143   PTR newmem;  in xmalloc()  local
147   newmem = malloc (size);  in xmalloc()
148   if (!newmem)  in xmalloc()
151   return (newmem);  in xmalloc()
157   PTR newmem;  in xcalloc()  local
162   newmem = calloc (nelem, elsize);  in xcalloc()
163   if (!newmem)  in xcalloc()
166   return (newmem);  in xcalloc()
172   PTR newmem;  in xrealloc()  local
177     newmem = malloc (size);  in xrealloc()
179     newmem = realloc (oldmem, size);  in xrealloc()
180   if (!newmem)  in xrealloc()
183   return (newmem);  in xrealloc()