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From: | Paul Eggert |
Subject: | Re: Making 'eq' == 'eql' in bignum branch |
Date: | Tue, 31 Jul 2018 15:21:11 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
On 07/31/2018 08:08 AM, Drew Adams wrote:
What indications are there that many uses of floats involve round numbers? I guess conversion of integers would be the main source. But do we have any quantitative info regarding relative frequency?
In the 'make compile-always' benchmark where Emacs compiles all its own .el files, 85% of the floating-point objects that Emacs creates have the low-order three bits zero. Of course this percentage is benchmark-specific; still, for this benchmark most of Emacs's floating point numbers come from things like hash-table parameters and suchlike; that is, even though they may not be integers they are "round numbers" in the sense that you mention.
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