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Convert to single precision


B = single(A)


B = single(A) converts the matrix A to single precision, returning that value in B. A can be any numeric object (such as a double). If A is already single precision, single has no effect. Single-precision quantities require less storage than double-precision quantities, but have less precision and a smaller range.

The single class is primarily meant to be used to store single-precision values. Hence most operations that manipulate arrays without changing their elements are defined. Examples are reshape, size, the relational operators, subscripted assignment, and subscripted reference.

You can define your own methods for the single class by placing the appropriately named method in an @single folder within a folder on your path.


a = magic(4);
b = single(a);

  Name      Size         Bytes  Class

  a         4x4            128  double array
  b         4x4             64  single array

See Also

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Introduced before R2006a

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