yields a version of expr in which all numbers have been set to have accuracy a.
- When SetAccuracy is used to increase the accuracy of a number, the number is padded with zeros. The zeros are taken to be in base 2. In base 10, the additional digits are usually not zeros.
- SetAccuracy returns an arbitrary-precision number even if the number of significant digits obtained will be less than $MachinePrecision.
- When expr contains machine-precision numbers, SetAccuracy[expr, a] can give results that differ from one computer system to another.
- SetAccuracy will first expose any hidden extra digits in the internal binary representation of a number, and, only after these are exhausted, add trailing zeros. »
- generates a number with all trailing digits zero and accuracy 25 on any computer system.
- SetAccuracy[expr, a] does not modify expr itself.
New in 2