Is there a program similar to the reciprocal sqrt routine for computing the approximate square root?

Analyze the is there a program similar to the reciprocal sqrt routine for computing the approximate square root?.

Examples
Input: "test_input_1"
Output: "output_1"
Hints

Is there a program similar to the reciprocal sqrt routine for computing the approximate square root?

Analyze the is there a program similar to the reciprocal sqrt routine for computing the approximate square root?.