- tdestroy
- telldir
- tempnam
- termios
- tfind
- tgamma
- tgammaf
- tgammal
- timegm
- timelocal
- timeradd
- timerclear
- timercmp
- timerisset
- timersub
- timezone
- tmpfile
- tmpnam
- tmpnam_r
- toascii
- tolower
- tolower_l
- toupper
- toupper_l
- towctrans
- towlower
- towlower_l
- towupper
- towupper_l
- trunc
- truncf
- truncl
- tsearch
- ttyname
- ttyname_r
- ttyslot
- twalk
- tzname
- tzset
- ualarm
- UILib intro
- ulimit
- ungetc
- ungetwc
- unlockpt
- updwtmp
- usleep
- utmpname
- uuid
- uuid_clear
- uuid_compare
- uuid_copy
- uuid_generate
- uuid_generate_random
- uuid_generate_time
- uuid_is_null
- uuid_parse
- uuid_time
- uuid_unparse
- valloc
- vasprintf
- va_arg
- va_copy
- va_end
- va_start
- vdprintf
- verr
- verrx
- versionsort
- vfscanf
MAN (3)
Library functions, covering in particular the C standard library