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This type is used within the ICC_PARAMETRIC_CURVE structure to indicate the function type.
typedef enum{Func4Bytes = 0x0000L, /* Y = X^(gamma) */Func12Bytes = 0x0001L, /* Y = (aX + b) ^ (gamma), (X >= -b/a)Y = 0 , (X < - b/a) */Func16Bytes = 0x0002L, /* Y = (aX + b)^(gamma) + c, (X >= -b/a)Y = c , (X < -b/a) */Func20Bytes = 0x0003L, /* Y = (aX + b)^(gamma), (X >= -b/a)Y = cX , (X < -b/a) */Func28Bytes = 0x0004L /* Y = (aX + b)^(gamma) + e, (X >= -b/a)Y = (cX + f) , (X < -b/a) */} ICCFUNCTIONTYPE;