The Sgn function returns an integer variable indicating the sign of the parameter. Syntax Sgn(number), the number parameter is any valid numeric expression. If the number is greater than 0, Sgn returns 1, which is equal to 0; if it is less than 0, it returns-1. The sign of the number parameter determines the return value of the Sgn function. 1. The symbolic function in mathematics is X >；; 0，sgnx= 1x=0，sgnx = 0x & lt0，sgnx=- 12。 Functions in computer languages return integers representing numeric symbols. Sgn Function: Format: SGN (x) x) The x parameter can be any valid numerical expression. Function: find the symbolic value description of x: x is a numerical parameter. When x