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81 Commits

Author SHA1 Message Date
Andrew Tridgell 1f30cf93cf AP_Math: added unsigned versions of constrain functions 
sometimes it really does matter that we use constrain_uint32() instead
of constrain_int32(). For example, if we have a value like 0xFFFFFFFF
then the result will be very different

we should use unsigned constrain when dealing with unsigned values
 2022-04-09 17:04:26 +09:00
Andrew Tridgell 319592a148 AP_Math: added degF_to_Kelvin() 2022-01-17 15:16:24 +11:00
Peter Barker 99b1659e4b AP_Math: memcpy nanfs rather than iteratively setting them 2021-11-30 10:35:38 +11:00
Andrew Tridgell c5ef672fb5 AP_Math: fixed expo_curve() 
doesn't make sense as constexpr
 2021-07-23 14:47:14 +10:00
Andrew Tridgell f343c8501b AP_Math: fixed double fill_nanf() 2021-07-10 07:20:41 +10:00
Andrew Tridgell d91397f2f2 AP_Math: change wrap_PI to ftype 
prevent loss of precision
 2021-07-10 07:20:41 +10:00
Andrew Tridgell 0f2f0d4cb2 AP_Math: allow for double EKF build 2021-07-10 07:20:41 +10:00
Andrew Tridgell 154ae64e63 AP_Math: support either polarity in linear_interpolate() 2021-06-05 13:05:30 +10:00
Tom Pittenger ba6bb21560 AP_Math: added helper for16bit float conversions 2021-04-28 19:22:53 -07:00
Andrew Tridgell e884e4c5ac AP_Math: added fixedwing_turn_rate() helper 2021-02-27 14:42:20 +11:00
Andrew Tridgell 806852c9c3 AP_Math: speedup fill nanf 2020-11-10 16:15:45 +11:00
Andrew Tridgell cdcf32d22c AP_Math: added calc_lowpass_alpha_dt() 
used in several places
 2020-11-10 16:15:45 +11:00
Michael du Breuil 051640e2b2 AP_Math: Log line numbers on constrain_nan's for constrain float 2020-11-03 11:04:13 +11:00
Patrick José Pereira 6ee401cb00 AP_Math: Remove isnan check for non-float type 
Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>
 2020-10-16 09:22:05 +11:00
Tom Pittenger 787d7f5254 Revert "AP_Math: add function to convert any base to any base" 
This reverts commit 935cb39dff.
 2020-10-07 19:11:38 +11:00
Tom Pittenger 935cb39dff AP_Math: add function to convert any base to any base 
Example: convert dec 12345 to 0x12345 or dec 1200 to octal 1200
 2020-09-15 13:09:50 -07:00
Randy Mackay bdb67532b0 AP_Math: clarify get_vel_correction_for_sensor_offset comment 2020-06-02 08:33:42 +09:00
Randy Mackay 4639e8a698 AP_Math: add get_vel_correction_for_sensor_offset 2020-06-01 17:51:24 +09:00
Peter Barker 58a8e54d83 AP_Math: create and use INTERNAL_ERROR macro so we get line numbers 2020-04-30 13:21:36 +10:00
Patrick José Pereira 1635054c4f AP_Math: Add missing constexpr 
Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>
 2020-03-17 10:23:47 +11:00
Andrew Tridgell 66b4e92444 AP_Math: make fill_nanf() use a signalling NaN 
we want use of these values to trigger a FPE
 2019-10-01 17:35:26 +10:00
Peter Barker 6fe09b6120 AP_Math: move is_valid_octal into adsb 
This doesn't ensure the value is octal digits - there's more magic in
it.
 2019-10-01 09:18:15 +10:00
Peter Barker 975804fa35 AP_Math: remove unit_mod concept from wrap functions 
devcall decided it would be clearer to have non-shared implementation
for the _cd variants
 2019-09-25 13:19:44 +10:00
Andrew Tridgell 9b746b89db AP_Math: added fill_nanf() 
used in SITL to invalidate memory
 2019-09-24 12:51:54 +10:00
Peter Barker 5692f3d79e AP_Math: stop returning float for integer wrap_180/wrap_360 etc 2019-09-18 12:57:02 +10:00
Mark Whitehorn b515431008 AP_Math: add expo and throttle_curve functions 2019-04-23 09:46:38 +10:00
Peter Barker 381bb41a5e AP_Math: make constraining NaNs an internal error 2019-04-09 10:18:43 +10:00
Andrew Tridgell d4eaf09baf AP_Math: added rotation_equal() 2018-10-01 14:26:56 +09:00
Peter Barker 8fee27937a AP_Math: eliminate SITL float-equals issues 2018-08-28 09:54:47 +10:00
Peter Barker 6af0dcfed0 AP_Math: create a constrain_int64 
The template system doesn't work across 32/64 bit builds (SITL
vs fmuv4), probably because int is typedef'd to int64
 2018-06-15 08:01:22 +10:00
Tom Pittenger 3653ba61d7 AP_Math: add is_valid_octal helper function. 
returns true if valid
 2018-05-23 14:02:45 -07:00
Andrew Tridgell d4d7d1f734 AP_Math: avoid double maths when not needed 2018-05-07 11:43:23 +10:00
Andrew Tridgell f5b24a3838 AP_Math: fixed build of Sub with ChibiOS 2018-01-15 11:46:02 +11:00
Andrew Tridgell f088c3de23 AP_Math: added long templates 2018-01-15 11:46:02 +11:00
Miguel Arroyo 7cea21afa2 AP_Math: Moves rand_vec3f from SITL_State. 2017-06-29 09:22:08 +10:00
Francisco Ferreira da5060964b AP_Math: uniformize template type parameter keyword 
Use typename everywhere instead of class
 2017-06-21 18:19:31 +09:00
Andrew Tridgell 2fcecaa7c5 AP_Math: added rand_float() 2017-05-03 20:12:04 +10:00
Lucas De Marchi 82d210144b AP_Math: remove warnings from constrain_value() 
Return type is T which can be an integral type, float or double. By
dividing by 2 we avoid float operation on the first case and do the
right thing on the second and third.
 2017-01-27 12:15:19 -08:00
Lucas De Marchi 2605c7265b AP_Math: remove warnings from safe_asin() 
Return type is float, so operate on float types everywhere.
Fixes this warning while building for PX4:

../../libraries/AP_Math/AP_Math.cpp: In instantiation of 'float safe_asin(T) [with T = double]':
../../libraries/AP_Math/AP_Math.cpp:56:48:   required from here
../../libraries/AP_Math/AP_Math.cpp:44:11: warning: implicit conversion from 'float' to 'double' to match other operand of binary expression [-Wdouble-promotion]
     if (v >= 1.0f) {
           ^
../../libraries/AP_Math/AP_Math.cpp:47:11: warning: implicit conversion from 'float' to 'double' to match other operand of binary expression [-Wdouble-promotion]
     if (v <= -1.0f) {
           ^
 2017-01-27 12:15:19 -08:00
Lucas De Marchi 4f8d2059f8 AP_Math: use right epsilon for is_equal() 
We are calling fabsf(), which returns a float. We should use the epsilon
from float type, not from the argument type passed to fabsf().

On the other hand when the double version is instantiated we do want to
use the std::numeric_limits<double>::epsilon() value.

This adds a branch to the function, but it's removed when the function
is intantiated by the compiler since the type is known at compile-time.

Fixes this warning when building for PX4:
../../libraries/AP_Math/AP_Math.cpp: In instantiation of 'typename std::enable_if<std::is_floating_point<typename std::common_type<_Tp, _Up>::type>::value, bool>::type is_equal(Arithmetic1, Arithmetic2) [with Arithmetic1 = double; Arithmetic2 = double; typename std::enable_if<std::is_floating_point<typename std::common_type<_Tp, _Up>::type>::value, bool>::type = bool]':
../../libraries/AP_Math/AP_Math.cpp:23:66:   required from here
../../libraries/AP_Math/AP_Math.cpp:17:29: warning: implicit conversion from 'float' to 'double' to match other operand of binary expression [-Wdouble-promotion]
     return fabsf(v_1 - v_2) < std::numeric_limits<decltype(v_1 - v_2)>::epsilon();
                             ^
 2017-01-27 12:15:19 -08:00
murata e903cb9945 AP_Math: Change mask value to hexadecimal number. 2017-01-17 10:20:15 -08:00
Pierre Kancir da49149d19 AP_Math: is_equal correct comparison for integer as epsilon doesn't exist. 
Credit to Kwikius for the right solution
 2016-12-20 14:09:04 +00:00
Andrew Tridgell a8d10e8c2c AP_Math: added get_random16() 2016-12-02 09:49:38 +11:00
Ricardo de Almeida Gonzaga 481e3a2af6 AP_Math: Fix typos 2016-05-13 19:20:06 -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 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