modf

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

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