printf("dcmp2(%f, %f) = %f\n", -fa, -fb, dcmp2(-fa, -fb));
printf("dcmp1(%f, %f) = %f\n", fa, fb, dcmp1(fa, fb));
printf("dcmp2(%f, %f) = %f\n", fa, fb, dcmp2(fa, fb));
printf("dcmp2(%f, %f) = %f\n", -fa, -fb, dcmp2(-fa, -fb));
printf("dcmp1(%f, %f) = %f\n", fa, fb, dcmp1(fa, fb));
printf("dcmp2(%f, %f) = %f\n", fa, fb, dcmp2(fa, fb));