Function GetTolerance

tensorflow/lite/kernels/reduce_test.cc:232–232

for quantized Add, the error shouldn't exceed step

// for quantized Add, the error shouldn't exceed step
float GetTolerance(int min, int max) { return (max - min) / 255.0; }

// Tests for reduce_mean
TEST(ConstFloatMeanOpTest, NotKeepDims) {