Method newLoop

loop.go:36–44

newLoop returns a new loop checker. Arguments: - name: name of the function being calculated (for error messages) - arg: argument to the function (for error messages) - precision: desired precision; the loop ends when consecutive estimates differ less than the desired precision.

(name string, arg *Decimal, precision uint32, maxItersPerDigit int)

// 	 - maxItersPerDigit: after this many iterations per digit of precision, the
// 	                     loop ends in error.
func (c *Context) newLoop(name string, arg *Decimal, precision uint32, maxItersPerDigit int) *loop {
	return &loop{
		c:             c,
		name:          name,
		arg:           new(Decimal).Set(arg),
		precision:     int32(precision),
		maxIterations: 10 + uint64(maxItersPerDigit*int(precision)),
	}
}

// done reports whether the loop is done. If it does not converge
// after the maximum number of iterations, it returns an error.