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| author | Bram Moolenaar <Bram@vim.org> | 2013-06-12 14:10:26 +0200 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2013-06-12 14:10:26 +0200 |
| commit | 0ea4a6b94b6f7a13ef5027b43c36bda0836b51af (patch) | |
| tree | 27c05d8606028c9500525343abe7bdbfaad51584 /src/macros.h | |
| parent | 60bf1f58d0edc45582fa065c3e0f68ae0de637ee (diff) | |
| download | vim-git-0ea4a6b94b6f7a13ef5027b43c36bda0836b51af.tar.gz | |
updated for version 7.3.1171v7.3.1171
Problem: Check for digits and ascii letters can be faster.
Solution: Use a trick with one comparison. (Dominique Pelle)
Diffstat (limited to 'src/macros.h')
| -rw-r--r-- | src/macros.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/macros.h b/src/macros.h index 1737cfa54..2c305ce1d 100644 --- a/src/macros.h +++ b/src/macros.h @@ -109,15 +109,14 @@ #else # define ASCII_ISALPHA(c) ((c) < 0x7f && isalpha(c)) # define ASCII_ISALNUM(c) ((c) < 0x7f && isalnum(c)) -# define ASCII_ISLOWER(c) ((c) < 0x7f && islower(c)) -# define ASCII_ISUPPER(c) ((c) < 0x7f && isupper(c)) +# define ASCII_ISLOWER(c) ((unsigned)(c) - 'a' < 26) +# define ASCII_ISUPPER(c) ((unsigned)(c) - 'A' < 26) #endif /* Use our own isdigit() replacement, because on MS-Windows isdigit() returns * non-zero for superscript 1. Also avoids that isdigit() crashes for numbers - * below 0 and above 255. For complicated arguments and in/decrement use - * vim_isdigit() instead. */ -#define VIM_ISDIGIT(c) ((c) >= '0' && (c) <= '9') + * below 0 and above 255. */ +#define VIM_ISDIGIT(c) ((unsigned)(c) - '0' < 10) /* macro version of chartab(). * Only works with values 0-255! |