= nfiles) { | 
| 552 |  | errno = EDOM; | 
| 553 |  | return(0.0); | 
| 554 |  | } | 
| 555 | < | if (ltick[fn] < eclock) {               /* need to compute? */ | 
| 555 | > | if (ltick[fn] != eclock) {              /* need to compute? */ | 
| 556 |  | lorg[fn][0] = lorg[fn][1] = lorg[fn][2] = 0.0; | 
| 557 |  | ldir[fn][0] = ldir[fn][1] = ldir[fn][2] = 0.0; | 
| 558 | + | ldist[fn] = -1.0; | 
| 559 |  | if (input[fn].vw.type == 0) | 
| 560 |  | errno = EDOM; | 
| 561 |  | else { | 
| 562 |  | pix2loc(loc, &input[fn].rs, xscan, ymax-1-yscan); | 
| 563 | < | if (viewray(lorg[fn], ldir[fn], | 
| 564 | < | &input[fn].vw, loc[0], loc[1]) < 0) | 
| 530 | < | errno = ERANGE; | 
| 531 | < | ltick[fn] = eclock; | 
| 563 | > | ldist[fn] = viewray(lorg[fn], ldir[fn], | 
| 564 | > | &input[fn].vw, loc[0], loc[1]); | 
| 565 |  | } | 
| 566 | + | ltick[fn] = eclock; | 
| 567 |  | } | 
| 568 | < | i = 6; | 
| 568 | > | if (nam == vray[i=6]) | 
| 569 | > | return(ldist[fn]); | 
| 570 |  | while (i--) | 
| 571 |  | if (nam == vray[i]) | 
| 572 |  | return(i < 3 ? lorg[fn][i] : ldir[fn][i-3]); | 
| 573 |  | eputs("Bad call to l_ray()!\n"); | 
| 574 |  | quit(1); | 
| 575 | + | return 1; /* pro forma return */ | 
| 576 |  | } | 
| 577 |  |  | 
| 578 |  |  | 
| 579 | < | double | 
| 580 | < | l_psize()                       /* compute pixel size in steradians */ | 
| 579 | > | static double | 
| 580 | > | l_psize(char *nm)               /* compute pixel size in steradians */ | 
| 581 |  | { | 
| 582 |  | static unsigned long    ltick[MAXINP]; | 
| 583 |  | static double   psize[MAXINP]; | 
| 584 | < | FVECT   dir0, org1, dir1; | 
| 585 | < | FLOAT   loc[2]; | 
| 584 | > | FVECT   dir0, org, dirx, diry; | 
| 585 | > | RREAL   locx[2], locy[2]; | 
| 586 |  | double  d; | 
| 587 |  | int     fn; | 
| 588 | + | register int    i; | 
| 589 |  |  | 
| 590 |  | d = argument(1); | 
| 591 | < | if (d > -.5 && d < .5) | 
| 555 | < | return((double)nfiles); | 
| 556 | < | fn = d - .5; | 
| 557 | < | if (fn < 0 || fn >= nfiles) { | 
| 591 | > | if (d < .5 || d >= nfiles+.5) { | 
| 592 |  | errno = EDOM; | 
| 593 |  | return(0.0); | 
| 594 |  | } | 
| 595 | < | if (ltick[fn] < eclock)                 /* need to compute? */ | 
| 596 | < | if (input[fn].vw.type == 0 || input[fn].vw.type == VT_PAR) | 
| 595 | > | fn = d - .5; | 
| 596 | > | if (ltick[fn] != eclock) {              /* need to compute? */ | 
| 597 | > | psize[fn] = 0.0; | 
| 598 | > | if (input[fn].vw.type == 0) | 
| 599 |  | errno = EDOM; | 
| 600 | < | else { | 
| 601 | < | errno = 0; | 
| 602 | < | dir0[0] = funvalue(vray[3], 1, &d); | 
| 603 | < | if (errno) | 
| 604 | < | return(0.0); | 
| 605 | < | dir0[1] = funvalue(vray[4], 1, &d); | 
| 606 | < | if (errno) | 
| 607 | < | return(0.0); | 
| 608 | < | dir0[2] = funvalue(vray[5], 1, &d); | 
| 609 | < | if (errno) | 
| 574 | < | return(0.0); | 
| 575 | < | pix2loc(loc, &input[fn].rs, xscan+1, ymax-yscan); | 
| 576 | < | psize[fn] = 0.0; | 
| 577 | < | if (viewray(org1, dir1, | 
| 578 | < | &input[fn].vw, loc[0], loc[1]) < 0) | 
| 579 | < | errno = ERANGE; | 
| 580 | < | else { | 
| 600 | > | else if (input[fn].vw.type != VT_PAR && | 
| 601 | > | funvalue(vray[6], 1, &d) >= -FTINY) { | 
| 602 | > | for (i = 0; i < 3; i++) | 
| 603 | > | dir0[i] = funvalue(vray[3+i], 1, &d); | 
| 604 | > | pix2loc(locx, &input[fn].rs, xscan+1, ymax-1-yscan); | 
| 605 | > | pix2loc(locy, &input[fn].rs, xscan, ymax-yscan); | 
| 606 | > | if (viewray(org, dirx, &input[fn].vw, | 
| 607 | > | locx[0], locx[1]) >= -FTINY && | 
| 608 | > | viewray(org, diry, &input[fn].vw, | 
| 609 | > | locy[0], locy[1]) >= -FTINY) { | 
| 610 |  | /* approximate solid angle */ | 
| 611 | < | psize[fn] = dist2(dir0, dir1) * input[fn].pa / | 
| 612 | < | (1.0 + input[fn].pa*input[fn].pa); | 
| 613 | < | ltick[fn] = eclock; | 
| 611 | > | for (i = 0; i < 3; i++) { | 
| 612 | > | dirx[i] -= dir0[i]; | 
| 613 | > | diry[i] -= dir0[i]; | 
| 614 | > | } | 
| 615 | > | fcross(dir0, dirx, diry); | 
| 616 | > | psize[fn] = VLEN(dir0); | 
| 617 |  | } | 
| 618 |  | } | 
| 619 | + | ltick[fn] = eclock; | 
| 620 | + | } | 
| 621 |  | return(psize[fn]); | 
| 622 |  | } | 
| 623 |  |  | 
| 624 |  |  | 
| 625 | < | wputs(msg) | 
| 626 | < | char    *msg; | 
| 625 | > | extern void | 
| 626 | > | wputs(char      *msg) | 
| 627 |  | { | 
| 628 |  | if (!nowarn) | 
| 629 |  | eputs(msg); | 
| 630 |  | } | 
| 631 |  |  | 
| 632 |  |  | 
| 633 | < | eputs(msg) | 
| 634 | < | char    *msg; | 
| 633 | > | extern void | 
| 634 | > | eputs(char *msg) | 
| 635 |  | { | 
| 636 |  | fputs(msg, stderr); | 
| 637 |  | } | 
| 638 |  |  | 
| 639 |  |  | 
| 640 | < | quit(code)              /* exit gracefully */ | 
| 641 | < | int  code; | 
| 640 | > | extern void | 
| 641 | > | quit(int code)          /* exit gracefully */ | 
| 642 |  | { | 
| 643 |  | register int  i; | 
| 644 |  | /* close input files */ |