Programming

Function Summary

MATLAB provides these functions for working with numeric data types:

• Integer Functions
• Floating-Point Functions
• Complex Number Functions
• Infinity and NaN Functions
• Type Identification Functions
• Output Formatting Functions
  
  

  Integer Functions  

  Function	Description
  int8, int16, int32, int64	Convert to signed 1-, 2-, 4-, or 8-byte integer.
  uint8, uint16, uint32, uint64	Convert to unsigned 1-, 2-, 4-, or 8-byte integer.
  class	Return the data type of an object.
  isa	Determine if input value has the specified data type.
  isinteger	Determine if input value is an integer array.
  isnumeric	Determine if input value is a numeric array.

  
  
  

  Floating-Point Functions

  Function	Description
  double	Convert to double precision.
  single	Convert to single precision.
  class	Return the data type of an object.
  isa	Determine if input value has the specified data type.
  isfloat	Determine if input value is a floating-point array.
  isnumeric	Determine if input value is a numeric array.
  eps	Return the floating-point relative accuracy. This value is the tolerance MATLAB uses in its calculations.
  realmax	Return the largest floating-point number your computer can represent.
  realmin	Return the smallest floating-point number your computer can represent.

  
  
  

  Complex Number Functions

  Function	Description
  complex	Construct complex data from real and imaginary components.
  i or j	Return the imaginary unit used in constructing complex data.
  real	Return the real part of a complex number.
  imag	Return the imaginary part of a complex number.
  isreal	Determine if a number is real or imaginary.

  
  
  

  Infinity and NaN Functions

  Function	Description
  inf	Return the IEEE value for infinity.
  isnan	Detect NaN elements of an array.
  isinf	Detect infinite elements of an array.
  isfinite	Detect finite elements of an array.
  nan	Return the IEEE value for Not a Number.

  
  
  

  Type Identification Functions  

  Function	Description
  class	Return data type (or class).
  isa	Determine if input value is of the specified data type.
  isfloat	Determine if input value is a floating-point array.
  isinteger	Determine if input value is an integer array.
  isnumeric	Determine if input value is a numeric array.
  isreal	Determine if input value is real.
  whos	Display the data type of input.

  
  
  

  Output Formatting Functions

  Function	Description
  format	Control display format for output.

Display Format for Numeric Values

Logical Types

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