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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-10-11 22:36:28 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2007-10-11 22:36:28 +0800 |
| commit | f6e3b2f8a59922405f42c8bc283e0f5546c25d0e (patch) | |
| tree | 6f8a59c3b8f836292fda23c77b1c95eefeae9cc4 /src/shell.h | |
| parent | [PARSER] Report substition errors at expansion time (diff) | |
| download | dash-f6e3b2f8a59922405f42c8bc283e0f5546c25d0e.tar.gz dash-f6e3b2f8a59922405f42c8bc283e0f5546c25d0e.zip | |
[ARITH] Add assignment and intmax_t support
This patch adds assignment operator support in arithmetic expansions. It also changes the type used to intmax_t.
Diffstat (limited to '')
| -rw-r--r-- | src/shell.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/shell.h b/src/shell.h index 9b67696..98edc8b 100644 --- a/src/shell.h +++ b/src/shell.h @@ -92,3 +92,13 @@ extern char nullstr[1]; /* null string */ #define likely(x) __builtin_expect(!!(x),1) #define unlikely(x) __builtin_expect(!!(x),0) + +/* + * Hack to calculate maximum length. + * (length * 8 - 1) * log10(2) + 1 + 1 + 12 + * The second 1 is for the minus sign and the 12 is a safety margin. + */ +static inline int max_int_length(int bytes) +{ + return (bytes * 8 - 1) * 0.30102999566398119521 + 14; +} |