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Hi

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?

thanks
Posted 23-Dec-12 8:43am
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Solution 2

You might use a library (see, for instance, Arbitrary-precision arithmetic libraries at Wikipedia[^]).
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Solution 1

MSDN[^] says double and long double are same.

but CPP reference says you can define a long double by putting a 'L' at the end read more at Double and Long Double[^]
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Solution 3

Floating points bigger than a double are not as standardized as float or double. It is much more compiler and Platform dependant.

http://en.wikipedia.org/wiki/Long_double[^]

If you really need more precision, you can either look for another compiler like the one from Intel or look for a library.
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