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The most portable way of determining a floating-point exceptional condition has occurred is to use the floating-point exception facultiesfacilities provided by C99 in {{fenv.h}} \[[ISO/IEC 9899:1999|AA. C References#ISO/IEC 9899-1999]\]. |
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For information regarding floating-point number conversions, see FLP34-C. Ensure that floating point conversions are within range of the new type.
Although C99 does not require all implementations to support floating-point exceptions. Each exception macro in fenv.h is defined if and only if the corresponding exception is supported. Only implementations that use IEC 60559 (formerly IEEE-754) floating-point arithmetic are required to support all five exceptions defined by C99, they generally exist only on architectures using IEEE-754. Nevertheless, these functions are the most portable solution for handling floating-point exceptions.
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Operating System | How to handle floating point errors | |||
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Linux | Use the C99 floating-point exception functions. | |||
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