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/ohos5.0/foundation/graphic/graphic_2d/rosen/modules/composer/vsync/src/
H A Dvsync_sampler.cpp256 int64_t sampleErr = (sample - phase_) % period_; in UpdateErrorLocked() local
258 if (sampleErr > period_ / 2) { in UpdateErrorLocked()
259 sampleErr -= period_; in UpdateErrorLocked()
261 sqErrSum += pow(static_cast<double>(sampleErr), 2); // the 2nd power of sampleErr in UpdateErrorLocked()