ldexp(3)                                                       ldexp(3)

  ldexp()

  NAME

    ldexp() - multiply floating-point number by integral power of 2

  SYNOPSIS

    #include 

    double ldexp (double x, int exp)

  DESCRIPTION

    The ldexp(3) function multiplies a floating-point number by an integral
    power of 2.

  RETURN VALUES

    The ldexp(3) function returns the value of x times 2 raised to the power
    exp.

    If the resultant value would cause an overflow, the global variable errno
    is set and the value {HUGE_VAL} is returned.

  ERRORS

    ldexp(3) can fail because:

    [ERANGE]
        The result would cause an overflow.

  SEE ALSO

    frexp(3)

    modf(3)

  USAGE NOTES

    The ldexp function is thread safe.

    The ldexp function is not async-signal safe.