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Functions | |
| UNIV_INLINE ulint | ut_min (ulint n1, ulint n2) |
| UNIV_INLINE ulint | ut_max (ulint n1, ulint n2) |
| UNIV_INLINE void | ut_pair_min (ulint *a, ulint *b, ulint a1, ulint b1, ulint a2, ulint b2) |
| UNIV_INLINE int | ut_ulint_cmp (ulint a, ulint b) |
| UNIV_INLINE int | ut_pair_cmp (ulint a1, ulint a2, ulint b1, ulint b2) |
| UNIV_INLINE ulint | ut_2_log (ulint n) |
| UNIV_INLINE ulint | ut_2_exp (ulint n) |
Detailed Description
Various utilities
Created 5/30/1994 Heikki Tuuri
Function Documentation
| UNIV_INLINE ulint ut_2_exp | ( | ulint | n | ) |
Calculates 2 to power n.
- Returns
- 2 to power n
- Parameters
-
n in: number
| UNIV_INLINE ulint ut_2_log | ( | ulint | n | ) |
Calculates fast the 2-logarithm of a number, rounded upward to an integer.
- Returns
- logarithm in the base 2, rounded upward
- Parameters
-
n in: number != 0
| UNIV_INLINE ulint ut_max | ( | ulint | n1, |
| ulint | n2 | ||
| ) |
Calculates the maximum of two ulints.
- Returns
- maximum
- Parameters
-
n1 in: first number n2 in: second number
| UNIV_INLINE ulint ut_min | ( | ulint | n1, |
| ulint | n2 | ||
| ) |
Calculates the minimum of two ulints.
- Returns
- minimum
- Parameters
-
n1 in: first number n2 in: second number
| UNIV_INLINE int ut_pair_cmp | ( | ulint | a1, |
| ulint | a2, | ||
| ulint | b1, | ||
| ulint | b2 | ||
| ) |
Compares two pairs of ulints.
- Returns
- -1 if a < b, 0 if a == b, 1 if a > b
- Parameters
-
a1 in: more significant part of first pair a2 in: less significant part of first pair b1 in: more significant part of second pair b2 in: less significant part of second pair
| UNIV_INLINE void ut_pair_min | ( | ulint * | a, |
| ulint * | b, | ||
| ulint | a1, | ||
| ulint | b1, | ||
| ulint | a2, | ||
| ulint | b2 | ||
| ) |
Calculates minimum of two ulint-pairs.
- Parameters
-
a out: more significant part of minimum b out: less significant part of minimum a1 in: more significant part of first pair b1 in: less significant part of first pair a2 in: more significant part of second pair b2 in: less significant part of second pair
| UNIV_INLINE int ut_ulint_cmp | ( | ulint | a, |
| ulint | b | ||
| ) |
Compares two ulints.
- Returns
- 1 if a > b, 0 if a == b, -1 if a < b
- Parameters
-
a in: ulint b in: ulint
