diff options
Diffstat (limited to 'mdk-stage1/dietlibc/lib/isalpha.c')
| -rw-r--r-- | mdk-stage1/dietlibc/lib/isalpha.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/mdk-stage1/dietlibc/lib/isalpha.c b/mdk-stage1/dietlibc/lib/isalpha.c index 07ea69696..efd8b1940 100644 --- a/mdk-stage1/dietlibc/lib/isalpha.c +++ b/mdk-stage1/dietlibc/lib/isalpha.c @@ -1,7 +1,8 @@ #include <ctype.h> -int __isalpha_ascii(int c) { - return (c>='a' && c<='z') || (c>='A' && c<='Z'); +int __isalpha_ascii ( int ch ); +int __isalpha_ascii ( int ch ) { + return (unsigned int)((ch | 0x20) - 'a') < 26u; } -int isalpha(int c) __attribute__((weak,alias("__isalpha_ascii"))); +int isalpha ( int ch ) __attribute__((weak,alias("__isalpha_ascii"))); |