#define BITS_PER_LONG (sizeof(unsigned long) * 8)
+/*
+ * We use an unsigned long to get alignment, but wrap it in a
+ * structure for type checking
+ */
+typedef struct {
+ unsigned long l;
+} bitmap;
+
#define BYTE(_bm, _n) (((unsigned char *)(_bm))[(_n) / 8])
#define LONG(_bm, _n) (((unsigned long *)(_bm))[(_n) / BITS_PER_LONG])
#define BIT(_n) (0x80 >> ((_n) % 8))
#define BYTES(_nbits) ((_nbits) / 8)
#define BITS(_nbits) ((~(0xff >> ((_nbits) % 8))) & 0xff)
-static inline void bitmap_set_bit(void *bitmap, int n)
+static inline void bitmap_set_bit(bitmap *bitmap, int n)
{
BYTE(bitmap, n) |= BIT(n);
}
-static inline void bitmap_clear_bit(void *bitmap, int n)
+static inline void bitmap_clear_bit(bitmap *bitmap, int n)
{
BYTE(bitmap, n) &= ~BIT(n);
}
-static inline void bitmap_change_bit(void *bitmap, int n)
+static inline void bitmap_change_bit(bitmap *bitmap, int n)
{
BYTE(bitmap, n) ^= BIT(n);
}
-static inline bool bitmap_test_bit(void *bitmap, int n)
+static inline bool bitmap_test_bit(bitmap *bitmap, int n)
{
return !!(BYTE(bitmap, n) & BIT(n));
}
-static inline void bitmap_zero(void *bitmap, int nbits)
+static inline void bitmap_zero(bitmap *bitmap, int nbits)
{
memset(bitmap, 0, BYTES(nbits));
if (BITS(nbits))
BYTE(bitmap, nbits) &= ~BITS(nbits);
}
-static inline void bitmap_fill(void *bitmap, int nbits)
+static inline void bitmap_fill(bitmap *bitmap, int nbits)
{
memset(bitmap, 0xff, BYTES(nbits));
if (BITS(nbits))
BYTE(bitmap, nbits) |= BITS(nbits);
}
-static inline void bitmap_copy(void *dst, void *src, int nbits)
+static inline void bitmap_copy(bitmap *dst, bitmap *src, int nbits)
{
memcpy(dst, src, BYTES(nbits));
if (BITS(nbits)) {
}
#define DEF_BINOP(_name, _op) \
- static inline void bitmap_##_name(void *dst, void *src1, void *src2, \
+ static inline void bitmap_##_name(bitmap *dst, bitmap *src1, bitmap *src2, \
int nbits) \
{ \
int n = 0; \
#undef DEF_BINOP
-static inline void bitmap_complement(void *dst, void *src, int nbits)
+static inline void bitmap_complement(bitmap *dst, bitmap *src, int nbits)
{
int n = 0;
}
}
-static inline bool bitmap_equal(void *src1, void *src2, int nbits)
+static inline bool bitmap_equal(bitmap *src1, bitmap *src2, int nbits)
{
if (memcmp(src1, src2, BYTES(nbits)) != 0)
return false;
return true;
}
-static inline bool bitmap_intersects(void *src1, void *src2, int nbits)
+static inline bool bitmap_intersects(bitmap *src1, bitmap *src2, int nbits)
{
int n = 0;
return false;
}
-static inline bool bitmap_subset(void *src1, void *src2, int nbits)
+static inline bool bitmap_subset(bitmap *src1, bitmap *src2, int nbits)
{
int n = 0;
return true;
}
-static inline bool bitmap_full(void *bitmap, int nbits)
+static inline bool bitmap_full(bitmap *bitmap, int nbits)
{
int n = 0;
return true;
}
-static inline bool bitmap_empty(void *bitmap, int nbits)
+static inline bool bitmap_empty(bitmap *bitmap, int nbits)
{
int n = 0;
}
-static inline void *bitmap_alloc(int nbits)
+static inline bitmap *bitmap_alloc(int nbits)
{
return malloc((nbits + 7) / 8);
}