zephyr

History

Lawrence King 7dae27a90d libc: minimal: math sqrt: sqrtf: fix numeric accuracy of sqrt and sqrtf. Changed initial guess from a simple x/3 to dividing the exponent by 2. This makes large or small numbers like 10e10 and 01e-10 converge in a few loops. Added a loop counter to ensure that the algorithm breaks out of the loop in the case that the algorithm doesn't converge (toggling between two numbers). Added test cases for sqrt and sqrtf in libc. Tested with a range of numbers between 10e10 and 10e-10. Verify good accuracy in test case. Closes: #55962 Signed-off-by: Lawrence King <lawrencek52@gmail.com>		2023-07-14 12:42:41 -04:00
..
src	libc: minimal: math sqrt: sqrtf: fix numeric accuracy of sqrt and sqrtf.	2023-07-14 12:42:41 -04:00
CMakeLists.txt
Kconfig	tests: lib: c_libc: tests for strerror, strerror_r	2022-07-04 22:53:36 +02:00
prj.conf	libc: minimal: Introduce CONFIG_MINIMAL_LIBC_NON_REENTRANT_FUNCTIONS	2022-06-01 11:03:38 +02:00
README.txt
testcase.yaml	tests/c_lib: Run basic libc tests using newlib and newlib-nano	2023-07-11 09:42:55 +02:00

README.txt

Title: Kernel Access to Standard Libraries

Description:

This test verifies kernel access to the standard C libraries.
It is intended to catch issues in which a library is completely absent
or non-functional, and is NOT intended to be a comprehensive test suite
of all functionality provided by the libraries.

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Building and Running Project:

This project outputs to the console.  It can be built and executed
on QEMU as follows:

    make run

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Troubleshooting:

Problems caused by out-dated project information can be addressed by
issuing one of the following commands then rebuilding the project:

    make clean          # discard results of previous builds
                        # but keep existing configuration info
or
    make pristine       # discard results of previous builds
                        # and restore pre-defined configuration info

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Sample Output:

***** BOOTING ZEPHYR OS vxxxx - BUILD: xxxx *****
Running test suite test_libs
tc_start() - limits_test
===================================================================
PASS - limits_test.
tc_start() - stdbool_test
===================================================================
PASS - stdbool_test.
tc_start() - stddef_test
===================================================================
PASS - stddef_test.
tc_start() - stdint_test
===================================================================
PASS - stdint_test.
tc_start() - string_test
===================================================================
PASS - string_test.
===================================================================
PROJECT EXECUTION SUCCESSFUL