Q
How are the 64 bits of an IEEE 754 double-precision number divided?
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A
1 sign bit, 15 exponent bits, 48 fraction bits
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B
1 sign bit, 11 exponent bits, 52 fraction bits
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C
1 sign bit, 8 exponent bits, 55 fraction bits
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D
2 sign bits, 10 exponent bits, 52 fraction bits
Correct Answer:
B. 1 sign bit, 11 exponent bits, 52 fraction bits
Explanation:
Single precision (32-bit) uses 1/8/23. Double precision uses 1/11/52.
ALSO KNOW (related points):
• Approximately how many significant decimal digits do float and double provide? → float about 7; double about 15–16
