diff options
Diffstat (limited to 'spec/ruby')
| -rw-r--r-- | spec/ruby/optional/capi/bignum_spec.rb | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/spec/ruby/optional/capi/bignum_spec.rb b/spec/ruby/optional/capi/bignum_spec.rb index c29d6182e8..179f053eec 100644 --- a/spec/ruby/optional/capi/bignum_spec.rb +++ b/spec/ruby/optional/capi/bignum_spec.rb @@ -7,21 +7,23 @@ def ensure_bignum(n) n end -full_range_longs = (fixnum_max == 2**(0.size * 8 - 1) - 1) +full_range_longs = (fixnum_max == max_long) +max_ulong = begin + require 'rbconfig/sizeof' + RbConfig::LIMITS['ULONG_MAX'] +rescue LoadError + nil +end +# If the system doesn't offer ULONG_MAX, assume 2's complement and derive it +# from LONG_MAX. +max_ulong ||= 2 * (max_long + 1) - 1 describe "CApiBignumSpecs" do before :each do @s = CApiBignumSpecs.new - - if full_range_longs - @max_long = 2**(0.size * 8 - 1) - 1 - @min_long = -@max_long - 1 - @max_ulong = ensure_bignum(2**(0.size * 8) - 1) - else - @max_long = ensure_bignum(2**(0.size * 8 - 1) - 1) - @min_long = ensure_bignum(-@max_long - 1) - @max_ulong = ensure_bignum(2**(0.size * 8) - 1) - end + @max_long = max_long + @min_long = min_long + @max_ulong = ensure_bignum(max_ulong) end describe "rb_big2long" do |