求助：MIPS实现牛顿平方根近似代码特定迭代下无预期结果

Hey there! I know how frustrating it is when an iterative method you’ve coded doesn’t produce the expected results—let’s work through this together. To help pinpoint where things are going wrong, could you share a few key pieces of info:

• Your complete MIPS code: Seeing how you’ve structured the iteration loop, initialized variables, handled input/output, and implemented the core Newton-Raphson formula (x_{k+1} = (x_k + target/x_k)/2, where target is the value you’re finding the square root of) is essential.
• Expected vs. actual output examples: For instance, if you input x=4 (target value) and n=3 iterations, did you expect 2.0 but get a garbage number, or no output at all?
• Floating-point handling details: MIPS uses separate floating-point registers (like $f0, $f2) and instructions—are you using these correctly, or accidentally mixing integer operations with floating-point values?
• Input setup: Are you reading your initial x (target value) and n (iteration count) properly? For example, if x is a float, are you using floating-point load/store instructions instead of integer ones?

Some common pitfalls to keep in mind while you gather these details:

• Mixing integer and floating-point operations (e.g., using add instead of add.s for floats)
• Messing up the order of operations in the Newton step (forgetting to divide the sum by 2, or dividing the wrong values)
• Off-by-one errors in your iteration loop counter (running one too many or too few iterations)
• Incorrectly initializing your starting guess for the square root

Once you share the code and those specifics, we can zero in on the exact issue!

内容的提问来源于stack exchange，提问作者apparition