projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b63f7948 CL |
1 | .\" Copyright (c) 1991 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 3 | .\" | |
| 043368e6 KB |
4 | .\" This code is derived from software contributed to Berkeley by |
| 5 | .\" the American National Standards Committee X3, on Information | |
| 6 | .\" Processing Systems. | |
| 7 | .\" | |
| b63f7948 CL |
8 | .\" %sccs.include.redist.man% |
| 9 | .\" | |
| 043368e6 | 10 | .\" @(#)isalnum.3 5.2 (Berkeley) %G% |
| b63f7948 CL |
11 | .\" |
| 12 | .Dd | |
| 13 | .Dt ISALNUM 3 | |
| 14 | .Os | |
| 15 | .Sh NAME | |
| 16 | .Nm isalnum | |
| 17 | .Nd alphanumeric character test | |
| 18 | .Sh SYNOPSIS | |
| 19 | .Fd #include <ctype.h> | |
| 20 | .Ft int | |
| 21 | .Fn isalnum "int c" | |
| 22 | .Sh DESCRIPTION | |
| 23 | The | |
| 24 | .Fn isalnum | |
| 25 | macro tests for any character for which | |
| 26 | .Xr isalpha 3 | |
| 27 | or | |
| 28 | .Xr isdigit 3 | |
| 29 | is true. | |
| 30 | .Sh RETURN VALUES | |
| 31 | The | |
| 32 | .Fn isalnum | |
| 33 | macro returns zero if the character tests false and | |
| 34 | returns non-zero if the character tests true. | |
| 35 | .Sh SEE ALSO | |
| 36 | .Xr isascii 3 , | |
| 37 | .Xr isalnum 3 , | |
| 38 | .Xr isalpha 3 , | |
| 39 | .Xr iscntrl 3 , | |
| 40 | .Xr isdigit 3 , | |
| 41 | .Xr isgraph 3 , | |
| 42 | .Xr islower 3 , | |
| 43 | .Xr isprint 3 , | |
| 44 | .Xr ispunct 3 , | |
| 45 | .Xr isspace 3 , | |
| 46 | .Xr isupper 3 , | |
| 47 | .Xr isxdigit 3 , | |
| 48 | .Xr toascii 3 , | |
| 49 | .Xr tolower 3 , | |
| 50 | .Xr toupper 3 , | |
| 51 | .Xr stdio 3 | |
| 52 | .Xr ascii 7 | |
| 53 | .Sh STANDARDS | |
| 54 | The | |
| 55 | .Fn isalnum | |
| 56 | function conforms to | |
| 57 | .St -ansiC . |