Scalar FunctionsMath FunctionssignCopy MarkdownReturns the sign of a numeric expression (-1, 0, or 1), preserving the input type.Syntax sign(x) Parameters PropTypexnumeric Returns: real Examples Example 1 print sign(-5) print_0 (long)-1roundReturns the rounded number to the specified precision. Uses round-half-away-from-zero rounding. Different from bin() in that round() rounds to a specific number of digits while bin() rounds to an integer multiple of a given bin size.sinReturns the sine of the input angle in radians.