Torture tests: what do they mean?

[Paul Dale]

(05-17-2014 08:20 AM)Tugdual Wrote:  I do get -7497258.185325587112905071814481370
Wolfram Alpha says that the result shall be
-7.497258185325587112905071831891248663417267943785263161571223470151837884956238​9571281869682281839570540842373435... × 10^6

So the 34s could achieve 26 digits.

Internally, this is computed using 39 digits so thirteen digits are wrong. Converting back to 34 digit double precision numbers isn't introducing more than a rounding error in the 34th digit which is already incorrect.

Quote:Quite impressive but I will not congratulate Walter or he will think I worship him...

It wouldn't go to Walter's head. I wrote the vast majority of the mathematical functions


- Pauli