bors[bot]
40e12e8a7d
Merge #209
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209: Rj/refine atan2 r=jordens a=jordens
Co-authored-by: Robert Jördens <rj@quartiq.de>
2020-12-20 20:10:44 +00:00
8d9af70c19
trig/atan2: refine
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* use dynamic scaling of the inputs to get accurate ratios (effectively
floating point) to maintain accuracy for small arguments
* this also allows shifting later and keep more bits
* use u32 ratio to keep one more bit
* merge the corner case unittests into the big test value list
* print rms, absolute and axis-relative angle
* simplify the correction expression to get rid of one multiplication
* use 5 bit for the correction constant and 15 bits for r
* least squares optimal correction constant, this lowers the max error
below 5e-5
2020-12-20 21:07:23 +01:00
12d5945d81
dsp/testing: simplify
2020-12-20 20:23:32 +01:00
bors[bot]
2f122d12fa
Merge #207
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207: atan r=jordens a=matthuszagh
Adds 2-argument arctangent function. Parameters and result are `i32` integers for fast computation. Only the 16 MSBs of the inputs are used (16 LSBs are discarded). The x and y inputs can range from -1 to 1, which corresponds to `i32::MIN` and `i32::MAX`, respectively. The output ranges from -pi to pi, which corresponds to `i32::MIN` and `i32::MAX`, respectively.
- [godbolt](https://rust.godbolt.org/z/nahKrT )
# Related
- #206
Co-authored-by: Matt Huszagh <huszaghmatt@gmail.com>
2020-12-17 22:28:55 +00:00
Matt Huszagh
7e794373f4
atan2: fix output range description
2020-12-17 14:21:39 -08:00
Matt Huszagh
3125365a15
add atan2 host benchmark
2020-12-17 14:01:57 -08:00
Matt Huszagh
17cf71f22b
atan2: replace min, max with x, y
2020-12-17 11:39:32 -08:00
Matt Huszagh
9c5e68ceea
atan2: test min and max angle inputs
2020-12-17 11:34:39 -08:00
Matt Huszagh
6ffc42021e
move atan2 test before cossin test to mimic function order
2020-12-17 10:09:12 -08:00
Matt Huszagh
09a744f59c
dsp: move iir generic math functions to top-level module scope
2020-12-17 10:04:48 -08:00
Matt Huszagh
56641d5838
atan2: specify why we cannot use more than 15 bits for the atan argument
2020-12-17 10:02:35 -08:00
Matt Huszagh
1f28949bc5
atan2: store sign bits and greater of |x| and |y|
2020-12-17 09:47:39 -08:00
Matt Huszagh
cb38c3e3bd
atan2: clarify sharing bits between atan argument and constant factors
2020-12-17 09:31:38 -08:00
Matt Huszagh
5717991ada
atan2: result range is from i32::MIN+1 to i32::MAX
2020-12-17 09:31:18 -08:00
Matt Huszagh
d7111a3aa8
dsp/trig: let compiler infer type parameter in atan2 abs call
2020-12-17 08:04:53 -08:00
Matt Huszagh
d9d500743f
simplify atan initial angle expression
2020-12-17 08:02:54 -08:00
Matt Huszagh
2ddaab8fae
dsp: fix bench import path
2020-12-16 16:57:18 -08:00
Matt Huszagh
85ae70fe62
rename trig tests to delineate between cossin and atan2
2020-12-16 16:28:49 -08:00
Matt Huszagh
7c4f608206
move cossin and atan2 into the same trig file
2020-12-16 16:26:44 -08:00
Matt Huszagh
e257545321
fix formatting
2020-12-16 16:14:11 -08:00
Matt Huszagh
5d055b01a0
dsp: add atan2
2020-12-16 16:02:42 -08:00
Matt Huszagh
6d651da758
dsp: add f64 isclose testing function
2020-12-16 16:02:17 -08:00
Matt Huszagh
17f9f0750e
dsp: move abs to lib.rs
2020-12-16 16:01:50 -08:00
Matt Huszagh
e89db65722
rename trig.rs -> cossin.rs
2020-12-16 15:57:47 -08:00
bors[bot]
a71f790574
Merge #205
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205: pll: refine gains r=jordens a=jordens
this decouples frequency and phase gain
Co-authored-by: Robert Jördens <rj@quartiq.de>
2020-12-15 11:19:34 +00:00
469c89ea70
pll: refine gains
2020-12-14 09:58:27 +01:00
bors[bot]
1425608647
Merge #202
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202: Fix/rj misc r=jordens a=jordens
Co-authored-by: Robert Jördens <rj@quartiq.de>
2020-12-13 12:26:14 +00:00
75c4120258
cossin: buffer test data output
2020-12-13 13:24:28 +01:00
4fc1f4397e
gha: upload only relevant
2020-12-13 13:24:28 +01:00
107a4ac96f
update cargosha256
2020-12-12 16:33:37 +08:00
bors[bot]
9a0e47c7eb
Merge #201
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201: cossin bench: be fair to glibc r=jordens a=jordens
Co-authored-by: Robert Jördens <rj@quartiq.de>
2020-12-11 18:21:31 +00:00
d271dccaba
cossin bench: be fair to glibc
2020-12-11 19:08:11 +01:00
bors[bot]
e3ab2b2db5
Merge #200
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200: dsp: add host benchmark r=jordens a=jordens
Co-authored-by: Robert Jördens <rj@quartiq.de>
2020-12-11 17:35:30 +00:00
f8b121600e
gha: add rust to artifact name
2020-12-11 18:34:42 +01:00
193b8e2228
gha: upload-artifacts@v2
2020-12-11 18:22:16 +01:00
3b7d90fb45
gha: artifact tweak
2020-12-11 18:07:15 +01:00
028ff3847d
upload artifacts
2020-12-11 17:36:10 +01:00
a70110d8cc
gha: fix artifact
2020-12-11 17:27:02 +01:00
d4fceea5d1
cossin: bench against (i32 as f32).sin_cos()
2020-12-11 17:26:50 +01:00
5cd93d3318
fmt
2020-12-11 17:08:16 +01:00
a709ab171e
gha: fix bors
2020-12-11 17:06:07 +01:00
4fbd729cb4
gha: fix toolchain components
2020-12-11 17:04:34 +01:00
a85738a651
dsp: add host benchmark
2020-12-11 15:19:13 +01:00
a53da3dc84
Merge pull request #199 from quartiq/feature/cossin-tuneup
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Feature/cossin tuneup
2020-12-10 18:38:11 +01:00
f6ca79a992
Merge pull request #198 from quartiq/dependabot/cargo/paste-1.0.4
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build(deps): bump paste from 1.0.3 to 1.0.4
2020-12-10 18:05:03 +01:00
de304c503b
cargo: go back to target-cpu=cortex-m4
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Appears to give better code.
Test by matthusagh.
2020-12-10 17:53:45 +01:00
72b7e72040
gitignore: no need to ignore table, is in OUT_DIR now
2020-12-10 17:49:46 +01:00
b9751ae1d0
dsp/build.rs: add cargo tag
2020-12-10 17:17:59 +01:00
7fa4b76e4d
cossin_table: fix build script usage
2020-12-10 17:17:09 +01:00
18ea94298b
Merge remote-tracking branch 'origin/master' into trig
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* origin/master:
Updating after review
Fixing semantics
Adding documentation
Fixing buffer size
Adding updated QSPI stream writer
Increasing batch size
Adding updates for QSPI streaming
Adding WIP refactor
Updating DDS control
Removing pounder test, adding file
Removing unused code
Refactoring DDS output control
Updating QSPI frequency
Adding support for hardware IO_update
Fixing merge issues
Adding WIP
Adding WIP HRTimer
Adding WIP experimental code
Adding WIP QSPI streaming
2020-12-10 17:02:19 +01:00
