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issue of ATANPUF32



I fund that the result of ATANPUF32 is wrong. Could u please tell me the possible reason? As shown in the picture the result of the ATANPUF32 in R1H is incorrect. The correct result should be atan(1.23) = 0.88817377 and in per-unit being  0.88817377 / (2pi) = 0.141357, not 0.125!