Add macros for testing inequalities between floats, doubles

[jonathangjertsen]

Fixes issue #559
Also fixed some formatting errors in the assertions reference.

I did not do the <=/>= variants because I'm not sure what the API should be (TEST_ASSERT_LESS_OR_EQUAL_FLOAT(threshold, actual)? TEST_ASSERT_LESS_OR_WITHIN_FLOAT(threshold, delta, actual)?), and I can't think of a case where they would be useful.

[jonathangjertsen]

Tests are passing in my fork where I've enabled workflows for the branch https://github.com/jonathangjertsen/Unity/runs/2656539535?check_suite_focus=true (there is another unrelated failure which is fixed by #557)

[jonathangjertsen]

Any thoughts, @mvandervoord? I found myself wanting this feature again today.

[mvandervoord]

People have been wanting this for awhile. Thanks for the hard work!

Do you have any interest in expanding this to support GREATER_THAN_OR_EQUAL (maybe just GE?) and LESS_THAN_OR_EQUAL and maybe NOT_EQUAL so we have a complete set of comparitors?

[jonathangjertsen]

Sure, will do. I think it should be GREATER_THAN_OR_EQUAL rather than GE for consistency

[jonathangjertsen]

Added:

TEST_ASSERT_NOT_WITHIN_FLOAT
TEST_ASSERT_NOT_EQUAL_FLOAT
TEST_ASSERT_LESS_OR_EQUAL_FLOAT
TEST_ASSERT_GREATER_OR_EQUAL_FLOAT
TEST_ASSERT_NOT_WITHIN_DOUBLE
TEST_ASSERT_NOT_EQUAL_DOUBLE
TEST_ASSERT_LESS_OR_EQUAL_DOUBLE
TEST_ASSERT_GREATER_OR_EQUAL_DOUBLE

[jonathangjertsen]

The CI pipeline is not running since it's awaiting approval by a maintainer - but it is passing in my fork: jonathangjertsen#2

[jonathangjertsen]

Is there anything else required for this to be merged (or at least reviewed)?