WOLFRAM

Wolfram Language & System Documentation Center

"SemanticNumber" (Interpreter Type)

Number in a standard format or in natural language.

Details

Allowed Forms

  • 1234, -1234, etc.integers
    12.34real numbers
    12.45e45, 1.2E-5, 1.2*^-5numbers in scientific notation
    12,345.67numbers with separators
    1.2`10, 3.4``20numbers with a given Precision or Accuracy
    two, a fifthnumbers in natural language
    3/5, -1/2rational numbers

Restriction Specifications

Interpretation

Examples

Basic Examples  (3)

Interpret numbers:

Wolfram Language code: Interpreter["SemanticNumber"]["3"]
Wolfram Language code: Interpreter["SemanticNumber"]["6.0098e7"]
Wolfram Language code: Interpreter["SemanticNumber"]["6.0098`2"]

Interpret numbers in natural language:

Wolfram Language code: Interpreter["SemanticNumber"]["two thirds"]
Wolfram Language code: Interpreter["SemanticNumber"]["six"]

Restrict in a range:

Wolfram Language code: Interpreter[Restricted["SemanticNumber", {1, 3}]][{"one", "two", "three", "four"}]

Restrict to the first five prime numbers:

Wolfram Language code: Interpreter[Restricted["SemanticNumber", {Prime /@ Range[5]}]]["five"]

Restrict to odd numbers below 100:

Wolfram Language code: Interpreter[Restricted["SemanticNumber", {1, 100, 2}]]["seventeen"]

Set the precision:

Wolfram Language code: Interpreter[Restricted["SemanticNumber", Automatic, 10]]["one third"]

Otherwise, $MachinePrecision is implied:

Wolfram Language code: Interpreter["SemanticNumber"]["one third"]//Precision

When the number contains a Precision or Accuracy, and a precision restriction is also specified, the lower of the two will be applied:

Wolfram Language code: Interpreter[Restricted["ComputedNumber", Automatic, 3]]["1.23456789`8"]
Wolfram Language code: Interpreter[Restricted["ComputedNumber", Automatic, 2]]["1.23456789``10"]