From b8bbc1a310b972a9622a2877ab8e0a1ef1fa8e95 Mon Sep 17 00:00:00 2001 From: mrkn Date: Sat, 23 Nov 2013 10:52:40 +0000 Subject: * ext/bigdecimal/lib/bigdecimal/math.rb (BigMath.E): Use BigMath.exp. [Feature #6857] [ruby-core:47130] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43817 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ChangeLog | 5 +++++ ext/bigdecimal/lib/bigdecimal/math.rb | 15 +-------------- 2 files changed, 6 insertions(+), 14 deletions(-) diff --git a/ChangeLog b/ChangeLog index 2323332883..cae760fb95 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +Sat Nov 23 19:52:00 2013 Kenta Murata + + * 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 * 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 -- cgit v1.2.3