NAME

sgn - signum function

SYNOPSIS

double sgn(x)
double x;

DESCRIPTION

Sgn returns the signum of x.  When x is less than, equal to and greater than zero, sgn returns -1, zero and one, respectively. 

This function implements the BASIC SGN function. 

SEE ALSO

sgn(func)

from The Basmark QuickBASIC Programmerís Manual by Lawrence Leinweber