src/rt/rcmain.c

#ifndef lint
static const char       RCSid[] = "$Id: rcmain.c,v 2.18 2018/01/18 19:43:43 greg Exp $";
#endif
/*
 *  rcmain.c - main for rtcontrib ray contribution tracer
 */

#include "copyright.h"

#include <signal.h>
#include <time.h>
#include "rcontrib.h"
#include "random.h"
#include "source.h"
#include "ambient.h"
#include "pmapray.h"
#include "pmapcontrib.h"

int     gargc;                          /* global argc */
char    **gargv;                        /* global argv */
char    *octname;                       /* global octree name */
char    *progname;                      /* global argv[0] */

char    *sigerr[NSIG];                  /* signal error messages */

int     nproc = 1;                      /* number of processes requested */
int     nchild = 0;                     /* number of children (-1 in child) */

int     inpfmt = 'a';                   /* input format */
int     outfmt = 'a';                   /* output format */

int     header = 1;                     /* output header? */
int     force_open = 0;                 /* truncate existing output? */
int     recover = 0;                    /* recover previous output? */
int     accumulate = 1;                 /* input rays per output record */
int     contrib = 0;                    /* computing contributions? */

int     xres = 0;                       /* horizontal (scan) size */
int     yres = 0;                       /* vertical resolution */

int     using_stdout = 0;               /* are we using stdout? */

int     imm_irrad = 0;                  /* compute immediate irradiance? */
int     lim_dist = 0;                   /* limit distance? */

int     report_intvl = 0;               /* reporting interval (seconds) */

const char      *modname[MAXMODLIST];   /* ordered modifier name list */
int             nmods = 0;              /* number of modifiers */

void    (*addobjnotify[8])() = {ambnotify, NULL};

char    RCCONTEXT[] = "RC.";            /* our special evaluation context */


static void
printdefaults(void)                     /* print default values to stdout */
{
        printf("-c %-5d\t\t\t# accumulated rays per record\n", accumulate);
        printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
                        contrib ? "contributions" : "coefficients");
        if (imm_irrad)
                printf("-I+\t\t\t\t# immediate irradiance on\n");
        printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc);
        printf("-x %-9d\t\t\t# %s\n", xres,
                        yres && xres ? "x resolution" : "flush interval");
        printf("-y %-9d\t\t\t# y resolution\n", yres);
        printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" :
                        "-ld-\t\t\t\t# limit distance off\n");
        printf("-h%c\t\t\t\t# %s header\n", header ? '+' : '-',
                        header ? "output" : "no");
        printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
                        inpfmt, outfmt, formstr(inpfmt), formstr(outfmt));
        printf(erract[WARNING].pf != NULL ?
                        "-w+\t\t\t\t# warning messages on\n" :
                        "-w-\t\t\t\t# warning messages off\n");
        print_rdefaults();
}


static void
onsig(                          /* fatal signal */
        int  signo
)
{
        static int  gotsig = 0;

        if (gotsig++)                   /* two signals and we're gone! */
                _exit(signo);

#ifdef SIGALRM
        alarm(15);                      /* allow 15 seconds to clean up */
        signal(SIGALRM, SIG_DFL);       /* make certain we do die */
#endif
        eputs("signal - ");
        eputs(sigerr[signo]);
        eputs("\n");
        quit(3);
}


static void
sigdie(                 /* set fatal signal */
        int  signo,
        char  *msg
)
{
        if (signal(signo, onsig) == SIG_IGN)
                signal(signo, SIG_IGN);
        sigerr[signo] = msg;
}


/* set input/output format */
static void
setformat(const char *fmt)
{
        switch (fmt[0]) {
        case 'f':
        case 'd':
                SET_FILE_BINARY(stdin);
                /* fall through */
        case 'a':
                inpfmt = fmt[0];
                break;
        default:
                goto fmterr;
        }
        switch (fmt[1]) {
        case '\0':
                outfmt = inpfmt;
                return;
        case 'a':
        case 'f':
        case 'd':
        case 'c':
                outfmt = fmt[1];
                break;
        default:
                goto fmterr;
        }
        if (!fmt[2])
                return;
fmterr:
        sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
        error(USER, errmsg);
}


/* Set overriding options */
static void
override_options(void)
{
        shadthresh = 0;
        ambssamp = 0;
        ambacc = 0;
        if (accumulate <= 0)    /* no output flushing for single record */
                xres = yres = 0;
}


int
main(int argc, char *argv[])
{
#define  check(ol,al)           if (argv[i][ol] || \
                                badarg(argc-i-1,argv+i+1,al)) \
                                goto badopt
#define  check_bool(olen,var)           switch (argv[i][olen]) { \
                                case '\0': var = !var; break; \
                                case 'y': case 'Y': case 't': case 'T': \
                                case '+': case '1': var = 1; break; \
                                case 'n': case 'N': case 'f': case 'F': \
                                case '-': case '0': var = 0; break; \
                                default: goto badopt; }
        char    *curout = NULL;
        char    *prms = NULL;
        char    *binval = NULL;
        int     bincnt = 0;
        int     rval;
        int     i;
                                        /* global program name */
        progname = argv[0] = fixargv0(argv[0]);
        gargv = argv;
        gargc = argc;
#if defined(_WIN32) || defined(_WIN64)
        _setmaxstdio(2048);             /* increase file limit to maximum */
#endif
                                        /* initialize calcomp routines early */
        initfunc();
        setcontext(RCCONTEXT);
                                        /* option city */
        for (i = 1; i < argc; i++) {
                                                /* expand arguments */
                while ((rval = expandarg(&argc, &argv, i)) > 0)
                        ;
                if (rval < 0) {
                        sprintf(errmsg, "cannot expand '%s'", argv[i]);
                        error(SYSTEM, errmsg);
                }
                if (argv[i] == NULL || argv[i][0] != '-')
                        break;                  /* break from options */
                if (!strcmp(argv[i], "-version")) {
                        puts(VersionID);
                        quit(0);
                }
                if (!strcmp(argv[i], "-defaults") ||
                                !strcmp(argv[i], "-help")) {
                        override_options();
                        printdefaults();
                        quit(0);
                }
                rval = getrenderopt(argc-i, argv+i);
                if (rval >= 0) {
                        i += rval;
                        continue;
                }
                switch (argv[i][1]) {
                case 'n':                       /* number of cores */
                        check(2,"i");
                        nproc = atoi(argv[++i]);
                        if (nproc <= 0)
                                error(USER, "bad number of processes");
                        break;
                case 'V':                       /* output contributions */
                        check_bool(2,contrib);
                        break;
                case 'x':                       /* x resolution */
                        check(2,"i");
                        xres = atoi(argv[++i]);
                        break;
                case 'y':                       /* y resolution */
                        check(2,"i");
                        yres = atoi(argv[++i]);
                        break;
                case 'w':                       /* warnings */
                        rval = (erract[WARNING].pf != NULL);
                        check_bool(2,rval);
                        if (rval) erract[WARNING].pf = wputs;
                        else erract[WARNING].pf = NULL;
                        break;
                case 'e':                       /* expression */
                        check(2,"s");
                        scompile(argv[++i], NULL, 0);
                        break;
                case 'l':                       /* limit distance */
                        if (argv[i][2] != 'd')
                                goto badopt;
                        check_bool(3,lim_dist);
                        break;
                case 'I':                       /* immed. irradiance */
                        check_bool(2,imm_irrad);
                        break;
                case 'f':                       /* file or force or format */
                        if (!argv[i][2]) {
                                check(2,"s");
                                loadfunc(argv[++i]);
                                break;
                        }
                        if (argv[i][2] == 'o') {
                                check_bool(3,force_open);
                                break;
                        }
                        setformat(argv[i]+2);
                        break;
                case 'o':                       /* output */
                        check(2,"s");
                        curout = argv[++i];
                        break;
                case 'c':                       /* input rays per output */
                        check(2,"i");
                        accumulate = atoi(argv[++i]);
                        break;
                case 'r':                       /* recover output */
                        check_bool(2,recover);
                        break;
                case 'h':                       /* header output */
                        check_bool(2,header);
                        break;
                case 'p':                       /* parameter setting(s) */
                        check(2,"s");
                        set_eparams(prms = argv[++i]);
                        break;
                case 'b':                       /* bin expression/count */
                        if (argv[i][2] == 'n') {
                                check(3,"s");
                                bincnt = (int)(eval(argv[++i]) + .5);
                                break;
                        }
                        check(2,"s");
                        binval = argv[++i];
                        break;
                case 'm':                       /* modifier name */
                        check(2,"s");
                        addmodifier(argv[++i], curout, prms, binval, bincnt);
                        break;
                case 'M':                       /* modifier file */
                        check(2,"s");
                        addmodfile(argv[++i], curout, prms, binval, bincnt);
                        break;
                case 't':                       /* reporting interval */
                        check(2,"i");
                        report_intvl = atoi(argv[++i]);
                        break;
                default:
                        goto badopt;
                }
        }
        if (nmods <= 0)
                error(USER, "missing required modifier argument");
                                        /* override some option settings */
        override_options();
                                        /* initialize object types */
        initotypes();
                                        /* initialize urand */
        if (rand_samp) {
                srandom((long)time(0));
                initurand(0);
        } else {
                srandom(0L);
                initurand(2048);
        }
                                        /* set up signal handling */
        sigdie(SIGINT, "Interrupt");
#ifdef SIGHUP
        sigdie(SIGHUP, "Hangup");
#endif
        sigdie(SIGTERM, "Terminate");
#ifdef SIGPIPE
        sigdie(SIGPIPE, "Broken pipe");
#endif
#ifdef SIGALRM
        sigdie(SIGALRM, "Alarm clock");
#endif
#ifdef  SIGXCPU
        sigdie(SIGXCPU, "CPU limit exceeded");
        sigdie(SIGXFSZ, "File size exceeded");
#endif
#ifdef  NICE
        nice(NICE);                     /* lower priority */
#endif
                                        /* get octree */
        if (i == argc)
                octname = NULL;
        else if (i == argc-1)
                octname = argv[i];
        else
                goto badopt;
        if (octname == NULL)
                error(USER, "missing octree argument");

        readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL);
        nsceneobjs = nobjects;

        /* PMAP: set up & load photon maps */
        ray_init_pmap();     
        
        marksources();                  /* find and mark sources */
        
        /* PMAP: init photon map for light source contributions */
        initPmapContrib(&modconttab, nmods);

        setambient();                   /* initialize ambient calculation */
        
        rcontrib();                     /* trace ray contributions (loop) */

        ambsync();                      /* flush ambient file */

        /* PMAP: free photon maps */
        ray_done_pmap();     
        
        quit(0);        /* exit clean */

badopt:
        fprintf(stderr,
"Usage: %s [-n nprocs][-V][-c count][-r][-e expr][-f source][-o ospec][-p p1=V1,p2=V2][-b binv][-bn N] {-m mod | -M file} [rtrace options] octree\n",
                        progname);
        sprintf(errmsg, "command line error at '%s'", argv[i]);
        error(USER, errmsg);
        return(1);      /* pro forma return */

#undef  check
#undef  check_bool
}


void
wputs(                          /* warning output function */
        char    *s
)
{
        int  lasterrno = errno;
        eputs(s);
        errno = lasterrno;
}


void
eputs(                          /* put string to stderr */
        char  *s
)
{
        static int  midline = 0;

        if (!*s)
                return;
        if (!midline++) {
                fputs(progname, stderr);
                fputs(": ", stderr);
        }
        fputs(s, stderr);
        if (s[strlen(s)-1] == '\n') {
                fflush(stderr);
                midline = 0;
        }
}
Revision:	2.19
Committed:	Wed Sep 9 21:28:19 2020 UTC (3 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.18:	+7 -1 lines
Log Message:	feat(rcontrib,rfluxmtx): Added -t option to specify progress report interval
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.19	static const char RCSid[] = "$Id: rcmain.c,v 2.18 2018/01/18 19:43:43 greg Exp $";
3	greg	2.1	#endif
4			/*
5			* rcmain.c - main for rtcontrib ray contribution tracer
6			*/
7
8			#include "copyright.h"
9
10			#include <signal.h>
11	greg	2.10	#include <time.h>
12	greg	2.1	#include "rcontrib.h"
13	greg	2.6	#include "random.h"
14	greg	2.1	#include "source.h"
15			#include "ambient.h"
16	greg	2.14	#include "pmapray.h"
17			#include "pmapcontrib.h"
18	greg	2.1
19			int gargc; /* global argc */
20			char *gargv; / global argv */
21			char octname; / global octree name */
22			char progname; / global argv[0] */
23
24			char sigerr[NSIG]; / signal error messages */
25
26			int nproc = 1; /* number of processes requested */
27			int nchild = 0; /* number of children (-1 in child) */
28
29			int inpfmt = 'a'; /* input format */
30			int outfmt = 'a'; /* output format */
31
32			int header = 1; /* output header? */
33			int force_open = 0; /* truncate existing output? */
34			int recover = 0; /* recover previous output? */
35			int accumulate = 1; /* input rays per output record */
36			int contrib = 0; /* computing contributions? */
37
38			int xres = 0; /* horizontal (scan) size */
39			int yres = 0; /* vertical resolution */
40
41			int using_stdout = 0; /* are we using stdout? */
42
43			int imm_irrad = 0; /* compute immediate irradiance? */
44			int lim_dist = 0; /* limit distance? */
45
46	greg	2.19	int report_intvl = 0; /* reporting interval (seconds) */
47
48	greg	2.1	const char modname[MAXMODLIST]; / ordered modifier name list */
49			int nmods = 0; /* number of modifiers */
50
51	greg	2.4	void (*addobjnotify[8])() = {ambnotify, NULL};
52
53	greg	2.18	char RCCONTEXT[] = "RC."; /* our special evaluation context */
54	greg	2.1
55
56			static void
57			printdefaults(void) /* print default values to stdout */
58			{
59	greg	2.3	printf("-c %-5d\t\t\t# accumulated rays per record\n", accumulate);
60			printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
61			contrib ? "contributions" : "coefficients");
62	greg	2.1	if (imm_irrad)
63			printf("-I+\t\t\t\t# immediate irradiance on\n");
64			printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc);
65			printf("-x %-9d\t\t\t# %s\n", xres,
66			yres && xres ? "x resolution" : "flush interval");
67			printf("-y %-9d\t\t\t# y resolution\n", yres);
68			printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" :
69			"-ld-\t\t\t\t# limit distance off\n");
70			printf("-h%c\t\t\t\t# %s header\n", header ? '+' : '-',
71			header ? "output" : "no");
72			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
73			inpfmt, outfmt, formstr(inpfmt), formstr(outfmt));
74			printf(erract[WARNING].pf != NULL ?
75			"-w+\t\t\t\t# warning messages on\n" :
76			"-w-\t\t\t\t# warning messages off\n");
77			print_rdefaults();
78			}
79
80
81			static void
82			onsig( /* fatal signal */
83			int signo
84			)
85			{
86			static int gotsig = 0;
87
88			if (gotsig++) /* two signals and we're gone! */
89			_exit(signo);
90
91			#ifdef SIGALRM
92			alarm(15); /* allow 15 seconds to clean up */
93			signal(SIGALRM, SIG_DFL); /* make certain we do die */
94			#endif
95			eputs("signal - ");
96			eputs(sigerr[signo]);
97			eputs("\n");
98			quit(3);
99			}
100
101
102			static void
103			sigdie( /* set fatal signal */
104			int signo,
105			char *msg
106			)
107			{
108			if (signal(signo, onsig) == SIG_IGN)
109			signal(signo, SIG_IGN);
110			sigerr[signo] = msg;
111			}
112
113
114			/* set input/output format */
115			static void
116			setformat(const char *fmt)
117			{
118			switch (fmt[0]) {
119			case 'f':
120			case 'd':
121			SET_FILE_BINARY(stdin);
122			/* fall through */
123			case 'a':
124			inpfmt = fmt[0];
125			break;
126			default:
127			goto fmterr;
128			}
129			switch (fmt[1]) {
130			case '\0':
131			outfmt = inpfmt;
132			return;
133			case 'a':
134			case 'f':
135			case 'd':
136			case 'c':
137			outfmt = fmt[1];
138			break;
139			default:
140			goto fmterr;
141			}
142			if (!fmt[2])
143			return;
144			fmterr:
145			sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
146			error(USER, errmsg);
147			}
148
149
150			/* Set overriding options */
151			static void
152			override_options(void)
153			{
154			shadthresh = 0;
155			ambssamp = 0;
156			ambacc = 0;
157			if (accumulate <= 0) /* no output flushing for single record */
158			xres = yres = 0;
159			}
160
161
162			int
163			main(int argc, char *argv[])
164			{
165			#define check(ol,al) if (argv[i][ol] \|\| \
166			badarg(argc-i-1,argv+i+1,al)) \
167			goto badopt
168	schorsch	2.15	#define check_bool(olen,var) switch (argv[i][olen]) { \
169	greg	2.1	case '\0': var = !var; break; \
170			case 'y': case 'Y': case 't': case 'T': \
171			case '+': case '1': var = 1; break; \
172			case 'n': case 'N': case 'f': case 'F': \
173			case '-': case '0': var = 0; break; \
174			default: goto badopt; }
175			char *curout = NULL;
176	greg	2.12	char *prms = NULL;
177	greg	2.1	char *binval = NULL;
178			int bincnt = 0;
179			int rval;
180			int i;
181			/* global program name */
182			progname = argv[0] = fixargv0(argv[0]);
183			gargv = argv;
184			gargc = argc;
185	greg	2.17	#if defined(_WIN32) \|\| defined(_WIN64)
186			_setmaxstdio(2048); /* increase file limit to maximum */
187			#endif
188	greg	2.1	/* initialize calcomp routines early */
189			initfunc();
190			setcontext(RCCONTEXT);
191			/* option city */
192			for (i = 1; i < argc; i++) {
193			/* expand arguments */
194			while ((rval = expandarg(&argc, &argv, i)) > 0)
195			;
196			if (rval < 0) {
197			sprintf(errmsg, "cannot expand '%s'", argv[i]);
198			error(SYSTEM, errmsg);
199			}
200			if (argv[i] == NULL \|\| argv[i][0] != '-')
201			break; /* break from options */
202			if (!strcmp(argv[i], "-version")) {
203			puts(VersionID);
204			quit(0);
205			}
206			if (!strcmp(argv[i], "-defaults") \|\|
207			!strcmp(argv[i], "-help")) {
208			override_options();
209			printdefaults();
210			quit(0);
211			}
212			rval = getrenderopt(argc-i, argv+i);
213			if (rval >= 0) {
214			i += rval;
215			continue;
216			}
217			switch (argv[i][1]) {
218			case 'n': /* number of cores */
219			check(2,"i");
220			nproc = atoi(argv[++i]);
221			if (nproc <= 0)
222			error(USER, "bad number of processes");
223			break;
224			case 'V': /* output contributions */
225	schorsch	2.15	check_bool(2,contrib);
226	greg	2.1	break;
227			case 'x': /* x resolution */
228			check(2,"i");
229			xres = atoi(argv[++i]);
230			break;
231			case 'y': /* y resolution */
232			check(2,"i");
233			yres = atoi(argv[++i]);
234			break;
235			case 'w': /* warnings */
236	greg	2.2	rval = (erract[WARNING].pf != NULL);
237	schorsch	2.15	check_bool(2,rval);
238	greg	2.1	if (rval) erract[WARNING].pf = wputs;
239			else erract[WARNING].pf = NULL;
240			break;
241			case 'e': /* expression */
242			check(2,"s");
243			scompile(argv[++i], NULL, 0);
244			break;
245			case 'l': /* limit distance */
246			if (argv[i][2] != 'd')
247			goto badopt;
248	schorsch	2.15	check_bool(3,lim_dist);
249	greg	2.1	break;
250			case 'I': /* immed. irradiance */
251	schorsch	2.15	check_bool(2,imm_irrad);
252	greg	2.1	break;
253			case 'f': /* file or force or format */
254			if (!argv[i][2]) {
255			check(2,"s");
256			loadfunc(argv[++i]);
257			break;
258			}
259			if (argv[i][2] == 'o') {
260	schorsch	2.15	check_bool(3,force_open);
261	greg	2.1	break;
262			}
263			setformat(argv[i]+2);
264			break;
265			case 'o': /* output */
266			check(2,"s");
267			curout = argv[++i];
268			break;
269			case 'c': /* input rays per output */
270			check(2,"i");
271			accumulate = atoi(argv[++i]);
272			break;
273			case 'r': /* recover output */
274	schorsch	2.15	check_bool(2,recover);
275	greg	2.1	break;
276			case 'h': /* header output */
277	schorsch	2.15	check_bool(2,header);
278	greg	2.1	break;
279	greg	2.12	case 'p': /* parameter setting(s) */
280			check(2,"s");
281	greg	2.13	set_eparams(prms = argv[++i]);
282	greg	2.12	break;
283	greg	2.1	case 'b': /* bin expression/count */
284			if (argv[i][2] == 'n') {
285			check(3,"s");
286			bincnt = (int)(eval(argv[++i]) + .5);
287			break;
288			}
289			check(2,"s");
290			binval = argv[++i];
291			break;
292			case 'm': /* modifier name */
293			check(2,"s");
294	greg	2.12	addmodifier(argv[++i], curout, prms, binval, bincnt);
295	greg	2.1	break;
296			case 'M': /* modifier file */
297			check(2,"s");
298	greg	2.12	addmodfile(argv[++i], curout, prms, binval, bincnt);
299	greg	2.1	break;
300	greg	2.19	case 't': /* reporting interval */
301			check(2,"i");
302			report_intvl = atoi(argv[++i]);
303			break;
304	greg	2.1	default:
305			goto badopt;
306			}
307			}
308	greg	2.11	if (nmods <= 0)
309			error(USER, "missing required modifier argument");
310	greg	2.1	/* override some option settings */
311			override_options();
312			/* initialize object types */
313			initotypes();
314			/* initialize urand */
315			if (rand_samp) {
316			srandom((long)time(0));
317			initurand(0);
318			} else {
319			srandom(0L);
320			initurand(2048);
321			}
322			/* set up signal handling */
323			sigdie(SIGINT, "Interrupt");
324			#ifdef SIGHUP
325			sigdie(SIGHUP, "Hangup");
326			#endif
327			sigdie(SIGTERM, "Terminate");
328			#ifdef SIGPIPE
329			sigdie(SIGPIPE, "Broken pipe");
330			#endif
331			#ifdef SIGALRM
332			sigdie(SIGALRM, "Alarm clock");
333			#endif
334			#ifdef SIGXCPU
335			sigdie(SIGXCPU, "CPU limit exceeded");
336			sigdie(SIGXFSZ, "File size exceeded");
337			#endif
338			#ifdef NICE
339			nice(NICE); /* lower priority */
340			#endif
341			/* get octree */
342			if (i == argc)
343			octname = NULL;
344			else if (i == argc-1)
345			octname = argv[i];
346			else
347			goto badopt;
348			if (octname == NULL)
349			error(USER, "missing octree argument");
350
351			readoct(octname, ~(IO_FILES\|IO_INFO), &thescene, NULL);
352			nsceneobjs = nobjects;
353
354	greg	2.14	/* PMAP: set up & load photon maps */
355			ray_init_pmap();
356
357	greg	2.1	marksources(); /* find and mark sources */
358	greg	2.14
359			/* PMAP: init photon map for light source contributions */
360			initPmapContrib(&modconttab, nmods);
361	greg	2.1
362			setambient(); /* initialize ambient calculation */
363	greg	2.14
364	greg	2.2	rcontrib(); /* trace ray contributions (loop) */
365	greg	2.1
366			ambsync(); /* flush ambient file */
367
368	greg	2.14	/* PMAP: free photon maps */
369			ray_done_pmap();
370
371	greg	2.1	quit(0); /* exit clean */
372
373			badopt:
374			fprintf(stderr,
375	greg	2.16	"Usage: %s [-n nprocs][-V][-c count][-r][-e expr][-f source][-o ospec][-p p1=V1,p2=V2][-b binv][-bn N] {-m mod \| -M file} [rtrace options] octree\n",
376	greg	2.1	progname);
377			sprintf(errmsg, "command line error at '%s'", argv[i]);
378			error(USER, errmsg);
379			return(1); /* pro forma return */
380
381			#undef check
382	schorsch	2.15	#undef check_bool
383	greg	2.1	}
384
385
386			void
387			wputs( /* warning output function */
388			char *s
389			)
390			{
391			int lasterrno = errno;
392			eputs(s);
393			errno = lasterrno;
394			}
395
396
397			void
398			eputs( /* put string to stderr */
399			char *s
400			)
401			{
402			static int midline = 0;
403
404			if (!*s)
405			return;
406			if (!midline++) {
407			fputs(progname, stderr);
408			fputs(": ", stderr);
409			}
410			fputs(s, stderr);
411			if (s[strlen(s)-1] == '\n') {
412			fflush(stderr);
413			midline = 0;
414			}
415			}