| 0,0 → 1,75 |
|---|
| /* |
| 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 |
| } |