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High precision in double numbers

Moharram asked:

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double type has 64 bit width and can hold number as small as 1e-308.
i want a data type even smaller than double.

i read in help that long double has 80 bit width and can store as small as 1e-4000, but in VC, when i declare a variable with this type, it threats as double type.

where is the problem?

Tags: C++


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