Add a distinct error for division by zero

Author: Daniel-Cortez

source/compiler/sc3.c

@@ -644,7 +644,7 @@ static cell flooreddiv(cell a,cell b,int return_remainder)
   cell q,r;
 
   if (b==0) {
-    error(29);
+    error(94);  /* division by zero */
     return 0;
   } /* if */
   /* first implement truncated division in a portable way */

source/compiler/sc5.c

@@ -132,7 +132,8 @@ static char *errmsg[] = {
 /*090*/  "public functions may not return arrays (symbol \"%s\")\n",
 /*091*/  "ambiguous constant; tag override is required (symbol \"%s\")\n",
 /*092*/  "functions may not return arrays of unknown size (symbol \"%s\")\n",
-/*093*/  "\"__addressof\" operator is invalid in preprocessor expressions\n"
+/*093*/  "\"__addressof\" operator is invalid in preprocessor expressions\n",
+/*094*/  "division by zero\n"
 };
 
 static char *fatalmsg[] = {