Fill the 5th column with A, B, or C. Y Operation Result The result indicate X - Y >0 C (sample answer) p <0 X - Y <0 X +Y <0

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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### Arithmetic Overflow/Underflow Checksheet Exercise

**Answer the question by filling in the blanks with the letter code(s) of the following phrases/symbols.**

- **A.** overflow
- **B.** underflow
- **C.** neither

Complete the signed arithmetic overflow/underflow checksheet.

- The signs of the operands are given in the far-left two columns.
- The operation is specified in the 3rd column.
- The operation result is given in the 4th column.
- Fill the 5th column with A, B, or C.

#### Table

| X  | Y  | Operation | Result | The result indicate |
|----|----|-----------|--------|---------------------|
| >0 | >0 | X - Y     | >0     | C (sample answer)   |
| <0 | <0 | X - Y     | <0     |                     |
| >0 | >0 | X + Y     | <0     |                     |
| <0 | <0 | X + Y     | >0     |                     |
Transcribed Image Text:### Arithmetic Overflow/Underflow Checksheet Exercise **Answer the question by filling in the blanks with the letter code(s) of the following phrases/symbols.** - **A.** overflow - **B.** underflow - **C.** neither Complete the signed arithmetic overflow/underflow checksheet. - The signs of the operands are given in the far-left two columns. - The operation is specified in the 3rd column. - The operation result is given in the 4th column. - Fill the 5th column with A, B, or C. #### Table | X | Y | Operation | Result | The result indicate | |----|----|-----------|--------|---------------------| | >0 | >0 | X - Y | >0 | C (sample answer) | | <0 | <0 | X - Y | <0 | | | >0 | >0 | X + Y | <0 | | | <0 | <0 | X + Y | >0 | |
**Text Transcription:**

---

Consider two 8-bit registers A holding 0x5D and B holding 0xAF. Both patterns are treated as signed numbers. If the CPU performs A - B, would there be overflow, underflow, or neither? Justify. (See lecture slides for examples)

- **Step 1**: Compute A - B

- **Step 2**: The resulting pattern represents a ______ number.

- **Step 3**: A ______ 0 and B ______ 0. The expected result of A - B is ______.

- **Step 4**: ______ has happened.

---
Transcribed Image Text:**Text Transcription:** --- Consider two 8-bit registers A holding 0x5D and B holding 0xAF. Both patterns are treated as signed numbers. If the CPU performs A - B, would there be overflow, underflow, or neither? Justify. (See lecture slides for examples) - **Step 1**: Compute A - B - **Step 2**: The resulting pattern represents a ______ number. - **Step 3**: A ______ 0 and B ______ 0. The expected result of A - B is ______. - **Step 4**: ______ has happened. ---
Expert Solution
Step 1

We have,

X Y Operation  Result  The result indicate
>0 >0 X-Y >0 C
<0 <0 X-Y <0 UNDERFLOW
>0 >0 X+Y <0 OVERFLOW
<0 <0 X+Y >0 OVERFLOW
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