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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

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