From b4985b43661521454c1e1f506d539736c1c2229d Mon Sep 17 00:00:00 2001
From: Kolezhuk Alvian <408819@edu.itmo.ru>
Date: Fri, 26 Sep 2025 23:20:21 +0300
Subject: [PATCH 1/2] add tests for IsComplexEqual

---
 README.md          |  2 +-
 tests/main_test.go | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index fb52a20..3e4b62a 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ func ShiftPointer(pointer **int, shift int) {
 	panic("not implemented")
 }
 
-// IsComplexEqual compares two complex numbers and determines if they are equal.
+// IsComplexEqual compares two complex numbers and determines if they belong to the same eps-neighborhood.
 func IsComplexEqual(a, b complex128) bool {
 	panic("not implemented")
 }
diff --git a/tests/main_test.go b/tests/main_test.go
index 324612c..dd0e26c 100644
--- a/tests/main_test.go
+++ b/tests/main_test.go
@@ -408,6 +408,18 @@ func TestIsComplexEqual(t *testing.T) {
 			b:        complex(-42, math.Inf(1)),
 			expected: false,
 		},
+		{
+			name:     "+inf +inf real equal with precision",
+			a:        complex(math.Inf(1), 1),
+			b:        complex(math.Inf(1), 1.000000001),
+			expected: true,
+		},
+		{
+			name:     "+inf +inf imag equal with precision",
+			a:        complex(1, math.Inf(1)),
+			b:        complex(1.000000001, math.Inf(1)),
+			expected: true,
+		},
 	}
 
 	for _, tc := range testCases {

From 12e91bf810188b1f7effaaaafd9a0db9c360debc Mon Sep 17 00:00:00 2001
From: Kolezhuk Alvian <408819@edu.itmo.ru>
Date: Fri, 26 Sep 2025 23:30:30 +0300
Subject: [PATCH 2/2] add solution for IsComplexEqual

---
 solution/main.go | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 solution/main.go

diff --git a/solution/main.go b/solution/main.go
new file mode 100644
index 0000000..2f7c280
--- /dev/null
+++ b/solution/main.go
@@ -0,0 +1,11 @@
+package digest
+
+import "math"
+
+func IsComplexEqual(a, b complex128) bool {
+	return isFloatEqual(real(a), real(b)) && isFloatEqual(imag(a), imag(b))
+}
+
+func isFloatEqual(a, b float64) bool {
+	return a == b || math.Abs(a-b) < 1e-6
+}