about 'round' function on mingw

John W. Eaton jwe at bevo.che.wisc.edu
Thu Apr 24 20:12:51 CDT 2008


On 25-Apr-2008, Tatsuro MATSUOKA wrote:

| Hello
| This is just a forwarded mail that I've post to mingw ML.
| 
| ================================================
| Hello
| 
| I've searched by myself
| 
| octave:6> help bitmax
|  -- Built-in Function:  bitmax ()
|     Return the largest integer that can be represented as a floating
|     point value.  On IEEE-754 compatiable systems, `bitmax' is `2^53 -
|     1'.
| 
| bitmax is a built-in function
| 
| Additional help for built-in functions and operators is
| available in the on-line version of the manual.  Use the command
| `doc <topic>' to search the manual index.
| 
| Help and information about Octave is also available on the WWW
| at http://www.octave.org and via the help at octave.org
| mailing list.
| octave:7> bitmax
| ans =  9.00719925474099e+15
| 
| Is this information OK?

Yes.  The precise integer value is

  segfault:124> echo "2^53-1" | bc
  9007199254740991

jwe


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