Fix arc tangent.

ZCG-coder · ZCG-coder · commit 03330aaaeea9 · 2024-06-18T13:09:09.000+08:00
diff --git a/src/trig/trig.cpp b/src/trig/trig.cpp
@@ -285,6 +285,10 @@ namespace steppable::__internals::arithmetic
     std::string atan(const std::string& _x, const int decimals, const int mode)
     {
         auto x = _x;
+        // Zero check
+        if (isZeroString(x))
+            return "0";
+
         bool isReduced = false;
         if (compare(abs(x, 0), "1", 0) != "0")
         {
diff --git a/tests/testTrig.cpp b/tests/testTrig.cpp
@@ -56,4 +56,8 @@ _.assertIsEqual(asin("0.5", 2, 1), "30.00");
 _.assertIsEqual(asin("0", 2, 1), "0");
 SECTION_END()
 
+SECTION(Test arc tangent)
+_.assertIsEqual(atan("0", 2, 1), "0");
+SECTION_END()
+
 TEST_END()

Original file line number	Diff line number	Diff line change
`@@ -285,6 +285,10 @@ namespace steppable::__internals::arithmetic`
`285`	`285`	`std::string atan(const std::string& _x, const int decimals, const int mode)`
`286`	`286`	`{`
`287`	`287`	`auto x = _x;`
	`288`	`+ // Zero check`
	`289`	`+ if (isZeroString(x))`
	`290`	`+ return "0";`
	`291`	`+`
`288`	`292`	`bool isReduced = false;`
`289`	`293`	`if (compare(abs(x, 0), "1", 0) != "0")`
`290`	`294`	`{`