1 Reply Latest reply on Dec 2, 2011 11:55 AM by Alvaro_Intel

    i7 Family: Extended Double Precision FP?

    tony_l

      The older Intel processors fatured 32- and 64-bit (double) precision floating point operations.  In addition there were extended double precision 80-bit floating point operations.  For my FFT application I am finding that 64-bit FP does not have quite enough precision.  Is 80-bit extended double precision floating point available on the Core i7 family, perhaps for compatibility purposes?  Specifically on the Intel Core i7-3930K hardware?

       

      If so, how do I access it through Intel or other Fortran or C?

       

      tony_l