ToPackedArray

• To use ToPackedArray, you first need to load the Developer Utilities Package using Needs["Developer`"].

• Using ToPackedArray will not change results generated by Mathematica, but can enhance speed of execution and reduce memory usage.

• ToPackedArray is effectively used automatically by many functions that generate large lists.

• ToPackedArray will successfully pack full lists of any depth containing machine-sized integers and machine-sized approximate real and complex numbers.

• ToPackedArray[expr, type] will when possible convert entries in expr to be of the specified type.

• Possible types are: Integer, Real and Complex.

• Only machine-sized numbers can be stored in packed form.

• The option Tolerance->tol can be used to specify when small numerical values can be ignored in conversion to more restrictive types, and when they must prevent conversion to packed form.