initial commit

pkg/math/math.go

@@ -0,0 +1,36 @@
+package math
+
+type signed interface {
+	~int | ~int8 | ~int16 | ~int32 | ~int64
+}
+type unsigned interface {
+	~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr
+}
+type integer interface {
+	signed | unsigned
+}
+type float interface {
+	~float32 | ~float64
+}
+type ordered interface {
+	integer | float | ~string
+}
+
+func Abs[T signed](i T) T {
+	if i > 0 {
+		return i
+	}
+	return -i
+}
+func Max[T ordered](i, j T) T {
+	if i > j {
+		return i
+	}
+	return j
+}
+func Min[T ordered](i, j T) T {
+	if i < j {
+		return i
+	}
+	return j
+}