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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [ctype/] [toupper.c] - Rev 308
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/* FUNCTION <<toupper>>---translate characters to uppercase INDEX toupper INDEX _toupper ANSI_SYNOPSIS #include <ctype.h> int toupper(int <[c]>); int _toupper(int <[c]>); TRAD_SYNOPSIS #include <ctype.h> int toupper(<[c]>); int _toupper(<[c]>); DESCRIPTION <<toupper>> is a macro which converts lowercase characters to uppercase, leaving all other characters unchanged. It is only defined when <[c]> is an integer in the range <<EOF>> to <<255>>. You can use a compiled subroutine instead of the macro definition by undefining this macro using `<<#undef toupper>>'. <<_toupper>> performs the same conversion as <<toupper>>, but should only be used when <[c]> is known to be a lowercase character (<<a>>--<<z>>). RETURNS <<toupper>> returns the uppercase equivalent of <[c]> when it is a character between <<a>> and <<z>>, and <[c]> otherwise. <<_toupper>> returns the uppercase equivalent of <[c]> when it is a character between <<a>> and <<z>>. If <[c]> is not one of these characters, the behaviour of <<_toupper>> is undefined. PORTABILITY <<toupper>> is ANSI C. <<_toupper>> is not recommended for portable programs. No supporting OS subroutines are required. */ #include <_ansi.h> #include <ctype.h> #if defined (_MB_EXTENDED_CHARSETS_ISO) || defined (_MB_EXTENDED_CHARSETS_WINDOWS) #include <limits.h> #include <stdio.h> #include <stdlib.h> #include <wctype.h> #include <wchar.h> #endif #undef toupper int _DEFUN(toupper,(c),int c) { #if defined (_MB_EXTENDED_CHARSETS_ISO) || defined (_MB_EXTENDED_CHARSETS_WINDOWS) if ((unsigned char) c <= 0x7f) return islower (c) ? c - 'a' + 'A' : c; else if (c != EOF && MB_CUR_MAX == 1 && islower (c)) { char s[MB_LEN_MAX] = { c, '\0' }; wchar_t wc; if (mbtowc (&wc, s, 1) >= 0 && wctomb (s, (wchar_t) towupper ((wint_t) wc)) == 1) c = (unsigned char) s[0]; } return c; #else return islower (c) ? c - 'a' + 'A' : c; #endif }
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