Exact subtraction of large numbers

From , 3 Years ago, written in Java, viewed 183 times.

        /** 
         * 提供精确的减法运算。 
         * @param v1 被减数 
         * @param v2 减数 
         * @return 两个参数的差 
         */
        public static double sub(double v1, double v2) {
                BigDecimal b1 = new BigDecimal(Double.toString(v1));
                BigDecimal b2 = new BigDecimal(Double.toString(v2));
                return (b1.subtract(b2)).doubleValue();
        }

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Exact subtraction of large numbers

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