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in c/c++, double is usually 8 bytes. It has a 52-bit mantissa (or significand, or base), an 11-bit exponent, and a 1-bit sign. My question is: is the mantissa a ...
  1. 11-23-2010 #1
    thebombzen
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    Question double data type mantissa

    in c/c++, double is usually 8 bytes. It has a 52-bit mantissa (or significand, or base), an 11-bit exponent, and a 1-bit sign. My question is: is the mantissa a 52-bit integer? Or is the decimal point just after the first bit. Meaning: if the mantissa was 1000110011100011 (in binary) would that make the value of the mantissa (assuming the exponent was 0) 1000110011100011, or 1.000110011100011? (in binary)
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  2. 11-26-2010 #2
    Rubberman
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    Everything you wanted (or not) to know: IEEE 754-1985 - Wikipedia, the free encyclopedia
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!
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