| Function/Macro | #include file | ANSI/ISO | ANSI/ISO 93 | POSIX | XPG4 | Extension | Subsystem |
| fabs | <math.h> | X | X | ||||
| _facos | <builtin.h> | X | |||||
| _fasin | <builtin.h> | X | |||||
| fclose | <stdio.h> | X | X | X | |||
| _fcloseall | <stdio.h> | X | |||||
| _fcos | <builtin.h> | X | |||||
| _fcossin | <builtin.h> | X | |||||
| fcvt | <stdlib.h> | X | X | ||||
| fdopen | <stdio.h> | X | X | ||||
| feof | <stdio.h> | X | X | X | |||
| ferror | <stdio.h> | X | X | X | |||
| fflush | <stdio.h> | X | X | X | |||
| fgetc | <stdio.h> | X | X | X | |||
| _fgetchar | <stdio.h> | X | |||||
| fgetpos | <stdio.h> | X | X | ||||
| fgets | <stdio.h> | X | X | X | |||
| fgetwc | <wchar.h> | X | X | ||||
| fgetws | <wchar.h> | X X |
X |
||||
| _filelength | <io.h> | X | |||||
| fileno | <stdio.h> | X | X | ||||
| floor | <math.h> | X | X | X | |||
| _flushall | <stdio.h> | X | |||||
| fmod | <math.h> | X | X | X | |||
| fopen | <stdio.h> | X | X | X | |||
| _fpatan | <builtin.h> | X | |||||
| _fpreset | <float.h> | X | |||||
| fprintf | <stdio.h> | X | X | X | X | ||
| _fptan | <builtin.h> | X | |||||
| fputc | <stdio.h> | X | X | X | |||
| _fputchar | <stdio.h> | X | |||||
| fputs | <stdio.h> | X | X | X | |||
| fputwc | <wchar.h> | X X |
X |
||||
| fputws | <wchar.h> | X X |
X |
||||
| fread | <stdio.h> | X | X | X | |||
| free | <stdlib.h> <malloc.h> |
X |
X |
X |
X |
X |
|
| _freemod | <stdlib.h> | X | |||||
| freopen | <stdio.h> | X | X | X | |||
| frexp | <math.h> | X | X | X | |||
| fscanf | <stdio.h> | X | X | X | X | ||
| fseek | <stdio.h> | X | X | X | |||
| fsetpos | <stdio.h> | X | X | ||||
| _fsin | <builtin.h> | X | |||||
| _fsincos | <builtin.h> | X | |||||
| _fsqrt | <builtin.h> | X | |||||
| fstat types for fstat |
<sys\stat.h> <sys\types.h> |
X |
X |
X |
|||
| ftell | <stdio.h> | X | X | X | |||
| _ftime types for _ftime |
<sys\timeb.h> <sys\types.h> |
X |
|||||
| _fullpath | <stdlib.h> | X | |||||
| fwide | <stdio.h> <wchar.h> |
X |
|||||
| fwprintf | <wchar.h> | X | |||||
| fwscanf | <wchar.h> | X | |||||
| fwrite | <stdio.h> | X | X | X | |||
| _fyl2x | <builtin.h> | X | |||||
| _fyl2xp1 | <builtin.h> | X | |||||
| _f2xm1 | <builtin.h> | X |
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IBM C and C++ Compilers Functions and
Macros