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Diffstat (limited to 'ctype/ctype.h')
-rw-r--r--ctype/ctype.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/ctype/ctype.h b/ctype/ctype.h
index f4048b3dc7..64ca26e04f 100644
--- a/ctype/ctype.h
+++ b/ctype/ctype.h
@@ -78,8 +78,8 @@ extern __const int *__ctype_toupper; /* Case conversions. */
#define __isctype(c, type) \
(__ctype_b[(int) (c)] & (unsigned short int) type)
-#define __isascii(c) (((c) & (1 << 7)) == 0) /* If high bit is set. */
-#define __toascii(c) ((c) & 0x7f) /* Mask off high bit. */
+#define __isascii(c) (((c) & ~0x7f) == 0) /* If C is a 7 bit value. */
+#define __toascii(c) ((c) & 0x7f) /* Mask off high bits. */
#define __tolower(c) ((int) __ctype_tolower[(int) (c)])
#define __toupper(c) ((int) __ctype_toupper[(int) (c)])
@@ -126,7 +126,7 @@ extern int toascii __P ((int __c));
#endif /* Use SVID or use misc. */
-#if defined(__USE_SVID) || defined(__USE_XOPEN)
+#if defined(__USE_SVID) || defined(__USE_MISC) || defined(__USE_XOPEN)
/* These are the same as `toupper' and `tolower'. */
__exctype (_toupper);
__exctype (_tolower);
@@ -152,7 +152,7 @@ __exctype (_tolower);
#define tolower(c) __tolower(c)
#define toupper(c) __toupper(c)
-#if defined(__USE_SVID) || defined(__USE_MISC)
+#if defined(__USE_SVID) || defined(__USE_MISC) || defined(__USE_XOPEN)
#define isascii(c) __isascii(c)
#define toascii(c) __toascii(c)
#endif