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Reference Guide for OpenMatrix Language Functions
The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
Elementary Math Commands
log2
Computes the base-2 logarithm of a matrix.

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- Scripting Guide for OpenMatrix Language
  OpenMatrix is a mathematical scripting language.
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  The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
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      Returns the absolute value of a scalar/matrix/complex number.
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      Symbol for the base of the natural logarithm.
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      The spacing between two adjacent numbers in a given machine's floating point system, Epsilon.
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      The imaginary number i, such that i^2 = -1
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      Determines if x is a prime number.
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      The imaginary number i, such that i^2 = -1.
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      Least common multiple.
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      Returns the length of an object's largest dimension.
    - log
      Computes the natural log for each element of x.
    - log1p
      Natural logarithm of one plus the argument.
    - log2
      Computes the base-2 logarithm of a matrix.
    - log10
      Computes the base-10 logarithm for each element of x.
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      Converts x to a logical type.
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      Returns maximum values.
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      Returns maximum values.
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      Returns minimum values.
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      Returns minimum values.
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      Returns x modulo y.
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      Returns the number of dimensions of an array.
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      Computes the exponent of the smallest power of 2 that is greater than or equal to the input in magnitude.
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      Returns the number of elements in x.
    - ones
      Returns a matrix of ones.
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      Generalized transpose of a matrix, using a permutation vector.
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      Symbol for pi.
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      Converts polar or cylindrical coordinates to Cartesian.
    - pow2
      Computes powers of 2.
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      Returns all primes up to X.
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      Returns vector or matrix element products.
    - rank
      Computes the rank of matrix A.
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      Returns a rational approximation of the input using a continued fraction approximation.
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      Returns the real part of x.
    - realmax
      Returns a matrix whose elements are all the largest floating point number that is representable.
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      Returns a matrix whose elements are all the smallest normalized floating point number that is representable.
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      The resulting remainder of x / y.
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      Replicates an input to create a block matrix with the number of specified replications in each dimension.
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      Returns a matrix with the same elements as the input, but with reassigned dimensions.
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      Returns R, the result of rotating matrix, m, in 90-degree succession(s).
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      Rounds values to specified precision.
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      Returns the subset of the first set that does not belong to the second set.
    - setxor
      Returns the elements contained in either of two sets, but not in their intersection.
    - shiftdim
      Shift dimensions.
    - sign
      Returns the sign of the value passed in.
    - single
      Marks the given input in as a single precision data type. Single precision data can be used in the save command to write with single precision in .mat files.
    - size
      Returns the size of each dimension of an object.
    - sph2cart
      Converts spherical coordinates to Cartesian.
    - sqrt
      Returns the square root of each element of x.
    - squeeze
      Removes singular dimensions from a matrix.
    - sub2ind
      Converts subscript to a linear index.
    - sum
      Returns vector or matrix element sums.
    - union
      Returns the elements contained in either of two sets, without duplication.
    - unique
      Returns the elements of a set, without duplication.
    - vec2mat
      Converts a vector, v, to a matrix with the specified number of columns, c.
    - zeros
      Creates a matrix of zeros.
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log2

Computes the base-2 logarithm of a matrix.

Syntax

R = log2(x)

[F,E] = log2(x)

Inputs

x: Type: double | complex; Dimension: scalar | vector | matrix

Outputs

R: The returned values.; Type: double | complex; Dimension: scalar | vector | matrix.
The mantissa and exponent components of the real values.: F,E; X = F.*2.^E; Type: double; Dimension: scalar | vector | matrix.

Examples

Scalar input:

R = log2(2)

R = 1

Scalar input with multiple return:

[F,E] = log2(140)

F = 0.546875
E = 8