toupper man page on DragonFly

toupper man page on DragonFly

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TOUPPER(3)		 BSD Library Functions Manual		    TOUPPER(3)

NAME
     toupper — lower case to upper case letter conversion

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     toupper(int c);

DESCRIPTION
     The toupper() function converts a lower-case letter to the corresponding
     upper-case letter.	 For single C chars locales the value of the argument
     is representable as an unsigned char or the value of EOF.

RETURN VALUES
     If the argument is a lower-case letter, the toupper() function returns
     the corresponding upper-case letter if there is one; otherwise the argu‐
     ment is returned unchanged.

SEE ALSO
     isalnum(3), isalpha(3), isascii(3), iscntrl(3), isdigit(3), isgraph(3),
     islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3),
     stdio(3), toascii(3), tolower(3), ascii(7)

STANDARDS
     The toupper() function conforms to ISO/IEC 9899:1990 (“ISO C90”).

BSD				 June 4, 1993				   BSD

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