Imported Upstream version 0.6.35

[platform/upstream/libsolv.git] / src / bitmap.c

diff --git a/src/bitmap.c b/src/bitmap.c
index 200bb41..4e8adbd 100644 (file)
--- a/src/bitmap.c
+++ b/src/bitmap.c
@@ -7,7 +7,7 @@
 
 /*
  * bitmap.c
- * 
+ *
  */
 
 #include <stdlib.h>
@@ -16,28 +16,95 @@
 #include "bitmap.h"
 #include "util.h"
 
+/* constructor */
 void
 map_init(Map *m, int n)
 {
   m->size = (n + 7) >> 3;
-  m->map = n ? sat_calloc(m->size, 1) : 0;
+  m->map = m->size ? solv_calloc(m->size, 1) : 0;
 }
 
-// free space allocated
+/* destructor */
 void
 map_free(Map *m)
 {
-  m->map = sat_free(m->map);
+  m->map = solv_free(m->map);
   m->size = 0;
 }
 
-// copy t <- s
+/* copy constructor target <- source */
+void
+map_init_clone(Map *target, const Map *source)
+{
+  target->size = source->size;
+  if (source->size)
+    {
+      target->map = solv_malloc(source->size);
+      memcpy(target->map, source->map, source->size);
+    }
+  else
+    target->map = 0;
+}
+
+/* grow a map */
+void
+map_grow(Map *m, int n)
+{
+  n = (n + 7) >> 3;
+  if (m->size < n)
+    {
+      m->map = solv_realloc(m->map, n);
+      memset(m->map + m->size, 0, n - m->size);
+      m->size = n;
+    }
+}
+
+/* bitwise-ands maps t and s, stores the result in t. */
+void
+map_and(Map *t, const Map *s)
+{
+  unsigned char *ti, *si, *end;
+  ti = t->map;
+  si = s->map;
+  end = ti + (t->size < s->size ? t->size : s->size);
+  while (ti < end)
+    *ti++ &= *si++;
+}
+
+/* bitwise-ors maps t and s, stores the result in t. */
+void
+map_or(Map *t, const Map *s)
+{
+  unsigned char *ti, *si, *end;
+  if (t->size < s->size)
+    map_grow(t, s->size << 3);
+  ti = t->map;
+  si = s->map;
+  end = ti + (t->size < s->size ? t->size : s->size);
+  while (ti < end)
+    *ti++ |= *si++;
+}
+
+/* remove all set bits in s from t. */
+void
+map_subtract(Map *t, const Map *s)
+{
+  unsigned char *ti, *si, *end;
+  ti = t->map;
+  si = s->map;
+  end = ti + (t->size < s->size ? t->size : s->size);
+  while (ti < end)
+    *ti++ &= ~*si++;
+}
+
 void
-map_init_clone(Map *t, Map *s)
+map_invertall(Map *m)
 {
-  t->size = s->size;
-  t->map = sat_malloc(s->size);
-  memcpy(t->map, s->map, t->size);
+  unsigned char *ti, *end;
+  ti = m->map;
+  end = ti + m->size;
+  while (ti < end)
+    *ti++ ^= 0xff;
 }
 
-// EOF
+/* EOF */