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(日本語) プログラミング: 切り捨てが floor, 切り上げが ceil になのはなぜか

Monday January 7th, 2019 Kenji

Sorry, this entry is only available in 日本語.

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Ruby: Round Down with some decimal places

切り上げ切り捨て

Ruby: Round Down with some decimal places

Monday November 16th, 2015 Kenji

Memorized the way to round down number to the nth decimal places in Ruby.

The number like 0.81235 (Float) has function floor, which round down the number to zeal number, can’t round down to some decimal places.

Environment

Ruby 2.2.3p173
OS: Ubuntu 15.04

Continue reading Ruby: Round Down with some decimal places →

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