if (relError > c.maxRelError || Double.isNaN(relError)) {
                double absError = Math.abs(backpropGradient - numericalGradient);
                if (absError < c.minAbsoluteError) {
                    if(c.print == PrintMode.ALL || c.print == PrintMode.ZEROS && absError == 0.0) {
                        log.info("Param " + i + " (" + paramName + ") passed: grad= " + backpropGradient