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40 lines
936 B
40 lines
936 B
#define MIN(a, b) ({ \
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__typeof__ (a) _a = (a); \
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__typeof__ (b) _b = (b); \
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(_a < _b) ? _a : _b; \
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})
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#define MAX(a, b) ({ \
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__typeof__ (a) _a = (a); \
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__typeof__ (b) _b = (b); \
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(_a > _b) ? _a : _b; \
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})
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#define CLAMP(x, low, high) ({ \
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__typeof__(x) __x = (x); \
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__typeof__(low) __low = (low);\
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__typeof__(high) __high = (high);\
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(__x > __high) ? __high : ((__x < __low) ? __low : __x); \
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})
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#define ABS(a) ({ \
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__typeof__ (a) _a = (a); \
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(_a > 0) ? _a : (-_a); \
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})
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#ifndef NULL
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#define NULL ((void*)0)
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#endif
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// STM32 HAL defines this
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#ifndef UNUSED
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#define UNUSED(x) ((void)(x))
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#endif
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#define COMPILE_TIME_ASSERT(pred) ((void)sizeof(char[1 - (2 * ((int)(!(pred))))]))
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// compute the time elapsed (in microseconds) from 2 counter samples
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// case where ts < ts_last is ok: overflow is properly re-casted into uint32_t
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uint32_t get_ts_elapsed(uint32_t ts, uint32_t ts_last) {
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return ts - ts_last;
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}
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