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[DOC] Update comment for DECIMAL_SIZE_OF_BITS

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Nobuyoshi Nakada 2023-11-11 18:49:19 +09:00
parent 9eac9d7178
commit 64f03460ba
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1 changed files with 3 additions and 1 deletions
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include/ruby/util.h
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@ -33,7 +33,9 @@
RBIMPL_SYMBOL_EXPORT_BEGIN() RBIMPL_SYMBOL_EXPORT_BEGIN()
/** an approximation of ceil(n * log10(2)), up to 65536 at least */ /** an approximation of ceil(n * log10(2)), up to 1,048,576 (1<<20)
* without overflow within 32-bit calculation
*/
#define DECIMAL_SIZE_OF_BITS(n) (((n) * 3010 + 9998) / 9999) #define DECIMAL_SIZE_OF_BITS(n) (((n) * 3010 + 9998) / 9999)
/** an approximation of decimal representation size for n-bytes */ /** an approximation of decimal representation size for n-bytes */