ln3 Method - IsNegative, IsPositive

Description

Determine if the large number is positive or negative.  These functions are more efficient than comparing the large number to zero.

Signature

bool IsNegative( void ) const
bool IsPositive( void ) const

Parameters

( none )

Returns

( bool )  true if the large number is negative (positive); false otherwise.

Example

If the value in the variable X is negative (strictly less than zero), then print the string X < 0:

ln X; ... if( X.IsNegative( ) ) cout << "X < 0" << endl;