CoCoA:Sign
From ApCoCoAWiki
Sign
the sign of a number
Description
This function returns -1 if X < 0, 0 if X = 0, and 1 if X > 0.
X must be INT or RAT.
Example
Sign(123); 1 ------------------------------- Sign(-5/2); -1
Syntax
Sign(X:INT of RAT):INT
the sign of a number
This function returns -1 if X < 0, 0 if X = 0, and 1 if X > 0.
X must be INT or RAT.
Sign(123); 1 ------------------------------- Sign(-5/2); -1
Sign(X:INT of RAT):INT