diff options
Diffstat (limited to 'lib/cmath.rb')
-rw-r--r-- | lib/cmath.rb | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/lib/cmath.rb b/lib/cmath.rb index aee577c97c..e0c9139f8f 100644 --- a/lib/cmath.rb +++ b/lib/cmath.rb @@ -66,20 +66,12 @@ module CMath # it will be the base of logarithm. # # log(Complex(0,0)) #=> -Infinity+0.0i - def log(*args) + def log(z, b=::Math::E) begin - z, b = args - unless b.nil? || b.kind_of?(Numeric) - raise TypeError, "Numeric Number required" - end - if z.real? and z >= 0 and (b.nil? or b >= 0) - log!(*args) + if z.real? && z >= 0 && b >= 0 + log!(z, b) else - a = Complex(log!(z.abs), z.arg) - if b - a /= log(b) - end - a + Complex(log!(z.abs), z.arg) / log(b) end rescue NoMethodError handle_no_method_error @@ -397,4 +389,3 @@ module CMath module_function :handle_no_method_error end - |