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c28c3265c8
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335 Commits

Author SHA1 Message Date
Gustavo Jose de Sousa
c28c3265c8 AP_Math: AP_GeodesicGrid: optimize with neighbor umbrellas 
This is a first optimization of the algorithm. The struct for the neighbor
umbrella has only one member, but new members will be added in the next
optimization.

The table below summarizes the mean CPU time in ns from the brenchmark results
on an Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz processor:

Cases  | Naive implementation | First Optimization
--------------------------------------------------
Min.   |                 26.0 |              28.00
1st Qu.|                 78.0 |              48.75
Median |                132.0 |              57.00
Mean   |                130.1 |              61.20
3rd Qu.|                182.2 |              76.00
Max.   |                234.0 |              98.00

This optimization reduces the mean time for the worst case (Max. line) by more
than 50%.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa
0ff05b7af3 AP_Math: test_geodesic_grid: test triangles indexes 
That helps figuring out which intermediate step failed the high level call.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa
4398e1e49b AP_Math: AP_GeodesicGrid: change order of triangles 
- Change the order of the icosahedron triangles so that there's a uniform way of
finding the opposite triangle. The order visually still makes sense.

 - Change test to accommodate the order change.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa
ea412ad629 AP_Math: benchmark_geodesic_grid: add benchmark 
That will help to benchmark improvements on the section search algorithm.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa
797a2da031 AP_Math: test_geodesic_grid: test when inclusive=true 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa
b299261ad4 AP_Math: AP_GeodesicGrid: add first implementation 
The search for the geodesic section is still naive in this version.
Additionally, add unit tests.
 2016-05-16 19:08:35 -03:00
Gustavo Jose de Sousa
3f2ad764ca AP_Math: Matrix3: add inverse() and invert() functions 
Additionally, add unit tests.
 2016-05-16 19:08:35 -03:00
Gustavo Jose de Sousa
06eea2838f AP_Math: Matrix3: add det() function 
Function to calculate determinant. Additionally, add unit tests.
 2016-05-16 19:08:35 -03:00
Gustavo Jose de Sousa
26959f1448 AP_Math: define golden ratio constant 2016-05-16 19:08:35 -03:00
dgrat
7ff8004f8f AP_Math: Replace is_zero() with a template function 
This function only makes sense for floating point types. However this
function was also used for ints.
 2016-05-16 19:08:35 -03:00
Ricardo de Almeida Gonzaga
481e3a2af6 AP_Math: Fix typos 2016-05-13 19:20:06 -03:00
Lucas De Marchi
aa974399d0 AP_Math: use inline wrappers for constrain_* functions 
This avoids some warnings about "constrain_float defined but not used"
in some compilers.
 2016-05-11 22:51:19 -03:00
Lucas De Marchi
bd6e268122 AP_Math: fix coding style 
- cleanup whitespace
  - function reorder
  - fix brace position
 2016-05-10 11:41:26 -03:00
Lucas De Marchi
1dbffef7ea AP_Math: remove trailing whitespace on headers 2016-05-10 11:41:26 -03:00
Lucas De Marchi
ab1fa4b435 AP_Math: reorganize headers 
Sort and add pragma once where needed.
 2016-05-10 11:41:26 -03:00
dgrat
6d3b491c02 AP_Math: Replace is_equal with a type safe template function 
It makes sense to consider also other floating point types.
 2016-05-10 11:41:26 -03:00
dgrat
503867b7dc AP_Math: Replace safe_sqrt() by template function 2016-05-10 11:41:26 -03:00
dgrat
5deb0e8e03 AP_Math: Replace safe_asin() by template function 2016-05-10 11:41:26 -03:00
Lucas De Marchi
846b4927ec AP_Math: use if/else chain instead of 2 ternary operators 2016-05-10 11:41:26 -03:00
dgrat
174f899a29 AP_Math: Replace the constrain_* functions by a single template 
Besides being simpler this reduces ~4k in the binary size for PX4.
 2016-05-10 11:41:26 -03:00
Lucas De Marchi
348b07609c AP_Math: remove macros from unit tests 
Avoid warnings like:

[2130/2168] Compiling libraries/AP_Math/tests/test_math.cpp
../../libraries/AP_Math/tests/test_math.cpp: In member function ‘virtual void MathTest_IsZero_Test::TestBody()’:
../../libraries/AP_Math/tests/test_math.cpp:73:196: warning: converting ‘false’ to pointer type for argument 1 of ‘char
testing::internal::IsNullLiteralHelper(testing::internal::Secret*)’ [-Wconversion-null]
../../libraries/AP_Math/tests/test_math.cpp:74:199: warning: converting ‘false’ to pointer type for argument 1 of ‘char
testing::internal::IsNullLiteralHelper(testing::internal::Secret*)’ [-Wconversion-null]

Use EXPECT_TRUE() and EXPECT_FALSE() from gtest instead.
 2016-05-10 11:41:26 -03:00
dgrat
41661f815f AP_Math: Replace the pythagorous* functions with a variadic template 
The new function can deal with a variable number of function parameters.
Additionally, I renamed the functions to norm(), because this is the
standard name used in several other projects.
 2016-05-10 11:41:26 -03:00
Lucas De Marchi
880f130670 AP_Math: fix loss of precision on float addition 
When using wrap_180_cd() we are adding a small float (180 * 100) to a
possibly big number. This may lose float precision as illustrated by the
unit test failing:

    OUT: ../../libraries/AP_Math/tests/test_math.cpp:195: Failure
    OUT: Value of: wrap_180_cd(-3600000000.f)
    OUT:   Actual: -80
    OUT: Expected: 0.f
    OUT: Which is: 0
 2016-05-10 11:41:26 -03:00
dgrat
76362caee0 AP_Math: Replace wrap_* functions with template versions 2016-05-10 11:41:26 -03:00
dgrat
49cfd6fd9b AP_Math: Add gtest support for some functions 
These functions (or variants thereof) now have unit tests:

  - is_zero()
  - is_equal()
  - sq()
  - pythagorous()
  - constrain()
  - wrap_180()
  - wrap_360()

Some tests in wrap_180_cd are failing: -180 should be wrapped to 180,
not -180.
 2016-05-10 11:41:26 -03:00
Lucas De Marchi
ceea7540fd AP_Math: rename test file 
This will be reused for more math tests.
 2016-05-10 11:41:26 -03:00
Gustavo Jose de Sousa
b594b5a08b AP_Math: matrix_alg: disable FE_OVERFLOW in inverse4x4() for SITL 
There are occasional overflows on the determinant calculation in inverse4x4()
when using calibration SITL model.
 2016-05-10 16:16:37 +10:00
Gustavo Jose de Sousa
a7543d369f AP_Math: matrix_alg: protect inverseixi() against overflow 
Fail on inverse3x3() and inverse4x4() if there's float overflow during the
determinant calculation.
 2016-05-10 16:16:37 +10:00
Gustavo Jose de Sousa
39f72610e2 AP_Math: quaternion: fix style 
Remove trailing spaces and run astyle.
 2016-05-10 16:16:37 +10:00
Andrew Tridgell
e8142b0b5b AP_Math: added wrap_360() 2016-05-07 18:27:21 +10:00
Andrew Tridgell
97d27ce58f AP_Math: fixed memory leak 
found by coverity
 2016-04-26 16:41:44 +10:00
Andrew Tridgell
6165c42535 AP_Math: added from_axis_angle() method on Matrix3f 
for arbitrary rotations in simulator
 2016-04-22 10:28:15 +10:00
Michael du Breuil
bb7cf6c0b6 AP_Math: Update location_sanitize to sanitize for lat/lng 2016-04-17 19:00:03 -07:00
Ricardo de Almeida Gonzaga
5bd034a5a8 Global: start using cmath instead of math.h 2016-04-05 21:06:19 -07:00
Andrew Tridgell
6bff07397e AP_Math: added linear_interpolate() function 2016-04-02 22:44:47 +11:00
Lucas De Marchi
b4a8a0b961 AP_Math: replace header guard with pragma once 2016-03-16 18:40:41 +11:00
Gustavo Jose de Sousa
6729475b25 AP_Math: fix eulers example for PX4 2016-03-14 11:54:31 -03:00
Gustavo Jose de Sousa
d9bb696fa3 AP_Math: avoid bias in rand_num() in eulers example 
Use RAND_MAX to avoid bias.
 2016-03-14 11:54:31 -03:00
Tom Pittenger
278fb2e60d AP_Math: add location sanity checker/fixer util 2016-03-02 08:48:26 -08:00
dgrat
672acdc8ef AP_Math: Created location.h header for location functions 
Helps to order AP_Math functions by purpose.
 2016-02-27 02:51:33 -03:00
Lucas De Marchi
7f685a12bd AP_Math: remove trailing whitespaces and tabs 2016-02-27 02:51:33 -03:00
dgrat
5148e41c1a AP_Math: Cleaned macro definitions 
Moved Definitions into a separate header. Replaced PI with M_PI and
removed the M_PI_*_F macros.
 2016-02-27 02:51:33 -03:00
dgrat
7c4c8ea579 AP_Math: Remove ROTATION_COMBINATION_SUPPORT 
This function is not used.
 2016-02-27 02:51:33 -03:00
Daniel Frenzel
ead51a9d19 AP_Math: Removed useless "undef INLINE" 2016-02-25 02:10:39 -03:00
Daniel Frenzel
ef7cf7c4aa AP_Math: Removed useless header 
"float.h" does not exist. It is useless and wrong to include it.
 2016-02-25 02:10:39 -03:00
Peter Barker
80bc7a50d7 AP_Math: define MATH_CHECK_INDEXES 
Wrapped in ifndefs so the top-level Makefile can override

Assume MATH_CHECK_INDEXES is always defined
 2016-02-19 12:34:23 -02:00
Gustavo Jose de Sousa
c2e3f05dbf waf: ardupilotwaf: prefix build context methods with ap_ 
It helps to distinguish between things from waf and things from ardupilotwaf.
 2016-01-22 20:10:29 -02:00
Gustavo Jose de Sousa
a2d2661765 waf: use methods from bld instead of ardupilotwaf for the remaining 2016-01-22 20:10:29 -02:00
Gustavo Jose de Sousa
3d22490397 waf: examples: use methods from bld instead of ardupilotwaf 2016-01-22 20:10:29 -02:00
Gustavo Jose de Sousa
d281067bcc waf: make example binaries be placed in 'examples' dir 
This commit makes examples' wscripts use ardupilotwaf.example() instead of
ardupilot.program().
 2016-01-15 16:46:41 -02:00