This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
 Documentation / Mathematica / Built-in Functions / Input and Output / Data Reading Options  /
Real

  • Real is the head used for real (floating-point) numbers.
  • _Real can be used to stand for a real number in a pattern.
  • You can enter a floating-point number of any length.
  • You can enter a number in scientific notation by using the form mantissa *^ exponent.
  • You can enter a floating-point number in base b using b ^^ digits. The base must be less than 36. The letters a-z or A-Z are used in sequence to stand for digits 10 through 35.
  • Real is also used to indicate an approximate real number in Read.
  • See the Mathematica book: Section 2.11.7Section 3.1.1.
  • See also: RealDigits, BaseForm, Number.

    Further Examples

    Only the third number is Real.

    In[1]:=

    Out[1]=