double a = 1.0;
double b = 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1;
System.out.println("a=" + a + ";b=" + b);
System.out.println(a == b);
System.out.println(Math.abs(a - b) < 1e-6);
/浮点数的比较
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double a = 1.0;
double b = 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1;
System.out.println("a=" + a + ";b=" + b);
System.out.println(a == b);
System.out.println(Math.abs(a - b) < 1e-6);