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index(3) -- locate character in string
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The index() function returns a pointer to the first occurrence of the character c in the string s. The rindex() function returns a pointer to the last occurrence of the character c in the string s. Th... |
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inet(3) -- Internet address manipulation routines
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inet_aton() converts the Internet host address cp from the standard numbers-and-dots notation into binary data and stores it in the structure that inp points to. inet_aton returns nonzero if the addre... |
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inet_ntop(3) -- Parse network address structures
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This function converts the network address structure src in the af address family into a character string, which is copied to a character buffer dst, which is cnt bytes long. inet_ntop(3) extends the ... |
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inet_pton(3) -- Create a network address structure
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This function converts the character string src into a network address structure in the af address family, then copies the network address structure to dst. inet_pton(3) extends the inet_addr(3) funct... |
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initgroups(3) -- initialize the supplementary group access list
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The initgroups() function initializes the group access list by reading the group database /etc/group and using all groups of which user is a member. The additional group group is also added to the lis... |
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insque(3) -- insert/remove an item from a queue
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insque() and remque() are functions for manipulating queues made from doubly-linked lists. Each element in this list is of type struct qelem The qelem structure is defined as struct qelem { struct qel... |
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intro(3) -- Introduction to library functions
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This chapter describes all library functions excluding the library functions described in chapter 2, which implement system calls. There are various function groups which can be identified by a letter... |
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isalpha(3) -- character classification routines
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These functions check whether c, which must have the value of an unsigned char or EOF, falls into a certain character class according to the current locale. isalnum() checks for an alphanumeric charac... |
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isatty(3) -- does this descriptor refer to a terminal
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returns 1 if desc is an open descriptor connected to a terminal and 0 else. |
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isinf(3) -- test for infinity or not-a-number (NaN)
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The isinf() function returns -1 if value represents negative infinity, 1 if value represents positive infinity, and 0 otherwise. The isnan() function returns a non-zero value if value is "not-a-numbe... |
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iswalnum(3) -- test for alphanumeric wide character
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The iswalnum function is the wide-character equivalent of the isalnum function. It tests whether wc is a wide character belonging to the wide character class "alnum". The wide character class "alnu... |
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iswalpha(3) -- test for alphabetic wide character
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The iswalpha function is the wide-character equivalent of the isalpha function. It tests whether wc is a wide character belonging to the wide character class "alpha". The wide character class "alph... |
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iswblank(3) -- test for whitespace wide character
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The iswblank function is the wide-character equivalent of the isblank function. It tests whether wc is a wide character belonging to the wide character class "blank". The wide character class "blan... |
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iswcntrl(3) -- test for control wide character
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The iswcntrl function is the wide-character equivalent of the iscntrl function. It tests whether wc is a wide character belonging to the wide character class "cntrl". The wide character class "cntr... |
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iswctype(3) -- wide character classification
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If wc is a wide character having the character property designated by desc (or in other words: belongs to the character class designated by desc), the iswctype function returns non-zero. Otherwise it ... |
