Unverified50% confidenceFactExact time
IEEE 754 floating-point numbers do not satisfy the associative and distributive laws of the real numbers, and rounding errors accumulate and propagate.
1
Sources
50%
Confidence
Long-term
Relevance
10/18/2026
First Seen
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Related Claims
UnverifiedDue to IEEE 754 floating-point precision limitations, directly using EXPECT_EQ for floating-point comparisons will almost certainly lead to false failures, and EXPECT_NEAR should be used to specify a tolerance.77% similarUnverifiedIEEE 754 double-precision floating point (float64) can only exactly represent fractions whose denominator is a power of 2, and decimal fractions like 0.1 and 0.2 are infinite repeating fractions in binary, so they are necessarily truncated when stored.71% similarUnverifiedThe IEEE 754 standard specifies five rounding modes: round to nearest even, round toward zero, round toward positive infinity, round toward negative infinity, and round to nearest away from zero.71% similarUnverified浮点运算不满足结合律，不同线程束的执行顺序差异会导致数值结果出现细微偏差69% similarUnverifiedThe standard error scales with the square root of n, so artificially increasing n narrows the error bars, leading to spurious statistical significance.65% similar
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