copysign

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
  1. double copysign(double x, double y)
    version(FreeBSD)
    extern (C)
    double
    copysign
    (
    double x
    ,
    double y
    )
  2. double copysign(double x, double y)

Meta