473,382 Members | 1,628 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,382 software developers and data experts.

float: IEEE, big endian, little endian

Dear readers,

Maybe someone can help:

I need to exchange data with a PLC. My computer (Linux on intel) uses the
intel format (little endian), the other device uses the motorola format (big
endian).

So I have to change the order of the bytes for "int". But for "float":

A) I do not know, if the order has also to be changed for float.

B) As the float datatype can have any format, is there a function in the
library to ensure, that I can get a 32bit IEEE floating point number?

Greetings
Ernst


Jul 22 '05 #1
0 2358

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

7
by: i_vincent | last post by:
Hi all, Newbie Python programmer here, so please be patient. I have spent all day googling for an answer to my problem, but everything I try fails to work (or works from the Interpreter with a...
9
by: franzkowiak | last post by:
Hello, I've read some bytes from a file and just now I can't interpret 4 bytes in this dates like a real value. An extract from my program def l32(c): return ord(c) + (ord(c)<<8) +...
2
by: Goran | last post by:
Hi! I need to convert from a unsigned char array to a float. I don't think i get the right results in the program below. unsigned char array1 = { 0xde, 0xc2, 0x44, 0x23}; //I'm not sure in...
54
by: Andy | last post by:
Hi, I don't know if this is the correct group to post this, but when I multiply a huge floating point value by a really small (non-zero) floating point value, I get 0 (zero) for the result. This...
5
by: Peter Hansen | last post by:
I'm investigating a puzzling problem involving an attempt to generate a constant containing an (IEEE 754) "infinity" value. (I understand that special float values are a "platform-dependent...
10
by: Chris Stankevitz | last post by:
Is this a fast way to invert a float: inline Invert(float& f) { f *= -1.0f; } I'd like the CPU to flip the sign bit (and not carry out a float-float multiplication). Please enlighten me! ...
7
by: Gary Baydo | last post by:
In an effort to write a simple rounding function, I wrote the following code out of curiosity. My question is, can I rely on the output to 'make sense'? As an added 'exercise' I tried to write...
29
by: candy_init | last post by:
Hi all, I just came across the following program: #include <stdio.h> int main() { float a = 12.5; printf("%d\n", a); printf("%d\n", *(int *)&a); return 0;
5
by: julvr | last post by:
Is the encoding for float platform independent? That is, if I take the four bytes, stick them into an ethernet packet send them to another machine, then (after endian swapping and alignment), set...
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...
0
by: taylorcarr | last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
0
by: aa123db | last post by:
Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.