Method test

src/main/java/net/optifine/util/MathUtilsTest.java:19–79

(MathUtilsTest.OPER oper, boolean fast)

    }

    private static void test(MathUtilsTest.OPER oper, boolean fast)
    {
        MathHelper.fastMath = fast;
        double d0;
        double d1;

        switch (oper)
        {
            case SIN:
            case COS:
                d0 = (double)(-MathHelper.PI);
                d1 = (double)MathHelper.PI;
                break;

            case ASIN:
            case ACOS:
                d0 = -1.0D;
                d1 = 1.0D;
                break;

            default:
                return;
        }

        int i = 10;

        for (int j = 0; j <= i; ++j)
        {
            double d2 = d0 + (double)j * (d1 - d0) / (double)i;
            float f;
            float f1;

            switch (oper)
            {
                case SIN:
                    f = (float)Math.sin(d2);
                    f1 = MathHelper.sin((float)d2);
                    break;

                case COS:
                    f = (float)Math.cos(d2);
                    f1 = MathHelper.cos((float)d2);
                    break;

                case ASIN:
                    f = (float)Math.asin(d2);
                    f1 = MathUtils.asin((float)d2);
                    break;

                case ACOS:
                    f = (float)Math.acos(d2);
                    f1 = MathUtils.acos((float)d2);
                    break;

                default:
                    return;
            }