| Function/Macro | #include file | ANSI/ISO | ANSI/ISO 93 | POSIX | XPG4 | Extension | Subsystem |
| raise | <signal.h> | X | X | ||||
| rand | <stdlib.h> | X | X | ||||
| read | <io.h> | X | X | X | |||
| realloc | <stdlib.h> <malloc.h> |
X |
X |
X |
X |
X |
|
| regcomp | <regex.h> | X | X | ||||
| regerror | <regex.h> | X | X | ||||
| regexec | <regex.h> | X | X | ||||
| regfree | <regex.h> | X | X | ||||
| remove | <stdio.h> <io.h> |
X |
X |
X |
|||
| rename | <stdio.h> <io.h> |
X |
X |
X |
|||
| rewind | <stdio.h> | X | X | X | |||
| rmdir | <direct.h> | X | X | ||||
| _rmtmp | <stdio.h> | X | |||||
| _rotl | <stdlib.h> <builtin.h> |
X X |
|||||
| _rotr | <stdlib.h> <builtin.h> |
X X |
|||||
| rpmatch | <stdlib.h> | X | X |
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IBM C and C++ Compilers
Functions and Macros