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-rw-r--r--components/libc/compilers/common/time.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 8deccbba2c..63b4746618 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -307,6 +307,14 @@ char* ctime(const time_t *tim_p)
}
RTM_EXPORT(ctime);
+double difftime(time_t time1, time_t time2)
+{
+ return (double)(time1 - time2);
+}
+RTM_EXPORT(difftime);
+
+RTM_EXPORT(strftime); /* inherent in the toolchain */
+
/**
* Returns the current time.
*
@@ -486,10 +494,6 @@ int settimeofday(const struct timeval *tv, const struct timezone *tz)
}
RTM_EXPORT(settimeofday);
-/* inherent in the toolchain */
-RTM_EXPORT(difftime);
-RTM_EXPORT(strftime);
-
#ifdef RT_USING_POSIX_DELAY
int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
{