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| author | Karl Williamson <khw@cpan.org> | 2017-11-09 18:26:43 -0700 |
|---|---|---|
| committer | Karl Williamson <khw@cpan.org> | 2017-11-09 18:51:59 -0700 |
| commit | 464decb62c023e46cc194963698a26d39b491f4d (patch) | |
| tree | 628ad5512f20373f9d46663e0c198e4191f012d6 /handy.h | |
| parent | 43cb665150ddf892c277cba7edc80937fa053fb1 (diff) | |
| download | perl-464decb62c023e46cc194963698a26d39b491f4d.tar.gz | |
handy.h: Clarify comment
Diffstat (limited to 'handy.h')
| -rw-r--r-- | handy.h | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -260,8 +260,9 @@ typedef U64TYPE U64; #endif -/* log(2) is pretty close to 0.30103, just in case anyone is grepping for it */ -#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log2(10) =~ 146/485 */ +/* log(2) (i.e., log base 10 of 2) is pretty close to 0.30103, just in case + * anyone is grepping for it */ +#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log10(2) =~ 146/485 */ #define TYPE_DIGITS(T) BIT_DIGITS(sizeof(T) * 8) #define TYPE_CHARS(T) (TYPE_DIGITS(T) + 2) /* sign, NUL */ |