--- ray/src/rt/ambient.c	2003/06/05 19:29:34	2.50
+++ ray/src/rt/ambient.c	2003/07/27 22:12:03	2.54
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: ambient.c,v 2.50 2003/06/05 19:29:34 schorsch Exp $";
+static const char	RCSid[] = "$Id: ambient.c,v 2.54 2003/07/27 22:12:03 schorsch Exp $";
 #endif
 /*
  *  ambient.c - routines dealing with ambient (inter-reflected) component.
@@ -9,6 +9,8 @@ static const char	RCSid[] = "$Id: ambient.c,v 2.50 200
 
 #include "copyright.h"
 
+#include <string.h>
+
 #include  "platform.h"
 #include  "ray.h"
 #include  "otypes.h"
@@ -163,7 +165,9 @@ setambient()				/* initialize calculation */
 					(flen - pos)/AMBVALSIZ);
 			error(WARNING, errmsg);
 			fseek(ambfp, pos, 0);
+#ifndef _WIN32 /* XXX we need a replacement for that one */
 			ftruncate(fileno(ambfp), (off_t)pos);
+#endif
 		}
 	} else if ((ambfp = fopen(ambfile, "w+")) != NULL) {
 		initambfile(1);			/* else create new file */
@@ -276,7 +280,7 @@ FVECT  nrm;
 		return;
 dumbamb:					/* return global value */
 	copycolor(acol, ambval);
-	if (ambvwt <= 0 | navsum == 0)
+	if ((ambvwt <= 0) | (navsum == 0))
 		return;
 	l = bright(ambval);			/* average in computations */
 	if (l > FTINY) {
@@ -525,7 +529,7 @@ register AMBVAL  *aval;
 
 	if ((av = newambval()) == NULL)
 		error(SYSTEM, "out of memory in avstore");
-	copystruct(av, aval);
+	*av = *aval;
 	av->latick = ambclock;
 	av->next = NULL;
 	nambvals++;
@@ -560,7 +564,7 @@ newambtree()				/* allocate 8 ambient tree structs */
 	}
 	atp = atfreelist;
 	atfreelist = atp->kid;
-	bzero((char *)atp, 8*sizeof(AMBTREE));
+	memset((char *)atp, '\0', 8*sizeof(AMBTREE));
 	return(atp);
 }
 
@@ -737,7 +741,7 @@ int	always;
 		if (avlist2 != NULL)
 			free((void *)avlist2);
 		if (always) {		/* rebuild without sorting */
-			copystruct(&oldatrunk, &atrunk);
+			oldatrunk = atrunk;
 			atrunk.alist = NULL;
 			atrunk.kid = NULL;
 			unloadatree(&oldatrunk, avinsert);
@@ -768,14 +772,14 @@ int	always;
 			if (avlist1[i].p == NULL)
 				continue;
 			tap = avlist2[i];
-			copystruct(&tav, tap);
+			tav = *tap;
 			for (j = i; (pnext = avlist1[j].p) != tap;
 					j = avlmemi(pnext)) {
-				copystruct(avlist2[j], pnext);
+				*(avlist2[j]) = *pnext;
 				avinsert(avlist2[j]);
 				avlist1[j].p = NULL;
 			}
-			copystruct(avlist2[j], &tav);
+			*(avlist2[j]) = tav;
 			avinsert(avlist2[j]);
 			avlist1[j].p = NULL;
 		}
@@ -827,7 +831,7 @@ ambsync()			/* synchronize ambient file */
 				/* see if file has grown */
 	if ((flen = lseek(fileno(ambfp), (off_t)0L, 2)) < 0)
 		goto seekerr;
-	if (n = flen - lastpos) {		/* file has grown */
+	if ( (n = flen - lastpos) ) {		/* file has grown */
 		if (ambinp == NULL) {		/* use duplicate filedes */
 			ambinp = fdopen(dup(fileno(ambfp)), "r");
 			if (ambinp == NULL)