function internalCompreal( re1, im1, re2, im2, r, t ) {
	var br;
	if ( r === 0.0 ) {
		return ( re1 + (im2 * (im1/re2)) ) * t;
	}
	br = im1 * r;
	if ( br === 0.0 ) {
		return ( re1*t ) + ( (im1*t) * r );
	}
	return ( re1+br ) * t;
}
Computes the real part of the quotient.

## Notes

-   See figure 10 of [Baudin (2012)][@baudin:2012].

[@baudin:2012]: https://arxiv.org/abs/1210.4539

@private
@param {number} re1 - real component
@param {number} im1 - imaginary component
@param {number} re2 - real component
@param {number} im2 - imaginary component
@param {number} r - partial result
@param {number} t - partial result
@returns {number} real part of the quotient