basisDeg4 calculation error

[zhaojunb]

result when x is [-0.5,0.5) should equals to 25.0/64.0 - x1.0/8.0(3.0/4.0 + x*(5.0/2 + x))

[zhaojunb]

if(-0.5<= x && x < 0.5){
return 115.0/192.0 + xx(-(5.0/8.0) + x*x/4.0)
}
which is not (-1.5<= x && x < 1.5)