/** \file
Bitmaps built as vectors of machine words
-*/
+*/
#include <vppinfra/vec.h>
#include <vppinfra/random.h>
}
/** Sets the ith bit of a bitmap to new_value.
- No sanity checking. Be careful.
+ No sanity checking. Be careful.
@param a - pointer to the bitmap
@param i - the bit position to interrogate
@param new_value - new value for the bit
ai = a[i0];
old_value = (ai & bit) != 0;
- ai &= ~ bit;
+ ai &= ~bit;
ai |= ((uword) (new_value != 0)) << i1;
a[i0] = ai;
return old_value;
if (i1 + n_bits > BITS (bitmap[0]) && i0 < l)
{
n_bits -= BITS (bitmap[0]) - i1;
- result |= (bitmap[i0] & (((uword) 1 << n_bits) - 1)) << (BITS (bitmap[0]) - i1);
+ result |=
+ (bitmap[i0] & (((uword) 1 << n_bits) - 1)) << (BITS (bitmap[0]) - i1);
}
return result;
@param ai - pointer to the bitmap
@returns lowest numbered set bit, or ~0 if the entire bitmap is zero
*/
-always_inline uword clib_bitmap_first_set (uword * ai)
+always_inline uword
+clib_bitmap_first_set (uword * ai)
{
uword i;
for (i = 0; i < vec_len (ai); i++)
@param ai - pointer to the bitmap
@returns lowest numbered set bit, or ~0 if the entire bitmap is zero
*/
-always_inline uword clib_bitmap_last_set (uword * ai)
+always_inline uword
+clib_bitmap_last_set (uword * ai)
{
uword i;
- for (i = vec_len (ai); i > 0 ; i--)
+ for (i = vec_len (ai); i > 0; i--)
{
uword x = ai[i - 1];
if (x != 0)
@param bi - pointer to the source bitmap
@returns ai = ai and bi. ai is modified, bi is not modified
*/
-always_inline uword *
-clib_bitmap_and (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_and (uword * ai, uword * bi);
/** Logical operator across two bitmaps
@param bi - pointer to the source bitmap
@returns ai = ai & ~bi. ai is modified, bi is not modified
*/
-always_inline uword *
-clib_bitmap_andnot (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_andnot (uword * ai, uword * bi);
/** Logical operator across two bitmaps
@param bi - pointer to the source bitmap
@returns ai = ai & ~bi. ai is modified, bi is not modified
*/
-always_inline uword *
-clib_bitmap_or (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_or (uword * ai, uword * bi);
/** Logical operator across two bitmaps
@param ai - pointer to the destination bitmap
@param bi - pointer to the source bitmap
@returns ai = ai or bi. ai is modified, bi is not modified
*/
-always_inline uword *
-clib_bitmap_or (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_or (uword * ai, uword * bi);
/** Logical operator across two bitmaps
@param bi - pointer to the source bitmap
@returns ai = ai xor bi. ai is modified, bi is not modified
*/
-always_inline uword *
-clib_bitmap_xor (uword * ai, uword * bi);
+always_inline uword *clib_bitmap_xor (uword * ai, uword * bi);
/* ALU function definition macro for functions taking two bitmaps. */
#define _(name, body, check_zero) \
}
/* ALU functions: */
-_ (and, a = a & b, 1)
-_ (andnot, a = a &~ b, 1)
-_ (or, a = a | b, 0)
-_ (xor, a = a ^ b, 1)
+_(and, a = a & b, 1)
+_(andnot, a = a & ~b, 1) _(or, a = a | b, 0) _(xor, a = a ^ b, 1)
#undef _
-
/** Logical operator across two bitmaps which duplicates the first bitmap
@param ai - pointer to the destination bitmap
@param bi - pointer to the source bitmap
@returns aiDup = ai and bi. Neither ai nor bi are modified
*/
-always_inline uword *
-clib_bitmap_dup_and (uword * ai, uword * bi);
+ always_inline uword *
+ clib_bitmap_dup_and (uword * ai, uword * bi);
/** Logical operator across two bitmaps which duplicates the first bitmap
@param bi - pointer to the source bitmap
@returns aiDup = ai & ~bi. Neither ai nor bi are modified
*/
-always_inline uword *
-clib_bitmap_dup_andnot (uword * ai, uword * bi);
+ always_inline uword *
+ clib_bitmap_dup_andnot (uword * ai, uword * bi);
/** Logical operator across two bitmaps which duplicates the first bitmap
@param bi - pointer to the source bitmap
@returns aiDup = ai or bi. Neither ai nor bi are modified
*/
-always_inline uword *
-clib_bitmap_dup_or (uword * ai, uword * bi);
+ always_inline uword *
+ clib_bitmap_dup_or (uword * ai, uword * bi);
/** Logical operator across two bitmaps which duplicates the first bitmap
@param bi - pointer to the source bitmap
@returns aiDup = ai xor bi. Neither ai nor bi are modified
*/
-always_inline uword *
-clib_bitmap_dup_xor (uword * ai, uword * bi);
+ always_inline uword *
+ clib_bitmap_dup_xor (uword * ai, uword * bi);
#define _(name) \
always_inline uword * \
clib_bitmap_dup_##name (uword * ai, uword * bi) \
{ return clib_bitmap_##name (clib_bitmap_dup (ai), bi); }
-_ (and);
-_ (andnot);
-_ (or);
-_ (xor);
+_(and);
+_(andnot);
+_(or);
+_(xor);
#undef _
}
/* ALU functions immediate: */
-_ (andi, a = a & b, 1)
-_ (andnoti, a = a &~ b, 1)
-_ (ori, a = a | b, 0)
-_ (xori, a = a ^ b, 1)
-
+_(andi, a = a & b, 1)
+_(andnoti, a = a & ~b, 1) _(ori, a = a | b, 0) _(xori, a = a ^ b, 1)
#undef _
-
/** Return a random bitmap of the requested length
@param ai - pointer to the destination bitmap
@param n_bits - number of bits to allocate
@param [in/out] seed - pointer to the random number seed
@returns a reasonably random bitmap based. See random.h.
*/
-always_inline uword *
-clib_bitmap_random (uword * ai, uword n_bits, u32 * seed)
+ always_inline uword *
+ clib_bitmap_random (uword * ai, uword n_bits, u32 * seed)
{
vec_reset_length (ai);
/** Return the next set bit in a bitmap starting at bit i
@param ai - pointer to the bitmap
@param i - first bit position to test
- @returns first set bit position at or after i,
+ @returns first set bit position at or after i,
~0 if no further set bits are found
*/
always_inline uword
uword i0 = i / BITS (ai[0]);
uword i1 = i % BITS (ai[0]);
uword t;
-
+
if (i0 < vec_len (ai))
{
t = (ai[i0] >> i1) << i1;
uword i0 = i / BITS (ai[0]);
uword i1 = i % BITS (ai[0]);
uword t;
-
+
if (i0 < vec_len (ai))
{
t = (~ai[i0] >> i1) << i1;
for (i0++; i0 < vec_len (ai); i0++)
{
- t = ~ai[i0];
+ t = ~ai[i0];
if (t)
return log2_first_set (t) + i0 * BITS (ai[0]);
}
return i;
}
-/** unformat a list of bit ranges into a bitmap (eg "0-3,5-7,11" )
+/** unformat a list of bit ranges into a bitmap (eg "0-3,5-7,11" )
uword * bitmap;
rv = unformat ("%U", unformat_bitmap_list, &bitmap);
Standard unformat_function_t arguments
- @param input - pointer an unformat_input_t
+ @param input - pointer an unformat_input_t
@param va - varargs list comprising a single uword **
@returns 1 on success, 0 on failure
*/
static inline uword
-unformat_bitmap_list(unformat_input_t * input, va_list * va)
+unformat_bitmap_list (unformat_input_t * input, va_list * va)
{
- uword ** bitmap_return = va_arg (* va, uword **);
- uword * bitmap = 0;
+ uword **bitmap_return = va_arg (*va, uword **);
+ uword *bitmap = 0;
- u32 a,b;
+ u32 a, b;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
int i;
if (unformat (input, "%u-%u,", &a, &b))
- ;
+ ;
else if (unformat (input, "%u,", &a))
- b = a;
+ b = a;
else if (unformat (input, "%u-%u", &a, &b))
- ;
+ ;
else if (unformat (input, "%u", &a))
- b = a;
+ b = a;
else if (bitmap)
- {
- unformat_put_input(input);
+ {
+ unformat_put_input (input);
break;
}
else
- goto error;
+ goto error;
if (b < a)
- goto error;
+ goto error;
for (i = a; i <= b; i++)
- bitmap = clib_bitmap_set(bitmap, i, 1);
+ bitmap = clib_bitmap_set (bitmap, i, 1);
}
*bitmap_return = bitmap;
return 1;
error:
- clib_bitmap_free(bitmap);
+ clib_bitmap_free (bitmap);
return 0;
}
@returns string under construction
*/
static inline u8 *
-format_bitmap_hex(u8 * s, va_list * args)
+format_bitmap_hex (u8 * s, va_list * args)
{
- uword * bitmap = va_arg (*args, uword *);
+ uword *bitmap = va_arg (*args, uword *);
int i, is_trailing_zero = 1;
if (!bitmap)
- return format(s, "0");
+ return format (s, "0");
i = vec_bytes (bitmap) * 2;
while (i > 0)
{
- u8 x = clib_bitmap_get_multiple(bitmap, --i * 4, 4);
+ u8 x = clib_bitmap_get_multiple (bitmap, --i * 4, 4);
if (x && is_trailing_zero)
- is_trailing_zero = 0;
+ is_trailing_zero = 0;
if (x || !is_trailing_zero)
- s = format(s, "%x", x);
+ s = format (s, "%x", x);
}
return s;
}
#endif /* included_clib_bitmap_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff