f...

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

• fabs, fabsf, fabsl - compute absolute value of floating-point number
• faccessat - check access permissions for file
• fattach - assign file descriptor under STREAMS to object in name space of file system
• fchdir - change current directory
• fchmod - change mode of file
• fchmodat - change mode of file
• fchown - change owner or group of file
• fchownat - change owner and group of file
• fclose - close stream
• fcntl - control open file
• fcvt - convert floating-point number to string
• FD_CLR, FD_ISSET, FD_SET, FD_ZERO - macros for synchronous I/O multiplexing
• fdelrec - delete record in ISAM file (BS2000)
• fdetach - cancel assignment to STREAMS file
• fdim, fdimf, fdiml - compute positive difference
• fdopen - associate stream with file descriptor
• fdopendir - open directory
• feof - test end-of-file indicator on stream
• ferror - test error indicator on stream
• fflush - flush stream
• ffs - seek first set bit
• fgetc - get byte from stream
• fgetpos, fgetpos64 - get current value of file position indicator in stream
• fgets - get string from stream
• fgetwc - get wide character string from stream
• fgetws - get wide character string from stream
• __FILE__ - macro for source file names
• fileno - get file descriptor
• float2ieee - Convert floating-point number from /390 format to IEEE format (BS2000)
• flocate - set file position indicator in ISAM file (BS2000)
• flockfile, ftrylockfile, funlockfile - functions for locking standard input/output
• floor, floorf, floorl- round down floating point number
• fmax, fmaxf, fmaxl - determine maximum numeric value
• fmin, fminf, fminl - determine minimum numeric value
• fmod, fmodf, fmodl - compute floating-point remainder value function
• fmtmsg - output message to stderr and/or system console
• fnmatch - match a filename string or a pathname
• fopen, fopen64 - open stream
• fork - create new process
• fpathconf - get value of pathname variable
• fpclassify - macro to classify floating-point numbers
• fprintf, printf, sprintf - write formatted output on output stream
• fputc - put byte on stream
• fputs - put string on stream
• fputwc - put wide-character code on stream
• fputws - put wide character string on stream
• fread - read binary data
• free - free allocated memory
• freopen, freopen64 - flush and reopen stream
• frexp, frexpf, frexpl - extract mantissa and exponent from double precision number
• fscanf, scanf, sscanf - read formatted input
• fseek, fseek64, fseeko, fseeko64 - reposition file position indicator in stream
• fsetpos, fsetpos64 - set file position indicator for stream to current value
• fstat, fstat64, fstatx, fstat64x, fstatat, fstatat64, fstatatx, fstatat64x - get file status of open file
• fstatvfs, fstatvfs64, statvfs, statvfs64 - read file system information
• fsync - synchronize changes to file
• ftell, ftell64, ftello, ftello64 - get current value of file position indicator for stream
• ftime, ftime64 - get date and time
• ftok - interprocess communication
• ftruncate, ftruncate64, truncate, truncate64 - set file to specified length
• ftrylockfile - lock standard input/output
• ftw, ftw64, ftwx, ftw64x - traverse (walk) file tree
• funlockfile - unlock standard input/output
• futimesat, futimesat64 - setting file access and update times
• fwide - specify file orientation
• fwprintf, swprintf, vfwprintf, vswprintf, vwprintf, wprintf - output formatted wide characters
• fwrite - output binary data
• fwscanf, swscanf, wscanf - formatted read