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added MIO_BITSOF(x)

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hyung-hwan 2019-09-26 05:43:04 +00:00
parent 29195437a7
commit 2c4e247c98
1 changed files with 6 additions and 5 deletions
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11
mio/lib/mio-cmn.h
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@ -522,6 +522,7 @@ struct mio_ntime_t
#define MIO_SIZEOF(x) (sizeof(x)) #define MIO_SIZEOF(x) (sizeof(x))
#define MIO_COUNTOF(x) (sizeof(x) / sizeof(x[0])) #define MIO_COUNTOF(x) (sizeof(x) / sizeof(x[0]))
#define MIO_BITSOF(x) (sizeof(x) * MIO_BITS_PER_BYTE)
/** /**
* The MIO_OFFSETOF() macro returns the offset of a field from the beginning * The MIO_OFFSETOF() macro returns the offset of a field from the beginning
@ -548,11 +549,11 @@ struct mio_ntime_t
/* make a bit mask that can mask off low n bits */ /* make a bit mask that can mask off low n bits */
#define MIO_LBMASK(type,n) (~(~((type)0) << (n))) #define MIO_LBMASK(type,n) (~(~((type)0) << (n)))
#define MIO_LBMASK_SAFE(type,n) (((n) < MIO_SIZEOF(type) * MIO_BITS_PER_BYTE)? MIO_LBMASK(type,n): ~(type)0) #define MIO_LBMASK_SAFE(type,n) (((n) < MIO_BITSOF(type))? MIO_LBMASK(type,n): ~(type)0)
/* make a bit mask that can mask off hig n bits */ /* make a bit mask that can mask off hig n bits */
#define MIO_HBMASK(type,n) (~(~((type)0) >> (n))) #define MIO_HBMASK(type,n) (~(~((type)0) >> (n)))
#define MIO_HBMASK_SAFE(type,n) (((n) < MIO_SIZEOF(type) * MIO_BITS_PER_BYTE)? MIO_HBMASK(type,n): ~(type)0) #define MIO_HBMASK_SAFE(type,n) (((n) < MIO_BITSOF(type))? MIO_HBMASK(type,n): ~(type)0)
/* get 'length' bits starting from the bit at the 'offset' */ /* get 'length' bits starting from the bit at the 'offset' */
#define MIO_GETBITS(type,value,offset,length) \ #define MIO_GETBITS(type,value,offset,length) \
@ -579,7 +580,7 @@ struct mio_ntime_t
* \endcode * \endcode
*/ */
/*#define MIO_BITS_MAX(type,nbits) ((((type)1) << (nbits)) - 1)*/ /*#define MIO_BITS_MAX(type,nbits) ((((type)1) << (nbits)) - 1)*/
#define MIO_BITS_MAX(type,nbits) ((~(type)0) >> (MIO_SIZEOF(type) * MIO_BITS_PER_BYTE - (nbits))) #define MIO_BITS_MAX(type,nbits) ((~(type)0) >> (MIO_BITSOF(type) - (nbits)))
/* ========================================================================= /* =========================================================================
* MMGR * MMGR
@ -726,11 +727,11 @@ struct mio_cmgr_t
#define MIO_TYPE_IS_UNSIGNED(type) (((type)0) < ((type)-1)) #define MIO_TYPE_IS_UNSIGNED(type) (((type)0) < ((type)-1))
#define MIO_TYPE_SIGNED_MAX(type) \ #define MIO_TYPE_SIGNED_MAX(type) \
((type)~((type)1 << ((type)MIO_SIZEOF(type) * MIO_BITS_PER_BYTE - 1))) ((type)~((type)1 << ((type)MIO_BITSOF(type) - 1)))
#define MIO_TYPE_UNSIGNED_MAX(type) ((type)(~(type)0)) #define MIO_TYPE_UNSIGNED_MAX(type) ((type)(~(type)0))
#define MIO_TYPE_SIGNED_MIN(type) \ #define MIO_TYPE_SIGNED_MIN(type) \
((type)((type)1 << ((type)MIO_SIZEOF(type) * MIO_BITS_PER_BYTE - 1))) ((type)((type)1 << ((type)MIO_BITSOF(type) - 1)))
#define MIO_TYPE_UNSIGNED_MIN(type) ((type)0) #define MIO_TYPE_UNSIGNED_MIN(type) ((type)0)
#define MIO_TYPE_MAX(type) \ #define MIO_TYPE_MAX(type) \