# EXPONENT()

Evaluate the exponent of a floating point number

Syntax

  EXPONENT( <nFloatingPointNumber> ) --> nExponent

Arguments

  <nFloatingPointNumber> Designate any Harbour number.

Returns

  EXPONENT() returns the exponent of the <nFloatingPointNumber> number in base 2.

Description

  This function supplements MANTISSA() to return the exponent of the <nFloatingPointNumber> number.
  Values > 1 or values < -1 return a positive number 0 to 1023.
  Values < 1 or values > -1 return a negative number -1 to -1023.
  The EXPONENT( 0 ), return 0.
  The following calculation reproduces the original value:
  2^EXPONENT(<nFloatingPointNumber>) * MANTISSA(<nFloatingPointNumber>) = <nFloatingPointNumber>
  TODO: add documentation

Status

  Started

Compliance

  EXPONENT() is compatible with CT3's EXPONENT()

Platforms

  All

Files

  Source is exponent.c, library is libct.

See Also

- MANTISSA()