Article: AMD's Jaguar Microarchitecture
By: TREZA (no.delete@this.ema.il), April 7, 2014 3:38 pm
Room: Moderated Discussions
Wilco (Wilco.Dijkstra.delete@this.ntlworld.com) on April 7, 2014 1:50 pm wrote:
> (I've had the misfortune of running an IEEE test on a simulator that used the x87 FPU...)
>
> Wilco
Ha ! Had the same problem. Comparing random DP divisions between a PC and a FPGA FPU, 1 in 1000 was wrong (IIRC), and, of course, the Intel chip can't be wrong !
The problem was due to double rounding, the difference between 53 and 64 bits.
> (I've had the misfortune of running an IEEE test on a simulator that used the x87 FPU...)
>
> Wilco
Ha ! Had the same problem. Comparing random DP divisions between a PC and a FPGA FPU, 1 in 1000 was wrong (IIRC), and, of course, the Intel chip can't be wrong !
The problem was due to double rounding, the difference between 53 and 64 bits.