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40 lines
693 B
C
40 lines
693 B
C
#ifndef __LIB_MATH_H__
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#define __LIB_MATH_H__
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/* Take the power */
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static inline int pow(int val, int exp)
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{
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int res = 1;
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for (int i = 0; i < exp; i++)
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res *= val;
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return res;
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}
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static inline int min(int x, int y)
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{
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return x < y ? x : y;
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}
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static inline int max(int x, int y)
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{
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return x > y ? x : y;
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}
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/* Tests if ranges a-b intersect with range c-d */
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static inline int set_intersection(unsigned long a, unsigned long b,
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unsigned long c, unsigned long d)
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{
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/*
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* Below is the complement set (') of the intersection
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* of 2 ranges, much simpler ;-)
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*/
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if (b <= c || a >= d)
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return 0;
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/* The rest is always intersecting */
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return 1;
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}
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#endif /* __LIB_MATH_H__ */
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