if f != tt.f || err != nil {
			t.Errorf("opt ParseFloat(%s) = %b, %v want %b, nil", tt.s, f, err, tt.f)
		}
		SetOptimize(old)
	}
}

// TestRoundTrip32 tries a fraction of all finite positive float32 values.
func TestRoundTrip32(t *testing.T) {
	step := uint32(997)
	if testing.Short() {
		step = 99991
	}
	count := 0
	for i := uint32(0); i < 0xff<<23; i += step {