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Feature test macros overhaul: ctype.h

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Simplify C99 test for isblank.  isascii and toascii are BSD|SVID|XSI.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
This commit is contained in:
Yaakov Selkowitz 2016-03-14 16:14:59 -05:00
parent 6ba26630e0
commit 575608b202
1 changed files with 7 additions and 6 deletions
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13
newlib/libc/include/ctype.h
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@ -2,6 +2,7 @@
#define _CTYPE_H_
#include "_ansi.h"
#include <sys/cdefs.h>
_BEGIN_STD_C
@ -19,11 +20,11 @@ int _EXFUN(isxdigit,(int __c));
int _EXFUN(tolower, (int __c));
int _EXFUN(toupper, (int __c));
#if !defined(__STRICT_ANSI__) || defined(__cplusplus) || __STDC_VERSION__ >= 199901L
#if __ISO_C_VISIBLE >= 1999
int _EXFUN(isblank, (int __c));
#endif
#ifndef __STRICT_ANSI__
#if __MISC_VISIBLE || __XSI_VISIBLE
int _EXFUN(isascii, (int __c));
int _EXFUN(toascii, (int __c));
#define _tolower(__c) ((unsigned char)(__c) - 'A' + 'a')
@ -68,8 +69,7 @@ extern __IMPORT char *__ctype_ptr__;
#define isgraph(__c) (__ctype_lookup(__c)&(_P|_U|_L|_N))
#define iscntrl(__c) (__ctype_lookup(__c)&_C)
#if defined(__GNUC__) && \
(!defined(__STRICT_ANSI__) || __STDC_VERSION__ >= 199901L)
#if defined(__GNUC__) && __ISO_C_VISIBLE >= 1999
#define isblank(__c) \
__extension__ ({ __typeof__ (__c) __x = (__c); \
(__ctype_lookup(__x)&_B) || (int) (__x) == '\t';})
@ -98,13 +98,14 @@ extern __IMPORT char *__ctype_ptr__;
(void) __ctype_ptr__[__x]; (tolower) (__x);})
# endif /* _MB_EXTENDED_CHARSETS* */
# endif /* __GNUC__ */
#endif /* !__cplusplus */
#ifndef __STRICT_ANSI__
#if __MISC_VISIBLE || __XSI_VISIBLE
#define isascii(__c) ((unsigned)(__c)<=0177)
#define toascii(__c) ((__c)&0177)
#endif
#endif /* !__cplusplus */
/* For C++ backward-compatibility only. */
extern __IMPORT _CONST char _ctype_[];