toupper(3p) [centos man page]
TOUPPER(3P) POSIX Programmer's Manual TOUPPER(3P) PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
toupper - transliterate lowercase characters to uppercase SYNOPSIS
#include <ctype.h> int toupper(int c); DESCRIPTION
The toupper() function has as a domain a type int, the value of which is representable as an unsigned char or the value of EOF. If the argument has any other value, the behavior is undefined. If the argument of toupper() represents a lowercase letter, and there exists a corresponding uppercase letter (as defined by character type information in the program locale category LC_CTYPE ), the result shall be the corresponding uppercase letter. All other arguments in the domain are returned unchanged. RETURN VALUE
Upon successful completion, toupper() shall return the uppercase letter corresponding to the argument passed. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
setlocale(), the Base Definitions volume of IEEE Std 1003.1-2001, Chapter 7, Locale, <ctype.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . IEEE
/The Open Group 2003 TOUPPER(3P)
Check Out this Related Man Page
_TOUPPER(3P) POSIX Programmer's Manual _TOUPPER(3P) PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
_toupper -- transliterate lowercase characters to uppercase SYNOPSIS
#include <ctype.h> int _toupper(int c); DESCRIPTION
The _toupper() macro shall be equivalent to toupper() except that the application shall ensure that the argument c is a lowercase letter. RETURN VALUE
Upon successful completion, _toupper() shall return the uppercase letter corresponding to the argument passed. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
Applications should use the toupper() function instead of the obsolescent _toupper() function. RATIONALE
None. FUTURE DIRECTIONS
The _toupper() function may be removed in a future version. SEE ALSO
islower(), toupper() The Base Definitions volume of POSIX.1-2008, Chapter 7, Locale, <ctype.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . IEEE
/The Open Group 2013 _TOUPPER(3P)