Update change log and known issues.

Fix bug with infinity and NaN handling.

README.md

@@ -12,6 +12,8 @@ If you'd like to leave the hard work to us, you might be interested in Ceedling,
 
 If you're new to Unity, we encourage you to tour the [getting started guide][].
 
+You can also find the [change log][] and [known issues][] in our documentation.
+
 ## Getting Started
 
 The [docs][] folder contains a [getting started guide][] and much more tips about using Unity.
@@ -226,5 +228,7 @@ This is useful for specifying more information about the problem.
 
 [CI]: https://github.com/ThrowTheSwitch/Unity/workflows/CI/badge.svg
 [getting started guide]: docs/UnityGettingStartedGuide.md
+[change log]: docs/UnityChangeLog.md
+[known issues]: docs/UnityKnownIssues.md
 [docs]: docs/
 [UnityAssertionsReference.md]: docs/UnityAssertionsReference.md

docs/UnityChangeLog.md

@@ -0,0 +1,93 @@
+# Unity Test - Change Log
+
+## A Note
+
+This document captures significant features and fixes to the Unity project core source files 
+and scripts. More detail can be found in the history on Github. 
+
+This project is now tracking changes in more detail. Previous releases get less detailed as
+we move back in histroy. 
+
+Prior to 2012, the project was hosted on SourceForge.net
+Prior to 2008, the project was an internal project and not released to the public.
+
+## Log
+
+### Unity 2.6.0 ()
+
+New Features:
+
+  - Fill out missing variations of arrays, within, etc. 
+  - Add `TEST_PRINTF()`
+  - Add `TEST_MATRIX()` and `TEST_RANGE()` options and documentation
+  - Add support for searching `TEST_SOURCE_FILE()` for determining test dependencies
+  - Add Unity BDD plugin
+  - Add `UNITY_INCLUDE_EXEC_TIME` option to report test times
+  - Allow user to override test abort underlying mechanism
+
+Significant Bugfixes:
+
+  - More portable validation of NaN and Infinity. Added `UNITY_IS_NAN` and `UNITY_IS_INF` options
+  - Add `UNITY_PROGMEM` configuration option
+  - Fix overflow detection of hex values when using arrays
+  - Fix scripts broken by Ruby standard changes
+
+Other:
+
+  - Avoid pointer comparison when one is null to avoid compiler warnings
+  - Significant improvements to documentation
+  - Updates to match latest Ruby style specification
+  - Meson, CMake, PlatformIO builds
+
+### Unity 2.5.2 (January 2021)
+
+  - improvements to RUN_TEST macro and generated RUN_TEST
+  - Fix `UNITY_TEST_ASSERT_BIT(S)_HIGH`
+  - Cleaner handling of details tracking by CMock
+
+### Unity 2.5.1 (May 2020)
+
+Mostly a bugfix and stability release.
+Bonus Features:
+
+  - Optional TEST_PRINTF macro
+  - Improve self-testing procedures.
+
+### Unity 2.5.0 (October 2019)
+
+It's been a LONG time since the last release of Unity. Finally, here it is!
+There are too many updates to list here, so some highlights:
+
+  - more standards compliant (without giving up on supporting ALL compilers, no matter how quirky)
+  - many more specialized assertions for better test feedback
+  - more examples for integrating into your world
+  - many many bugfixes and tweaks
+
+### Unity 2.4.3 (November 2017)
+
+  - Allow suiteSetUp() and suiteTearDown() to be povided as normal C functions
+  - Fix & Expand Greater Than / Less Than assertions for integers
+  - Built-in option to colorize test results
+  - Documentation updates
+
+### Unity 2.4.2 (September 2017)
+
+  - Fixed bug in UNTY_TEST_ASSERT_EACH_EQUAL_*
+  - Added TEST_ASSERT_GREATER_THAN and TEST_ASSERT_LESS_THAN
+  - Updated Module Generator to stop changing names when no style given
+  - Cleanup to custom float printing for accuracy
+  - Cleanup incorrect line numbers are partial name matching
+  - Reduce warnings from using popular function names as variable names
+
+### Unity 2.4.1 (April 2017)
+
+  - test runner generator can inject defines as well as headers
+  - added a built-in floating point print routine instead of relying on printf
+  - updated to new coding and naming standard
+  - updated documentation to be markdown instead of pdf
+  - fixed many many little bugs, most of which were supplied by the community (you people are awesome!)
+  - coding standard actually enforced in CI
+
+### Unity 2.4.0 (October, 2016)
+
+  - port from SourceForge and numerous bugfixes

docs/UnityConfigurationGuide.md

@@ -222,6 +222,17 @@ _Example:_
 #define UNITY_FLOAT_PRECISION 0.001f
 ```
 
+#### `UNITY_IS_NAN` and `UNITY_IS_INF`
+
+If your toolchain defines `isnan` and `isinf` in `math.h` as macros, nothing needs to be done. If your toolchain doesn't define these, Unity
+will create these macros itself. You may override either or both of these defines to specify how you want to evaluate if a number is NaN or Infinity.
+
+_Example:_
+
+```C
+#define UNITY_IS_NAN(n) ((n != n) ? 1 : 0)
+```
+
 ### Miscellaneous
 
 #### `UNITY_EXCLUDE_STDDEF_H`

docs/UnityKnownIssues.md

@@ -0,0 +1,13 @@
+# Unity Test - Known Issues
+
+## A Note
+
+This project will do its best to keep track of significant bugs that might effect your usage of this
+project and its supporting scripts. A more detailed and up-to-date list for cutting edge Unity can
+be found on our Github repository.
+
+## Issues
+
+  - No built-in validation of no-return functions
+  - Incomplete support for Printf-style formatting
+  - Incomplete support for VarArgs

src/unity.c

@@ -356,11 +356,11 @@ void UnityPrintFloat(const UNITY_DOUBLE input_number)
     {
         UnityPrint("0");
     }
-    else if (isnan(number))
+    else if (UNITY_IS_NAN(number))
     {
         UnityPrint("nan");
     }
-    else if (isinf(number))
+    else if (UNITY_IS_INF(number))
     {
         UnityPrint("inf");
     }
@@ -895,15 +895,15 @@ void UnityAssertEqualIntArray(UNITY_INTERNAL_PTR expected,
 #ifndef UNITY_EXCLUDE_FLOAT
 /* Wrap this define in a function with variable types as float or double */
 #define UNITY_FLOAT_OR_DOUBLE_WITHIN(delta, expected, actual, diff)                           \
-    if (isinf(expected) && isinf(actual) && (((expected) < 0) == ((actual) < 0))) return 1;   \
+    if (UNITY_IS_INF(expected) && UNITY_IS_INF(actual) && (((expected) < 0) == ((actual) < 0))) return 1;   \
     if (UNITY_NAN_CHECK) return 1;                                                            \
     (diff) = (actual) - (expected);                                                           \
     if ((diff) < 0) (diff) = -(diff);                                                         \
     if ((delta) < 0) (delta) = -(delta);                                                      \
-    return !(isnan(diff) || isinf(diff) || ((diff) > (delta)))
+    return !(UNITY_IS_NAN(diff) || UNITY_IS_INF(diff) || ((diff) > (delta)))
     /* This first part of this condition will catch any NaN or Infinite values */
 #ifndef UNITY_NAN_NOT_EQUAL_NAN
-  #define UNITY_NAN_CHECK isnan(expected) && isnan(actual)
+  #define UNITY_NAN_CHECK UNITY_IS_NAN(expected) && UNITY_IS_NAN(actual)
 #else
   #define UNITY_NAN_CHECK 0
 #endif
@@ -954,12 +954,12 @@ void UnityAssertWithinFloatArray(const UNITY_FLOAT delta,
 #endif
     }
 
-    if (isinf(in_delta))
+    if (UNITY_IS_INF(in_delta))
     {
         return; /* Arrays will be force equal with infinite delta */
     }
 
-    if (isnan(in_delta))
+    if (UNITY_IS_NAN(in_delta))
     {
         /* Delta must be correct number */
         UnityPrintPointlessAndBail();
@@ -1098,21 +1098,21 @@ void UnityAssertFloatSpecial(const UNITY_FLOAT actual,
     {
         case UNITY_FLOAT_IS_INF:
         case UNITY_FLOAT_IS_NOT_INF:
-            is_trait = isinf(actual) && (actual > 0);
+            is_trait = UNITY_IS_INF(actual) && (actual > 0);
             break;
         case UNITY_FLOAT_IS_NEG_INF:
         case UNITY_FLOAT_IS_NOT_NEG_INF:
-            is_trait = isinf(actual) && (actual < 0);
+            is_trait = UNITY_IS_INF(actual) && (actual < 0);
             break;
 
         case UNITY_FLOAT_IS_NAN:
         case UNITY_FLOAT_IS_NOT_NAN:
-            is_trait = isnan(actual) ? 1 : 0;
+            is_trait = UNITY_IS_NAN(actual) ? 1 : 0;
             break;
 
         case UNITY_FLOAT_IS_DET: /* A determinate number is non infinite and not NaN. */
         case UNITY_FLOAT_IS_NOT_DET:
-            is_trait = !isinf(actual) && !isnan(actual);
+            is_trait = !UNITY_IS_INF(actual) && !UNITY_IS_NAN(actual);
             break;
 
         case UNITY_FLOAT_INVALID_TRAIT:  /* Supress warning */
@@ -1182,12 +1182,12 @@ void UnityAssertWithinDoubleArray(const UNITY_DOUBLE delta,
 #endif
     }
 
-    if (isinf(in_delta))
+    if (UNITY_IS_INF(in_delta))
     {
         return; /* Arrays will be force equal with infinite delta */
     }
 
-    if (isnan(in_delta))
+    if (UNITY_IS_NAN(in_delta))
     {
         /* Delta must be correct number */
         UnityPrintPointlessAndBail();
@@ -1325,21 +1325,21 @@ void UnityAssertDoubleSpecial(const UNITY_DOUBLE actual,
     {
         case UNITY_FLOAT_IS_INF:
         case UNITY_FLOAT_IS_NOT_INF:
-            is_trait = isinf(actual) && (actual > 0);
+            is_trait = UNITY_IS_INF(actual) && (actual > 0);
             break;
         case UNITY_FLOAT_IS_NEG_INF:
         case UNITY_FLOAT_IS_NOT_NEG_INF:
-            is_trait = isinf(actual) && (actual < 0);
+            is_trait = UNITY_IS_INF(actual) && (actual < 0);
             break;
 
         case UNITY_FLOAT_IS_NAN:
         case UNITY_FLOAT_IS_NOT_NAN:
-            is_trait = isnan(actual) ? 1 : 0;
+            is_trait = UNITY_IS_NAN(actual) ? 1 : 0;
             break;
 
         case UNITY_FLOAT_IS_DET: /* A determinate number is non infinite and not NaN. */
         case UNITY_FLOAT_IS_NOT_DET:
-            is_trait = !isinf(actual) && !isnan(actual);
+            is_trait = !UNITY_IS_INF(actual) && !UNITY_IS_NAN(actual);
             break;
 
         case UNITY_FLOAT_INVALID_TRAIT:  /* Supress warning */

src/unity_internals.h

@@ -241,16 +241,25 @@
 #endif
 typedef UNITY_FLOAT_TYPE UNITY_FLOAT;
 
-/* isinf & isnan macros should be provided by math.h */
-#ifndef isinf
-/* The value of Inf - Inf is NaN */
-#define isinf(n) (isnan((n) - (n)) && !isnan(n))
-#endif
-
+/* isnan macro should be provided by math.h. Override if not macro */
+#ifndef UNITY_IS_NAN
 #ifndef isnan
 /* NaN is the only floating point value that does NOT equal itself.
  * Therefore if n != n, then it is NaN. */
-#define isnan(n) ((n != n) ? 1 : 0)
+#define UNITY_IS_NAN(n) ((n != n) ? 1 : 0)
+#else
+#define UNITY_IS_NAN(n) isnan(n)
+#endif
+#endif
+
+/* isinf macro should be provided by math.h. Override if not macro */
+#ifndef UNITY_IS_INF
+#ifndef isinf
+/* The value of Inf - Inf is NaN */
+#define UNITY_IS_INF(n) (UNITY_IS_NAN((n) - (n)) && !UNITY_IS_NAN(n))
+#else
+#define UNITY_IS_INF(n) isinf(n)
+#endif
 #endif
 
 #endif