Merge pull request #17 from tomcombriat/fix/ESP32

Fix autotests for ESP32

Author: tomcombriat

src/FixMath_Autotests.h

@@ -44,7 +44,7 @@ namespace FixMathPrivate {
       static_assert(sizeof(decltype((large+large).asRaw())) > 4, "test fail");
 
       // subtraction
-      static_assert(b - a == c - b);
+      static_assert(b - a == c - b, "test fail");
       static_assert(c - UFix<17,8>(1) == a, "test fail");
       static_assert(c - SFix<13,9>(1) == a, "test fail");
       static_assert(b + a - b == a, "test fail");
@@ -53,8 +53,8 @@ namespace FixMathPrivate {
 #if __cplusplus >= 202002L
       // These here involve shifts of negative numbers, which used to be "implementation defined" before C++-20.
       // It doesn't cause a real-world problem, but the compiler won't accept it in a constexpr
-      static_assert(UFix<43,9>(0) - b - a == -(a+b));
-      static_assert(SFix<4, 3>(-1) == SFix<4, 5>(-1)); // NOTE This is a simpler test case for the above problem. Note the difference in NF, which prompts shifting
+      static_assert(UFix<43,9>(0) - b - a == -(a+b), "test fail");
+      static_assert(SFix<4, 3>(-1) == SFix<4, 5>(-1), "test fail"); // NOTE This is a simpler test case for the above problem. Note the difference in NF, which prompts shifting
 #endif
       // here's a variant that avoids the problem by using only positive numbers
       static_assert(UFix<12,1>(999) - UFix<43,9>(0) - b - a == UFix<19,2>(999) + (-(a+b)), "test fail");