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In PureData, real numbers are of the IEEE-754 32 bit floating point type with a precision of about 9 or 10 decimal digits.
For reference, see e.g. http://research.microsoft.com/~hollasch/cgindex/coding/ieeefloat.html or http://www.math.byu.edu/~schow/work/IEEEFloatingPoint.htm .

Note that PureData has no special type for representing "integer":integer numbers.

"ThomasGrill":ThomasGrill