Matt Huszagh
9a3c9afa7e
fix reciprocal_pll divide error when reference frequency is 0
2021-01-14 14:51:07 -08:00
Matt Huszagh
9f0b3eb77e
fix shift_round overflow error
2021-01-14 14:51:07 -08:00
Matt Huszagh
9697560404
reciprocal_pll: remove unneeded type cast
2021-01-13 09:08:16 -08:00
Matt Huszagh
76088efda5
dsp: add reciprocal_pll
2021-01-13 08:37:33 -08:00
Matt Huszagh
80ed715f5a
shift sin/cos before demodulation product to avoid i64
2021-01-12 16:07:04 -08:00
Matt Huszagh
41ea2ebed4
use round up half integer rounding
2021-01-12 15:59:03 -08:00
Matt Huszagh
e14aa8b613
move lock-in code to main.rs
2021-01-12 10:45:34 -08:00
Matt Huszagh
891aad3f17
remove debug_assert in divide_round
2021-01-12 07:43:28 -08:00
Matt Huszagh
31d23a3e0c
lock-in: use same method for batch_index branching in both instances
2021-01-12 07:36:56 -08:00
Matt Huszagh
bae295140d
update lock-in for integer math and PLL
2021-01-12 07:36:56 -08:00
Matt Huszagh
13543ce048
pll update input is named "x" not "input"
2021-01-04 11:14:27 -08:00
cc42c0c477
iir_int: add optimized integer iir implementation
2020-12-22 16:49:12 +01:00
8d9af70c19
trig/atan2: refine
...
* 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
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
469c89ea70
pll: refine gains
2020-12-14 09:58:27 +01:00
75c4120258
cossin: buffer test data output
2020-12-13 13:24:28 +01:00
d271dccaba
cossin bench: be fair to glibc
2020-12-11 19:08:11 +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
a85738a651
dsp: add host benchmark
2020-12-11 15:19:13 +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
77cb0bbad0
cossin: refactor and tweak
...
* shrink the LUT by another bit
* correctly use the octant bit to offset the dphi to LUT entry midpoint
* add more diagnistics to the unittest and rewrite it in relative units
* MSB-align phase and output to match the PLL data, dynamic range and
remove the need for roudning bias.
* clean up the build.rs table generator a bit
2020-12-10 16:56:13 +01:00
Matt Huszagh
a82b0f3e90
trig: fix formatting
2020-12-09 15:53:56 -08:00
Matt Huszagh
4add34cf9a
add cossin LUT
2020-12-09 15:40:18 -08:00
2ae0bdfd8d
unwrap: comments, names
2020-12-06 17:07:38 +01:00
4cfe6ba416
pll: add note on dithering
2020-12-05 13:18:02 +01:00
974fa6e220
unwrap: clean up docs and names
2020-12-05 12:55:22 +01:00
526fea8e23
unwrap: more tests
2020-12-05 12:32:27 +01:00
941a94bbf6
dsp/pll: style
2020-12-05 11:44:09 +01:00
