Casting Double to BigDecimal

[Alberto Vilches]

Hi everybody! We have an issue in our application, and we realized these
two lines have differents results. We wonder why because we think it should
calls to the DefaultGroovyMethods.asType(Number self, Class<T> c). But it
seems only the explicit call to "as" finally calls to the asType and the
casting do a different thing (just a new BigDecimal(1.9D), but we wonder in
which part of Groovy is happening)

(BigDecimal)1.9D  //
"1.899999999999999911182158029987476766109466552734375" ->
1.9D as BigDecimal  // "1.9"

In fact, we tried to put these two lines in the Groovy console and see the
AST in all the phases. But in all of them shows the same code:

   public java.lang.Object run() {
        ((1.9) as java.math.BigDecimal)
        return ((1.9) as java.math.BigDecimal)
    }

Somebody please could give some light? Thank you very much and happy new
year :)

-- 
Un saludo.
Alberto Vilches