Brian Dunning's FileMaker Custom Functions

FractionNumerator

Extracts numerator from a string representing a fraction.

  Average rating: 4.5 (31 votes) Log in to vote

Brett Buchmiller   Brett Buchmiller
None
www.filemaker.com

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  Sample input:
FractionNumerator( "3/8" )

FractionsNumerator( "5/16" )

FractionNumerator( "3 7/8" )
  Sample output:
3

5

31

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Extracts the numerator from a string representing a fraction. Will work with improper fractions as well as mixed numbers. Result is numeric.

 

Comments

John Sauer   John Sauer, Boston, MA
Mar 7, 2018
This function fails on negative inputs.
FractionNumerator("-5 1/2") returns -9, but the correct value to return is -11.

The last line, "GetAsNumber(Middle..." should be added to the value preceding it if WholeNumber is positive, but subtracted from it if WholeNumber is negative.
 

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