rdoc update.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@25825 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/math.c b/math.c
index 51caf35c5..2b877ec64 100644
--- a/math.c
+++ b/math.c
@@ -600,7 +600,7 @@ math_erfc(VALUE obj, VALUE x)
  *  Calculates the gamma function of x.
  *
  *  Note that gamma(n) is same as fact(n-1) for integer n > 0.
- *  However gamma(n) returns float and possibly has error in calculation.
+ *  However gamma(n) returns float and can be an approximation.
  *
  *   def fact(n) (1..n).inject(1) {|r,i| r*i } end
  *   1.upto(26) {|i| p [i, Math.gamma(i), fact(i-1)] }