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| author | Kouhei Yanagita <yanagi@shakenbu.org> | 2022-07-22 12:05:16 +0900 |
|---|---|---|
| committer | Yusuke Endoh <mame@ruby-lang.org> | 2022-08-12 15:57:52 +0900 |
| commit | 803a07263001e5466bba0f53fcc85784f4b5c686 (patch) | |
| tree | 75e93f8d4f8aad0c5038f03f0214efd6ae190e52 /test/ripper/test_lexer.rb | |
| parent | 24e33b84b5adb29d1d2f541acfba65e225b91b55 (diff) | |
| download | ruby-803a07263001e5466bba0f53fcc85784f4b5c686.tar.gz | |
Improve performance of Integer#ceildiv
This patch is suggested by nobu.
Benchmark result:
```
require 'benchmark'
n = 10 ** 7
Benchmark.bm do |x|
x.report("Fixnum/Fixnum") { a, b = 5, 2; n.times { a.ceildiv(b) } }
x.report("Bignum/Bignum") { a, b = 10**100, 10**99 - 1; n.times { a.ceildiv(b) } }
x.report("Bignum/Fixnum") { a, b = 10**100, 3; n.times { a.ceildiv(b) } }
end
```
Original:
```
user system total real
Fixnum/Fixnum 3.340009 0.043029 3.383038 ( 3.384022)
Bignum/Bignum 8.229500 0.118543 8.348043 ( 8.349574)
Bignum/Fixnum 8.328971 0.097842 8.426813 ( 8.426952)
```
Improved:
```
user system total real
Fixnum/Fixnum 0.699140 0.000961 0.700101 ( 0.700199)
Bignum/Bignum 5.076165 0.083160 5.159325 ( 5.159360)
Bignum/Fixnum 5.548684 0.115372 5.664056 ( 5.666735)
```
Diffstat (limited to 'test/ripper/test_lexer.rb')
0 files changed, 0 insertions, 0 deletions