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ffs(3) -- find first bit set in a word
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The ffs() function returns the position of the first bit set in the word i. The least significant bit is position 1 and the most significant position 32. |
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fgetgrent(3) -- get group file entry
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The fgetgrent() function returns a pointer to a structure containing the group information from the file stream. The first time it is called it returns the first entry; thereafter, it returns successi... |
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fgetpwent(3) -- get password file entry
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The fgetpwent() function returns a pointer to a structure containing the broken out fields of a line in the file stream. The first time it is called it returns the first entry; thereafter, it returns ... |
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fgetwc(3) -- read a wide character from a FILE stream
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The fgetwc function is the wide-character equivalent of the fgetc function. It reads a wide character from stream and returns it. If the end of stream is reached, or if ferror(stream) becomes true, it... |
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fgetws(3) -- read a wide character string from a FILE stream
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The fgetws function is the wide-character equivalent of the fgets function. It reads a string of at most n-1 wide characters into the widecharacter array pointed to by ws, and adds a terminating L'\... |
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floor(3) -- largest integral value not greater than argument
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These functions round x down to the nearest integer. |
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fmod(3) -- floating-point remainder function
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The fmod() function computes the remainder of dividing x by y. The return value is x - n * y, where n is the quotient of x / y, rounded towards zero to an integer. |
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fnmatch(3) -- match filename or pathname
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The fnmatch() function checks whether the string argument matches the pattern argument, which is a shell wildcard pattern. The flags argument modifies the behaviour; it is the bitwise OR of zero or mo... |
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fopen(3) -- stream open functions
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The fopen function opens the file whose name is the string pointed to by path and associates a stream with it. The argument mode points to a string beginning with one of the following sequences (Addit... |
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fpathconf(3) -- get configuration values for files
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fpathconf() gets a value for the configuration option name for the open file descriptor filedes. pathconf() gets a value for configuration option name for the file name path. The corresponding macros ... |
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fputwc(3) -- write a wide character to a FILE stream
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The fputwc function is the wide-character equivalent of the fputc function. It writes the wide character wc to stream. If ferror(stream) becomes true, it returns WEOF. If a wide character conversion e... |
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fputws(3) -- write a wide character string to a FILE stream
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The fputws function is the wide-character equivalent of the fputs function. It writes the wide character string starting at ws, up to but not including the terminating L'\0' character, to stream. |
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fread(3) -- binary stream input/output
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The function fread reads nmemb elements of data, each size bytes long, from the stream pointed to by stream, storing them at the location given by ptr. The function fwrite writes nmemb elements of dat... |
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frexp(3) -- convert floating-point number to fractional and integral components
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The frexp() function is used to split the number x into a normalized fraction and an exponent which is stored in exp. |
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fseek(3) -- reposition a stream
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The fseek function sets the file position indicator for the stream pointed to by stream. The new position, measured in bytes, is obtained by adding offset bytes to the position specified by whence. If... |
