| | 1 | .\" Copyright (c) 1989, 1991, 1993 |
| | 2 | .\" The Regents of the University of California. All rights reserved. |
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| | 4 | .\" This code is derived from software contributed to Berkeley by |
| | 5 | .\" the American National Standards Committee X3, on Information |
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| | 10 | .\" are met: |
| | 11 | .\" 1. Redistributions of source code must retain the above copyright |
| | 12 | .\" notice, this list of conditions and the following disclaimer. |
| | 13 | .\" 2. Redistributions in binary form must reproduce the above copyright |
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| | 15 | .\" documentation and/or other materials provided with the distribution. |
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| | 17 | .\" may be used to endorse or promote products derived from this software |
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| | 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| | 32 | .\" @(#)toupper.3 8.1 (Berkeley) 6/4/93 |
| | 33 | .\" $FreeBSD: src/lib/libc/locale/toupper.3,v 1.21 2009/09/04 07:44:58 des Exp $ |
| | 34 | .\" |
| | 35 | .Dd July 17, 2005 |
| | 36 | .Dt TOUPPER 3 |
| | 37 | .Os |
| | 38 | .Sh NAME |
| | 39 | .Nm toupper |
| | 40 | .Nd lower case to upper case letter conversion |
| | 41 | .Sh LIBRARY |
| | 42 | .Lb libc |
| | 43 | .Sh SYNOPSIS |
| | 44 | .In ctype.h |
| | 45 | .Ft int |
| | 46 | .Fn toupper "int c" |
| | 47 | .Sh DESCRIPTION |
| | 48 | The |
| | 49 | .Fn toupper |
| | 50 | function converts a lower-case letter to the corresponding |
| | 51 | upper-case letter. |
| | 52 | The argument must be representable as an |
| | 53 | .Vt "unsigned char" |
| | 54 | or the value of |
| | 55 | .Dv EOF . |
| | 56 | .Sh RETURN VALUES |
| | 57 | If the argument is a lower-case letter, the |
| | 58 | .Fn toupper |
| | 59 | function returns the corresponding upper-case letter if there is |
| | 60 | one; otherwise the argument is returned unchanged. |
| | 61 | .Sh COMPATIBILITY |
| | 62 | The |
| | 63 | .Bx 4.4 |
| | 64 | extension of accepting arguments outside of the range of the |
| | 65 | .Vt "unsigned char" |
| | 66 | type in locales with large character sets is considered obsolete |
| | 67 | and may not be supported in future releases. |
| | 68 | The |
| | 69 | .Fn towupper |
| | 70 | function should be used instead. |
| | 71 | .Sh SEE ALSO |
| | 72 | .Xr ctype 3 , |
| | 73 | .Xr isupper 3 , |
| | 74 | .Xr towupper 3 |
| | 75 | .Sh STANDARDS |
| | 76 | The |
| | 77 | .Fn toupper |
| | 78 | function conforms to |
| | 79 | .St -isoC . |
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