mirror of
https://gitee.com/acl-dev/acl.git
synced 2024-12-01 03:17:37 +08:00
29 lines
493 B
C
29 lines
493 B
C
#ifndef __STAMP_INCLUDE_H__
|
|
#define __STAMP_INCLUDE_H__
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
static double stamp_sub(const struct timeval *from, const struct timeval *sub)
|
|
{
|
|
struct timeval res;
|
|
|
|
memcpy(&res, from, sizeof(struct timeval));
|
|
|
|
res.tv_usec -= sub->tv_usec;
|
|
if (res.tv_usec < 0) {
|
|
--res.tv_sec;
|
|
res.tv_usec += 1000000;
|
|
}
|
|
res.tv_sec -= sub->tv_sec;
|
|
|
|
return (res.tv_sec * 1000.0 + res.tv_usec/1000.0);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|