How does math.min actually work?

java math min built-in
Samuel L Jackson picture Samuel L Jackson · Sep 25, 2013 · Viewed 21.9k times · Source

I understand that all of the math functions in java are built in. But I was wondering out of curiosity how Math.min() actually works?

I checked the java documentation and couldn't find anything to help me. I'm quite new to java.

Answer

Gray picture Gray · Sep 25, 2013

int

public static int min(int a, int b) {
    return (a <= b) ? a : b;
}

long

public static long min(long a, long b) {
     return (a <= b) ? a : b;
}

float

public static float min(float a, float b) {
    if (a != a) return a;   // a is NaN
    if ((a == 0.0f) && (b == 0.0f) && (Float.floatToIntBits(b) == negativeZeroFloatBits)) {
         return b;
    }
    return (a <= b) ? a : b;
 }

double

public static double min(double a, double b) {
    if (a != a) return a;   // a is NaN
    if ((a == 0.0d) && (b == 0.0d) && (Double.doubleToLongBits(b) == negativeZeroDoubleBits)) {
        return b;
    }
    return (a <= b) ? a : b;
}

More info: Here

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