Create pbrMathSquareRootTesting.sol

Contracts/pbrMathSquareRootTesting.sol

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+// SPDX-License-Identifier: UNLICENSED
+pragma solidity 0.8.26;
+
+// Unsigned
+import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; 
+// // Signed
+// import { SD59x18, sd } from "@prb/math/src/SD59x18.sol";
+
+contract pbrMathSquareRootTesting {
+
+  /// @notice Calculates the square root for the given signed number.
+  function unsignedSquareRootTestSmallValue() external pure returns (UD60x18 result) {
+    // 1 wei in uint256 is actually 1 ether in UD60x18 fixed point types.
+    UD60x18 x = ud(1);
+    // Returns 1000000000, since: 
+    // 1 ether = 10**18 = (10**9)**2
+    result = x.sqrt(); 
+  }
+
+  /// @notice Calculates the square root for the given signed number.
+  function unsignedSquareRoot(UD60x18 x) external pure returns (UD60x18 result) {
+    result = x.sqrt();
+  }
+
+}