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The GNU C Library

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20.5 Errors in Floating-Point Calculations

20.5.1 FP Exceptions  IEEE 754 math exceptions and how to detect them.
20.5.2 Infinity and NaN  Special values returned by calculations.
20.5.3 Examining the FPU status word  Checking for exceptions after the fact.
20.5.4 Error Reporting by Mathematical Functions  How the math functions report errors.


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