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This section describes the following functions, macros and external variables:

• gamma - compute logarithm of gamma function
• garbcoll - release memory space to system (BS2000)
• gcvt - convert floating-point number to string
• getc - get byte from stream
• getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked - standard I/O with explicit lock by the client
• getchar - get byte from standard input stream
• getchar_unlocked - standard input with explicit lock by the client
• getcontext, setcontext - display or modify user context
• getcwd - get pathname of current working directory
• getdate - convert time and date to user format
• getdents - convert directory entries
• getdtablesize - get size of descriptor table
• getegid - get effective group ID of process
• getenv - get value of environment variable
• geteuid - get effective user ID of process
• getgid - get real group ID of process
• getgrent - get group file entry
• getgrgid - get group file entry for group ID
• getgrgid_r - get group file entry for group ID (thread-safe)
• getgrnam - get group file entry for group name
• getgrnam_r - get group file entry for group name (thread-safe)
• getgroups - get supplementary group IDs
• gethostid - get ID of current host
• gethostname - get name of current host
• getitimer, setitimer - read or set
• getlogin - get login name
• getlogin_r - get login name (thread-safe)
• getmsg, getpmsg - get message from STREAMS file
• getopt, optarg, optind, opterr, optopt - command option parsing
• getpagesize - get current page size
• getpass - read string of characters without echo
• getpgid - get process group ID
• getpgmname - get program name (extension)
• getpgrp - get process group ID
• getpid - get process ID
• getpmsg - get message from STREAMS file
• getppid - get parent process ID
• getpriority, setpriority - get or set process priority
• getpwent - read user data from user catalog
• getpwnam - get user name
• getpwnam_r - get user name (thread-safe)
• getpwuid - get user ID
• getpwuid_r - get user ID (thread-safe)
• getrlimit, getrlimit64, setrlimit, setrlimit64 - get or set limit for resource
• getrusage, getrusage64 - get information on usage of resources
• gets - get string from standard input stream
• getsid - get process group ID
• getsubopt - get suboptions from string
• gettimeofday, gettimeofday64 - read current time of day
• gettsn - get TSN (task sequence number) (BS2000)
• getuid - get real user ID
• getutxent, getutxid, getutxline - get utmpx entry
• getw - read word from stream
• getwc - get wide character from stream
• getwchar - get wide character from standard input stream
• getwd - get pathname of current working directory
• glob, globfree - generate pathnames matching a pattern
• gmatch - global pattern matching (extension)
• gmtime, gmtime64 - convert date and time to UTC
• gmtime_r - convert date and time to UTC (thread-safe)
• grantpt - grant access to the slave pseudoterminal