3 ms·
Paul Zimmermann certainly knows that BLAS and Excel use floating-point. I assume that the spoken content of the presentation made the meaning of those slides m
by stephencanon 12y ago
Paul Zimmermann certainly knows that BLAS and Excel use floating-point. I assume that the spoken content of the presentation made the meaning of those slides much clearer; it’s too bad that the slides are being discussed in a vacuum.
Also 1e22 (note: not 10e22) is exactly representable in double (though not in float). Specifically, it is exactly equal to:
1.000011110000110011110000011001001101110101011001001 * 2^73
which requires only a 52 bit significand.
- acqq 12y agoYou are absolutely right, 1e22 fits in the double, exactly with the bit pattern you showed. And it doesn't fit in the float. Thanks. One more proof that PDF alone is too little of the presentation and that it's easy for the reader to remain confused. I consider your reply "a missing slide" between p 15 and p 16. So the author is: http://en.wikipedia.org/wiki/Paul_Zimmermann http://en.wikipedia.org/wiki/Paul_Zimmermann