On 07/22/2019 08:48 PM, Timon Gehr wrote:
> This is probably not your problem, but it may be good to know anyway: D
> allows compilers to perform arbitrary "enhancement" of floating-point
> precision for parts of the computation, including those performed at
> compile time. I think this is
On 22.07.19 14:49, drug wrote:
I have almost identical (I believe it at least) implementation (D and
C++) of the same algorithm that uses Kalman filtering. These
implementations though show different results (least significant
digits). Before I start investigating I would like to ask if this
22.07.2019 17:19, drug пишет:
22.07.2019 16:26, Guillaume Piolat пишет:
Typical floating point operations in single-precision like a simple
(a * b) + c will provide a -140dB difference if order is changed.
It's likely the order of operations is not the same in your program,
so the least
22.07.2019 16:26, Guillaume Piolat пишет:
Typical floating point operations in single-precision like a simple (a
* b) + c will provide a -140dB difference if order is changed. It's
likely the order of operations is not the same in your program, so the
least significant digit should be
On Monday, 22 July 2019 at 12:49:24 UTC, drug wrote:
Before I start investigating I would like to ask if this issue
(different results of floating points calculation for D and
C++) is well known?
This likely has little to do with the language, and more with the
implementation. Basic floating
On Monday, 22 July 2019 at 13:23:26 UTC, Guillaume Piolat wrote:
On Monday, 22 July 2019 at 12:49:24 UTC, drug wrote:
I have almost identical (I believe it at least) implementation
(D and C++) of the same algorithm that uses Kalman filtering.
These implementations though show different results
On Monday, 22 July 2019 at 12:49:24 UTC, drug wrote:
I have almost identical (I believe it at least) implementation
(D and C++) of the same algorithm that uses Kalman filtering.
These implementations though show different results (least
significant digits). Before I start investigating I would
On 23/07/2019 12:58 AM, drug wrote:
22.07.2019 15:53, rikki cattermole пишет:
https://godbolt.org/z/EtZLG0
hmm, in short - this is my local problem?
That is not how I would describe it.
I would describe it as IEEE-754 doing what IEEE-754 is good at.
But my point is, you can get the
22.07.2019 15:53, rikki cattermole пишет:
https://godbolt.org/z/EtZLG0
hmm, in short - this is my local problem?
On 23/07/2019 12:49 AM, drug wrote:
I have almost identical (I believe it at least) implementation (D and
C++) of the same algorithm that uses Kalman filtering. These
implementations though show different results (least significant
digits). Before I start investigating I would like to ask if
I have almost identical (I believe it at least) implementation (D and
C++) of the same algorithm that uses Kalman filtering. These
implementations though show different results (least significant
digits). Before I start investigating I would like to ask if this issue
(different results of
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