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FIRST_DIGIT

FIRST_DIGIT

Name


FIRST_DIGIT

Purpose


This function returns the first significant digit.

Category


Mathematics

Calling Sequence


Result = FIRST_DIGIT( Indata )

Inputs


Indata: A scalar or array of type floating point.

Outputs


Result: Returns the value of the first significant digit(s)
of Indata.

Procedure


This function searches recursively until it finds the first
signficant digit.

Example


Determine the first significant digit of 0.0345.
result = first_digit( 0.0345 )

Modification History


  Written by: Daithi A. Stone, 2000-06-20.
Modified: DAS, 2000-07-06 (removed LENGTH.pro).
Modified: DAS, 2000-09-25 (removed zero bug).
Modified: DAS, 2001-01-11 (fixed rounding bug).



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