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I am maintaining a program that takes data from a PDP-11 (emulated!) program and puts it into a modern Windows-based system. We are having problems with some of the data values being reported as "1.#QNAN" and also "1.#QNB". The customer has recently revealed...
Answer Snippets (Read the full thread at stackoverflow):
From this page , the PDP-11 format is....
So either the above document is using a strange.
Whereas IEEE 754 uses excess 126 notation, so that the exponent bias for IEEE 754 is 127, not 126.
Used excess 128 notation for the exponent.
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Hey!
So here is what we have, a custom IEEE based setup:
Consider a five-bit floating representation based on the IEEE floating point format with 1 sign bit, two exponent bits and 2 significand bits.
And a selection of bits that needed to be converted...
Started by oneAday on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
For example, in IEEE single.
Significand field, called denormals , do not have an implicit leading bit .
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I have a set of zip files which contains several ieee-be encoded binary and text files. I have used Pythons ZipFile module and can extract the contents of the text file
def readPropFile(myZipFile): zf = zipfile.ZipFile(myZipFile,'r') # Open zip file for...
Started by Azim on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
However, with Python, a easy way to read ieee-le (or other formats) files the structure, you can express this in a struct.pack() format as desribed in Michael Dillon's response.
Be for binary IEEE-le files.
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Ask your Facebook Friends
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I am doing high precision scientific computations. In looking for the best representation of various effects, I keep coming up with reasons to want to get the next higher (or lower) double precision number available. Essentially, what I want to do is ...
Started by Mark T on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Surely the IEEE standard is totally uniform? For example.
I'm not sure I'm following your problem.
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I'm optimizing a sorting function for a numerics/statistics library based on the assumption that, after filtering out any NaNs and doing a little bit twiddling, floats can be compared as 32-bit ints without changing the result and doubles can be compared...
Started by dsimcha on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
IEEE 754, IBM added an IEEE 754 option to S/3....
Here are a brief overview of the FPA standards and their adoptions .
Other than flawed Pentiums , any x86 or x64-based CPU is using IEEE 754 as their floating-point arithmetic standard.
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IEEE conference publications in two-column format require authors to manually equalize the lengths of the columns on the last page of the final submission. I have typically done this by inserting a \newpage where necessary -- which usually ends up being...
Started by ezod on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
ACM makes us do.
IEEE requires authors to equalize the lengths of the columns on the last page.
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I am having some trouble with IEEE floating point rules preventing compiler optimizations that seem obvious. For example,
char foo(float x) { if (x == x) return 1; else return 0; }
cannot be optimized to just return 1 because NaN == NaN is false. Okay...
Started by Ken on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
It discusses the IEEE format in quite detail, taking into account implementations and architecture, there are counter examples in the domain of floating-point numbers, whether IEEE or otherwise.
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There have been quite a number of posts on various forums here and elsewhere concerning intermittent XP connectivity issues with Canon Vixia High-definition video camcorders (HVC) . I considered joining one of these to try to help clarify the situation...
Started by E_D_George on
, 19 posts
by 4 people.
Answer Snippets (Read the full thread at videohelp):
Definition format, affordable because the significant, visually lossless compression minimized be worth pointing out that "HDV remains predominantly a tape-based format despite various tapeless compliant to the HDV format."
Much ....
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Hello
I was wondering why posting IEEE papers is wrong ?
the papers are open for any subscriber and they are not even done by IEEE
they are research of many researchers around the world
I would like the forum admins to reconsider this issue if possible...
Started by flashking on
, 6 posts
by 5 people.
Answer Snippets (Read the full thread at edaboard):
In short -- IEEE has the copyright, but allows the authors to republish the papers on their own and tries to prevent request of any IEEE....
Anyway thanks for your replies Read Do not post IEEE papers on this site this is probably best .
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When I first became aware of the Float16 type I found it interesting in terms of maybe having potential as a possible lossy storage type.
Attached is a processed version of the sample in this thread which has been decoded back to PCM. The processing is...
Started by Nick.C on
, 24 posts
by 11 people.
Answer Snippets (Read the full thread at hydrogenaudio):
Using @Didjeridoo: Thanks - I am also looking....
By default, processed audio is output in Float16 format.
Noise is added during bits increases added noise.
HalfPrecision is a tool to convert PCM in WAV format to Float16 in WAV format.
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