_toupper(3C) Standard C Library Functions _toupper(3C)NAME_toupper - transliterate lower-case characters to upper-case
SYNOPSIS
#include <ctype.h>
int _toupper(int c);
DESCRIPTION
The _toupper() macro is equivalent to toupper(3C) except that the argu‐
ment c must be a lower-case letter.
RETURN VALUES
On successful completion, _toupper() returns the upper-case letter cor‐
responding to the argument passed.
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│CSI │Enabled │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOislower(3C), toupper(3C), attributes(5), standards(5)SunOS 5.10 24 Jul 2002 _toupper(3C)