diff options
-rw-r--r-- | ChangeLog | 5 | ||||
-rw-r--r-- | ext/bigdecimal/lib/bigdecimal/math.rb | 15 |
2 files changed, 6 insertions, 14 deletions
@@ -1,3 +1,8 @@ +Sat Nov 23 19:52:00 2013 Kenta Murata <mrkn@mrkn.jp> + + * ext/bigdecimal/lib/bigdecimal/math.rb (BigMath.E): Use BigMath.exp. + [Feature #6857] [ruby-core:47130] + Sat Nov 23 19:46:00 2013 Kenta Murata <mrkn@mrkn.jp> * ext/bigdecimal/bigdecimal.c (BigMath_s_exp): Optimize the diff --git a/ext/bigdecimal/lib/bigdecimal/math.rb b/ext/bigdecimal/lib/bigdecimal/math.rb index 4504ccb2b0..907d3b3829 100644 --- a/ext/bigdecimal/lib/bigdecimal/math.rb +++ b/ext/bigdecimal/lib/bigdecimal/math.rb @@ -226,19 +226,6 @@ module BigMath # def E(prec) raise ArgumentError, "Zero or negative precision for E" if prec <= 0 - n = prec + BigDecimal.double_fig - one = BigDecimal("1") - y = one - d = y - z = one - i = 0 - while d.nonzero? && ((m = n - (y.exponent - d.exponent).abs) > 0) - m = BigDecimal.double_fig if m < BigDecimal.double_fig - i += 1 - z *= i - d = one.div(z,m) - y += d - end - y + BigMath.exp(1, prec) end end |