diff options
Diffstat (limited to 'storage/xtradb/include/ut0byte.ic')
| -rw-r--r-- | storage/xtradb/include/ut0byte.ic | 254 |
1 files changed, 8 insertions, 246 deletions
diff --git a/storage/xtradb/include/ut0byte.ic b/storage/xtradb/include/ut0byte.ic index 3dd51890cb4..e7908efa41a 100644 --- a/storage/xtradb/include/ut0byte.ic +++ b/storage/xtradb/include/ut0byte.ic @@ -24,260 +24,22 @@ Created 5/30/1994 Heikki Tuuri *******************************************************************/ /*******************************************************//** -Creates a 64-bit dulint out of two ulints. +Creates a 64-bit integer out of two 32-bit integers. @return created dulint */ UNIV_INLINE -dulint -ut_dulint_create( -/*=============*/ +ib_uint64_t +ut_ull_create( +/*==========*/ ulint high, /*!< in: high-order 32 bits */ ulint low) /*!< in: low-order 32 bits */ { - dulint res; - - ut_ad(high <= 0xFFFFFFFF); - ut_ad(low <= 0xFFFFFFFF); - - res.high = high; - res.low = low; - - return(res); -} - -/*******************************************************//** -Gets the high-order 32 bits of a dulint. -@return 32 bits in ulint */ -UNIV_INLINE -ulint -ut_dulint_get_high( -/*===============*/ - dulint d) /*!< in: dulint */ -{ - return(d.high); -} - -/*******************************************************//** -Gets the low-order 32 bits of a dulint. -@return 32 bits in ulint */ -UNIV_INLINE -ulint -ut_dulint_get_low( -/*==============*/ - dulint d) /*!< in: dulint */ -{ - return(d.low); -} - -/*******************************************************//** -Converts a dulint (a struct of 2 ulints) to ib_int64_t, which is a 64-bit -integer type. -@return value in ib_int64_t type */ -UNIV_INLINE -ib_int64_t -ut_conv_dulint_to_longlong( -/*=======================*/ - dulint d) /*!< in: dulint */ -{ - return((ib_int64_t)d.low - + (((ib_int64_t)d.high) << 32)); -} - -/*******************************************************//** -Tests if a dulint is zero. -@return TRUE if zero */ -UNIV_INLINE -ibool -ut_dulint_is_zero( -/*==============*/ - dulint a) /*!< in: dulint */ -{ - if ((a.low == 0) && (a.high == 0)) { - - return(TRUE); - } - - return(FALSE); -} - -/*******************************************************//** -Compares two dulints. -@return -1 if a < b, 0 if a == b, 1 if a > b */ -UNIV_INLINE -int -ut_dulint_cmp( -/*==========*/ - dulint a, /*!< in: dulint */ - dulint b) /*!< in: dulint */ -{ - if (a.high > b.high) { - return(1); - } else if (a.high < b.high) { - return(-1); - } else if (a.low > b.low) { - return(1); - } else if (a.low < b.low) { - return(-1); - } else { - return(0); - } -} - -/*******************************************************//** -Calculates the max of two dulints. -@return max(a, b) */ -UNIV_INLINE -dulint -ut_dulint_get_max( -/*==============*/ - dulint a, /*!< in: dulint */ - dulint b) /*!< in: dulint */ -{ - if (ut_dulint_cmp(a, b) > 0) { - - return(a); - } - - return(b); -} - -/*******************************************************//** -Calculates the min of two dulints. -@return min(a, b) */ -UNIV_INLINE -dulint -ut_dulint_get_min( -/*==============*/ - dulint a, /*!< in: dulint */ - dulint b) /*!< in: dulint */ -{ - if (ut_dulint_cmp(a, b) > 0) { - - return(b); - } - - return(a); -} - -/*******************************************************//** -Adds a ulint to a dulint. -@return sum a + b */ -UNIV_INLINE -dulint -ut_dulint_add( -/*==========*/ - dulint a, /*!< in: dulint */ - ulint b) /*!< in: ulint */ -{ - if (0xFFFFFFFFUL - b >= a.low) { - a.low += b; - - return(a); - } - - a.low = a.low - (0xFFFFFFFFUL - b) - 1; - - a.high++; - - return(a); -} - -/*******************************************************//** -Subtracts a ulint from a dulint. -@return a - b */ -UNIV_INLINE -dulint -ut_dulint_subtract( -/*===============*/ - dulint a, /*!< in: dulint */ - ulint b) /*!< in: ulint, b <= a */ -{ - if (a.low >= b) { - a.low -= b; - - return(a); - } - - b -= a.low + 1; - - a.low = 0xFFFFFFFFUL - b; - - ut_ad(a.high > 0); - - a.high--; - - return(a); -} - -/*******************************************************//** -Subtracts a dulint from another. NOTE that the difference must be positive -and smaller that 4G. -@return a - b */ -UNIV_INLINE -ulint -ut_dulint_minus( -/*============*/ - dulint a, /*!< in: dulint; NOTE a must be >= b and at most - 2 to power 32 - 1 greater */ - dulint b) /*!< in: dulint */ -{ - ulint diff; - - if (a.high == b.high) { - ut_ad(a.low >= b.low); - - return(a.low - b.low); - } - - ut_ad(a.high == b.high + 1); - - diff = (ulint)(0xFFFFFFFFUL - b.low); - diff += 1 + a.low; - - ut_ad(diff > a.low); - - return(diff); -} - -/********************************************************//** -Rounds a dulint downward to a multiple of a power of 2. -@return rounded value */ -UNIV_INLINE -dulint -ut_dulint_align_down( -/*=================*/ - dulint n, /*!< in: number to be rounded */ - ulint align_no) /*!< in: align by this number which must be a - power of 2 */ -{ - ulint low, high; - - ut_ad(align_no > 0); - ut_ad(((align_no - 1) & align_no) == 0); - - low = ut_dulint_get_low(n); - high = ut_dulint_get_high(n); - - low = low & ~(align_no - 1); - - return(ut_dulint_create(high, low)); -} - -/********************************************************//** -Rounds a dulint upward to a multiple of a power of 2. -@return rounded value */ -UNIV_INLINE -dulint -ut_dulint_align_up( -/*===============*/ - dulint n, /*!< in: number to be rounded */ - ulint align_no) /*!< in: align by this number which must be a - power of 2 */ -{ - return(ut_dulint_align_down(ut_dulint_add(n, align_no - 1), align_no)); + ut_ad(high <= ULINT32_MASK); + ut_ad(low <= ULINT32_MASK); + return(((ib_uint64_t) high) << 32 | low); } /********************************************************//** -Rounds ib_uint64_t downward to a multiple of a power of 2. +Rounds a 64-bit integer downward to a multiple of a power of 2. @return rounded value */ UNIV_INLINE ib_uint64_t |