The Open Group Base Specifications Issue 7
IEEE Std 1003.1-2008, 2016 Edition
Copyright © 2016 The IEEE and The Open Group, All Rights reserved.

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### I

- iconv - codeset conversion
- iconv() - codeset conversion function
- iconv.h - codeset conversion facility
- iconv_close() - codeset conversion deallocation function
- iconv_open() - codeset conversion allocation function
- id - return user identity
- if_freenameindex() - free memory allocated by if_nameindex
- if_indextoname() - map a network interface index to its corresponding name
- if_nameindex() - return all network interface names and indexes
- if_nametoindex() - map a network interface name to its corresponding index
- ilogb(), ilogbf, ilogbl - return an unbiased exponent
- ilogbf(), ilogb, ilogbl - return an unbiased exponent
- ilogbl(), ilogb, ilogbf - return an unbiased exponent
- imaxabs() - return absolute value
- imaxdiv() - return quotient and remainder
- inet_addr(), inet_ntoa - IPv4 address manipulation
- inet_ntoa(), inet_addr - IPv4 address manipulation
- inet_ntop(), inet_pton - convert IPv4 and IPv6 addresses between binary and text form
- inet_pton(), inet_ntop - convert IPv4 and IPv6 addresses between binary and text form
- initstate(), random, setstate, srandom - pseudo-random number functions
- insque(), remque - insert or remove an element in a queue
- inttypes.h - fixed size integer types
- ioctl() - control a STREAMS device (STREAMS)
- ipcrm - remove an XSI message queue, semaphore set, or shared memory segment identifier
- ipcs - report XSI interprocess communication facilities status
- isalnum(), isalnum_l - test for an alphanumeric character
- isalnum_l(), isalnum - test for an alphanumeric character
- isalpha(), isalpha_l - test for an alphabetic character
- isalpha_l(), isalpha - test for an alphabetic character
- isascii() - test for a 7-bit US-ASCII character
- isastream() - test a file descriptor (STREAMS)
- isatty() - test for a terminal device
- isblank(), isblank_l - test for a blank character
- isblank_l(), isblank - test for a blank character
- iscntrl(), iscntrl_l - test for a control character
- iscntrl_l(), iscntrl - test for a control character
- isdigit(), isdigit_l - test for a decimal digit
- isdigit_l(), isdigit - test for a decimal digit
- isfinite() - test for finite value
- isgraph(), isgraph_l - test for a visible character
- isgraph_l(), isgraph - test for a visible character
- isgreater() - test if x greater than y
- isgreaterequal() - test if x is greater than or equal to y
- isinf() - test for infinity
- isless() - test if x is less than y
- islessequal() - test if x is less than or equal to y
- islessgreater() - test if x is less than or greater than y
- islower(), islower_l - test for a lowercase letter
- islower_l(), islower - test for a lowercase letter
- isnan() - test for a NaN
- isnormal() - test for a normal value
- iso646.h - alternative spellings
- isprint(), isprint_l - test for a printable character
- isprint_l(), isprint - test for a printable character
- ispunct(), ispunct_l - test for a punctuation character
- ispunct_l(), ispunct - test for a punctuation character
- isspace(), isspace_l - test for a white-space character
- isspace_l(), isspace - test for a white-space character
- isunordered() - test if arguments are unordered
- isupper(), isupper_l - test for an uppercase letter
- isupper_l(), isupper - test for an uppercase letter
- iswalnum(), iswalnum_l - test for an alphanumeric wide-character code
- iswalnum_l(), iswalnum - test for an alphanumeric wide-character code
- iswalpha(), iswalpha_l - test for an alphabetic wide-character code
- iswalpha_l(), iswalpha - test for an alphabetic wide-character code
- iswblank(), iswblank_l - test for a blank wide-character code
- iswblank_l(), iswblank - test for a blank wide-character code
- iswcntrl(), iswcntrl_l - test for a control wide-character code
- iswcntrl_l(), iswcntrl - test for a control wide-character code
- iswctype(), iswctype_l - test character for a specified class
- iswctype_l(), iswctype - test character for a specified class
- iswdigit(), iswdigit_l - test for a decimal digit wide-character code
- iswdigit_l(), iswdigit - test for a decimal digit wide-character code
- iswgraph(), iswgraph_l - test for a visible wide-character code
- iswgraph_l(), iswgraph - test for a visible wide-character code
- iswlower(), iswlower_l - test for a lowercase letter wide-character code
- iswlower_l(), iswlower - test for a lowercase letter wide-character code
- iswprint(), iswprint_l - test for a printable wide-character code
- iswprint_l(), iswprint - test for a printable wide-character code
- iswpunct(), iswpunct_l - test for a punctuation wide-character code
- iswpunct_l(), iswpunct - test for a punctuation wide-character code
- iswspace(), iswspace_l - test for a white-space wide-character code
- iswspace_l(), iswspace - test for a white-space wide-character code
- iswupper(), iswupper_l - test for an uppercase letter wide-character code
- iswupper_l(), iswupper - test for an uppercase letter wide-character code
- iswxdigit(), iswxdigit_l - test for a hexadecimal digit wide-character code
- iswxdigit_l(), iswxdigit - test for a hexadecimal digit wide-character code
- isxdigit(), isxdigit_l - test for a hexadecimal digit
- isxdigit_l(), isxdigit - test for a hexadecimal digit

Topics

- Implementation Conformance
- Incomplete Line
- Inf
- Instrumented Application
- Interactive Shell
- Interface Characteristics
- Internationalization Variables
- Internationalization
- Interprocess Communication
- Invoke