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#ifndef LYNX_HELP_H__
#define LYNX_HELP_H__
/* Internal macros */
#define _F_START(f) (0 ? f)
#define _F_END(f) (1 ? f)
#define _F_SIZE(f) (1 + _F_END(f) - _F_START(f))
#define _F_MASK(f) (((1 << _F_SIZE(f)) - 1) << _F_START(f))
#define _F_NORMALIZE(v, f) (((v) & _F_MASK(f)) >> _F_START(f))
#define _F_DENORMALIZE(v, f) (((v) << _F_START(f)) & _F_MASK(f))
/* Global macros */
#define FIELD_GET(x, reg, field) \
( \
_F_NORMALIZE((x), reg ## _ ## field) \
)
#define FIELD_SET(x, reg, field, value) \
( \
(x & ~_F_MASK(reg ## _ ## field)) \
| _F_DENORMALIZE(reg ## _ ## field ## _ ## value, reg ## _ ## field) \
)
#define FIELD_VALUE(x, reg, field, value) \
( \
(x & ~_F_MASK(reg ## _ ## field)) \
| _F_DENORMALIZE(value, reg ## _ ## field) \
)
#define FIELD_CLEAR(reg, field) \
( \
~_F_MASK(reg ## _ ## field) \
)
/* Field Macros */
#define FIELD_START(field) (0 ? field)
#define FIELD_END(field) (1 ? field)
#define FIELD_SIZE(field) (1 + FIELD_END(field) - FIELD_START(field))
#define FIELD_MASK(field) (((1 << (FIELD_SIZE(field)-1)) | ((1 << (FIELD_SIZE(field)-1)) - 1)) << FIELD_START(field))
static inline unsigned int absDiff(unsigned int a, unsigned int b)
{
if (a < b)
return b-a;
else
return a-b;
}
/* n / d + 1 / 2 = (2n + d) / 2d */
#define roundedDiv(num, denom) ((2 * (num) + (denom)) / (2 * (denom)))
#define MHz(x) ((x) * 1000000)
#endif
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