• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Binary floating point format
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Binary floating point format


  • Subject: Re: Binary floating point format
  • From: Steve Bird <email@hidden>
  • Date: Thu, 30 Mar 2017 21:40:18 -0400

> On Mar 30, 2017, at 8:25 PM, Carl Hoefs <email@hidden> wrote:
>
> I have megabytes of raw legacy science datasets that I'm trying to read into my app and ingest into an array of doubles. The data is supposed to be organized as a stream of 8-byte doubles. I do not know how these datasets were generated, so I don't know what format (big/little endian, byte swapped, etc) they are in.
> Here is a hex dump of 4 binary doubles:
>
> 49BF7DE372533C05 A8C02FE3135B4F09 86C22FE37E630B05 27C2C4E3E258BA08

A few minutes of LabVIEW work shows some semi-reasonable values if you swap bytes:
BF49E37D5372053C = -0.000790058
C0A8E32F5B13094F = -3185.59

Do you know that those values are wrong?

----------------------------------------------------------------
Steve Bird
Culverson Software - Elegant software that is a pleasure to use.
www.Culverson.com                     (toll free) 1-877-676-8175





_______________________________________________

Cocoa-dev mailing list (email@hidden)

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden


  • Follow-Ups:
    • Re: Binary floating point format
      • From: Carl Hoefs <email@hidden>
    • Re: Binary floating point format
      • From: Greg Parker <email@hidden>
References: 
 >Binary floating point format (From: Carl Hoefs <email@hidden>)

  • Prev by Date: Re: Binary floating point format
  • Next by Date: Re: Binary floating point format
  • Previous by thread: Re: Binary floating point format
  • Next by thread: Re: Binary floating point format
  • Index(es):
    • Date
    • Thread