From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Jackson Subject: [PATCH 13/31] libxl: include and introduce CTYPE helper macro Date: Tue, 10 Apr 2012 20:07:47 +0100 Message-ID: <1334084885-14474-14-git-send-email-ian.jackson@eu.citrix.com> References: <1334084885-14474-1-git-send-email-ian.jackson@eu.citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1334084885-14474-1-git-send-email-ian.jackson@eu.citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: Ian Jackson List-Id: xen-devel@lists.xenproject.org Signed-off-by: Ian Jackson Acked-by: Ian Campbell --- tools/libxl/libxl_internal.h | 20 ++++++++++++++++++++ 1 files changed, 20 insertions(+), 0 deletions(-) diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h index 95c34f3..b35421f 100644 --- a/tools/libxl/libxl_internal.h +++ b/tools/libxl/libxl_internal.h @@ -33,6 +33,7 @@ #include #include #include +#include #include #include @@ -1469,6 +1470,25 @@ static inline void libxl__ctx_unlock(libxl_ctx *ctx) { } while(0) +/* + * int CTYPE(ISFOO, char c); + * int CTYPE(toupper, char c); + * int CTYPE(tolower, char c); + * + * This is necessary because passing a simple char to a ctype.h + * is forbidden. ctype.h macros take ints derived from _unsigned_ chars. + * + * If you have a char which might be EOF then you should already have + * it in an int representing an unsigned char, and you can use the + * macros directly. This generally happens only with values + * from fgetc et al. + * + * For any value known to be a character (eg, anything that came from + * a char[]), use CTYPE. + */ +#define CTYPE(isfoo,c) (isfoo((unsigned char)(c))) + + #endif /* -- 1.7.2.5