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12.2 Floating-point underflow

Floating point underflow denotes the situation when a floating-point number is to be created which is so close to 0 that its exponent is too low to be represented internally. By default, this causes the exception floating_point_underflow_exception (subclass of floating_point_exception) to be thrown. If you set the global variable

bool cl_inhibit_floating_point_underflow

to true, the exception will be inhibited, and a floating-point zero will be generated instead. The default value of cl_inhibit_floating_point_underflow is false.


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