Numerator( rat )
Numerator
returns the numerator of the rational rat. Because the
numerator holds the sign of the rational it may be any integer. Integers
are rationals with denominator 1, thus Numerator
is the identity
function for integers.
gap> Numerator( 2/3 ); 2 gap> Numerator( 66/123 ); 22 # numerator and denominator are made relatively prime gap> Numerator( 17/-13 ); -17 # the numerator holds the sign of the rational gap> Numerator( 11 ); 11 # integers are rationals with denominator 1
Denominator
(see Denominator) is the counterpart to Numerator
.
GAP 3.4.4