f_1 90 third_party/qcms/src/chain.c float X = f_1((y + 0.002f * device_a)) * WhitePointX; f_1 91 third_party/qcms/src/chain.c float Y = f_1(y) * WhitePointY; f_1 92 third_party/qcms/src/chain.c float Z = f_1((y - 0.005f * device_b)) * WhitePointZ;