...t_ntoa() l64a() lgamma() lgammaf() lgammal() localeconv() localtime() lrand48() mrand48() nftw() nl_langinfo() ptsname() putc_unlocked() putchar_unlocked() putenv() pututxline()…...eason to mark so-marked functions as MT-Unsafe, but when this behavior is optional (e.g., nftw (3) with FTW_CHDIR ), avoiding the option may be a good alternative to using full …