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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
#ifndef _LINUX_HELPER_MACROS_H_
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#define _LINUX_HELPER_MACROS_H_
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#define __find_closest(x, a, as, op) \
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({ \
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typeof(as) __fc_i, __fc_as = (as) - 1; \
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typeof(x) __fc_x = (x); \
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typeof(*a) const *__fc_a = (a); \
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for (__fc_i = 0; __fc_i < __fc_as; __fc_i++) { \
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if (__fc_x op DIV_ROUND_CLOSEST(__fc_a[__fc_i] + \
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__fc_a[__fc_i + 1], 2)) \
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break; \
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} \
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(__fc_i); \
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})
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/**
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* find_closest - locate the closest element in a sorted array
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* @x: The reference value.
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* @a: The array in which to look for the closest element. Must be sorted
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* in ascending order.
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* @as: Size of 'a'.
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*
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* Returns the index of the element closest to 'x'.
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*/
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#define find_closest(x, a, as) __find_closest(x, a, as, <=)
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/**
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* find_closest_descending - locate the closest element in a sorted array
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* @x: The reference value.
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* @a: The array in which to look for the closest element. Must be sorted
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* in descending order.
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* @as: Size of 'a'.
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*
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* Similar to find_closest() but 'a' is expected to be sorted in descending
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* order.
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*/
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#define find_closest_descending(x, a, as) __find_closest(x, a, as, >=)
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#endif
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