aligned_alloc at_thrd_exit constraint_handler_t ctime_s date EINVAL epoch errno errno_t gmtime_s if localtime_s p p99_abort_handler P99_CONSTRAINT_HANDLER p99_exit_handler p99_ignore_handler p99_report_handler P99_SETJMP_INLINE P99_STRERROR strerror_s strerror_s strerrorlen_s strnlen_s switch TIME_MONOTONIC TIME_UTC timespec_get v v violation

strerrorlen_s() size_t strerrorlen_s ( errno_t  p00_errnum ) inline calculates the length of the (untruncated) locale-specific message string that the strerror_s function maps to errnum.