t.Errorf("%v:\n\t     %v\n\t-    %v\n\t=    %v\n\twant %v",
				mode, x, x, got, want)
		}
	}
}

// TestFloatAdd32 tests that Float.Add/Sub of numbers with
// 24bit mantissa behaves like float32 addition/subtraction
// (excluding denormal numbers).
func TestFloatAdd32(t *testing.T) {
	// chose base such that we cross the mantissa precision limit
	const base = 1<<26 - 0x10 // 11...110000 (26 bits)