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/ohos5.0/foundation/graphic/graphic_2d/rosen/modules/composer/vsync/src/
H A Dvsync_sampler.cpp243 double sqErrSum = 0; in UpdateErrorLocked() local
261 sqErrSum += pow(static_cast<double>(sampleErr), 2); // the 2nd power of sampleErr in UpdateErrorLocked()
266 error_ = sqErrSum / numErrSamples; in UpdateErrorLocked()