cubic root (cbrt) fails

[Former user]

Originally reported on Google Code with ID 152

What steps will reproduce the problem?
1. cbrt(1.09)

What is the expected output? What do you see instead?
expected: 1,0291424665715064607373575413984
seen: 1

What version of the product are you using? On what operating system?
v0.9, windows xp sp2

Please provide any additional information below.
cbrt(1.1) is ok
cbrt(1.099999999999999999) fails
cbrt(1.000000000000000001) fails
cbrt(1) is ok

Reported by gabriel.gross on 2008-02-03 22:14:53

[Former user]

``` confirmed and fixed in 0.9 and trunk. The Newtorn-Raphson loop started with a fixed working precision. But for values 1+x with x << 1 the working precision in the first iteration has to be adjusted such that the small changes produced by the small x are not ignored. ```

Reported by `wolf.lammen` on 2008-02-04 02:28:46 - Status changed: `Fixed` - Labels added: Milestone-0.10

[Former user]

Reported by `wolf.lammen` on 2008-02-04 02:32:25