27 lines
726 B
C
27 lines
726 B
C
#ifndef MACROS_H
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#define MACROS_H
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// Macros for bit masks
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#define BIT(b) (1<<(b))
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#define TEST(n,b) (((n)&BIT(b))!=0)
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#define SET_BIT(n,b,value) (n) ^= ((-value)^(n)) & (BIT(b))
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// Macros for maths shortcuts
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#define RADIANS(d) ((d)*M_PI/180.0)
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#define DEGREES(r) ((r)*180.0/M_PI)
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// Macros to contrain values
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#define NOLESS(v,n) do{ if (v < n) v = n; }while(0)
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#define NOMORE(v,n) do{ if (v > n) v = n; }while(0)
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// Macros to support option testing
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#define _CAT(a, ...) a ## __VA_ARGS__
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#define SWITCH_ENABLED_0 0
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#define SWITCH_ENABLED_1 1
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#define SWITCH_ENABLED_ 1
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#define ENABLED(b) _CAT(SWITCH_ENABLED_, b)
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#define DISABLED(b) (!_CAT(SWITCH_ENABLED_, b))
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#define COUNT(a) (sizeof(a)/sizeof(*a))
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#endif //__MACROS_H
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