20 lines
429 B
C
20 lines
429 B
C
#ifndef _TIMERHELPER_H_
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#define _TIMERHELPER_H_
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#include <sys/time.h>
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#ifndef __always_inline
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#define __always_inline
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#endif
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__always_inline struct timespec timespec_sub(struct timespec a,struct timespec b){
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struct timespec ret;
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ret.tv_sec = a.tv_sec - b.tv_sec;
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ret.tv_nsec = a.tv_nsec - b.tv_nsec;
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if (ret.tv_nsec < 0){
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ret.tv_sec--;
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ret.tv_nsec += 1000000000L;
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}
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return ret;
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}
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#endif |