ruby.git/ext/bigdecimal/extconf.rb, branch v3_3_11

[ruby/bigdecimal] Read version from bigdecimal.c

2023-02-21T09:50:02+00:00

The dependency of extconf.h on bigdecimal.gemspec does not make sense
as far as no rule is defined for it.  Also, the relationship between
extension library and gemspec file is various in default gems, and
does not work well.

https://github.com/ruby/bigdecimal/commit/7f99b28552

[ruby/bigdecimal] Remove symbol defs in missing.h for old Rubies

2022-09-19T14:40:49+00:00

Commit 2885514 added these to support Ruby 2.1. The rb_sym2str function
is defined since Ruby 2.2.

https://github.com/ruby/bigdecimal/commit/be366c9cf2

[ruby/bigdecimal] Remove array defs in missing.h for old Rubies

2022-09-19T14:40:48+00:00

Commit 02b6053 added these to support Ruby 2.0.0. The rb_array_const_ptr
function is defined since Ruby 2.3.

https://github.com/ruby/bigdecimal/commit/678699ca1b

[ruby/bigdecimal] Remove checks for `struct RRational` and `struct RComplex`

2022-07-14T12:02:02+00:00

These are used to see only if `RRATIONAL` and `RCOMPLEX` are
available, however, these two are macros and can be checked with
`#ifdef` directly.

https://github.com/ruby/bigdecimal/commit/175bbacd43

[ruby/bigdecimal] Improve extconf to allow using bigdecimal as a git gem

2021-12-23T17:28:59+00:00

e.g.
```
gem "bigdecimal", github: "ruby/bigdecimal"
```

It would fail because bundler regenerates the `gemspec`,
so `bigdecimal_version` is gone.

https://github.com/ruby/bigdecimal/commit/bccaa66f2c

[ruby/bigdecimal] Optimize rb_float_convert_to_BigDecimal by using dtoa

2021-01-12T17:11:18+00:00

This improve the conversion speed several times faster than before.

```
RUBYLIB= BUNDLER_ORIG_RUBYLIB= /home/mrkn/.rbenv/versions/3.0.0/bin/ruby -v -S benchmark-driver /home/mrkn/src/github.com/ruby/bigdecimal/benchmark/from_float.yml
ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-linux]
Calculating -------------------------------------
                     bigdecimal 3.0.0      master
              flt_e0         156.400k    783.356k i/s -    100.000k times in 0.639388s 0.127656s
            flt_ep10         158.640k    777.978k i/s -    100.000k times in 0.630359s 0.128538s
           flt_ep100         101.676k    504.259k i/s -    100.000k times in 0.983512s 0.198311s
            flt_em10         103.439k    726.339k i/s -    100.000k times in 0.966751s 0.137677s
           flt_em100          79.675k    651.446k i/s -    100.000k times in 1.255095s 0.153505s

Comparison:
                           flt_e0
              master:    783355.6 i/s
    bigdecimal 3.0.0:    156399.5 i/s - 5.01x  slower

                         flt_ep10
              master:    777977.6 i/s
    bigdecimal 3.0.0:    158639.7 i/s - 4.90x  slower

                        flt_ep100
              master:    504259.4 i/s
    bigdecimal 3.0.0:    101676.5 i/s - 4.96x  slower

                         flt_em10
              master:    726338.6 i/s
    bigdecimal 3.0.0:    103439.2 i/s - 7.02x  slower

                        flt_em100
              master:    651446.3 i/s
    bigdecimal 3.0.0:     79675.3 i/s - 8.18x  slower

```

https://github.com/ruby/bigdecimal/commit/5bdaedd530
https://github.com/ruby/bigdecimal/commit/9bfff57f90
https://github.com/ruby/bigdecimal/commit/d071a0abbb

[ruby/bigdecimal] Check the function availabilities separately

2021-01-06T00:25:13+00:00

https://github.com/ruby/bigdecimal/commit/cf839a34c8
https://github.com/ruby/bigdecimal/commit/75db4dabb9

[ruby/bigdecimal] Move some definitions to missing.h

2021-01-04T04:29:10+00:00

https://github.com/ruby/bigdecimal/commit/c2b22cc8b3
https://github.com/ruby/bigdecimal/commit/8cbca8481d
https://github.com/ruby/bigdecimal/commit/f05aecf673

Check if x86intrin.h is available not only existing

2021-01-02T00:48:42+00:00

[ruby/bigdecimal] Implement special conversions for 64-bit integers

2021-01-01T15:54:09+00:00

This change improves the conversion speed from small integers.

```
Comparison:
                           big_n9
              master:   4003688.9 i/s
    bigdecimal 3.0.0:   1270551.0 i/s - 3.15x  slower

                          big_n19
              master:   5410096.4 i/s
    bigdecimal 3.0.0:   1000250.3 i/s - 5.41x  slower
```

https://github.com/ruby/bigdecimal/commit/3429bd7e6f