Cvc5RoundingMode
This enum represents a floating-point rounding mode.
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enum Cvc5RoundingMode
Rounding modes for floating-point numbers.
For many floating-point operations, infinitely precise results may not be representable with the number of available bits. Thus, the results are rounded in a certain way to one of the representable floating-point numbers.
These rounding modes directly follow the SMT-LIB theory for floating-point arithmetic, which in turn is based on IEEE Standard 754 [IEE19]. The rounding modes are specified in Sections 4.3.1 and 4.3.2 of the IEEE Standard 754.
Values:
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enumerator CVC5_RM_ROUND_NEAREST_TIES_TO_EVEN
Round to the nearest even number.
If the two nearest floating-point numbers bracketing an unrepresentable infinitely precise result are equally near, the one with an even least significant digit will be delivered.
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enumerator CVC5_RM_ROUND_TOWARD_POSITIVE
Round towards positive infinity (SMT-LIB:
+oo).The result shall be the format’s floating-point number (possibly
+oo) closest to and no less than the infinitely precise result.
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enumerator CVC5_RM_ROUND_TOWARD_NEGATIVE
Round towards negative infinity (
-oo).The result shall be the format’s floating-point number (possibly
-oo) closest to and no less than the infinitely precise result.
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enumerator CVC5_RM_ROUND_TOWARD_ZERO
Round towards zero.
The result shall be the format’s floating-point number closest to and no greater in magnitude than the infinitely precise result.
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enumerator CVC5_RM_ROUND_NEAREST_TIES_TO_AWAY
Round to the nearest number away from zero.
If the two nearest floating-point numbers bracketing an unrepresentable infinitely precise result are equally near), the one with larger magnitude will be selected.
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enumerator CVC5_RM_LAST
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enumerator CVC5_RM_ROUND_NEAREST_TIES_TO_EVEN
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const char *cvc5_rm_to_string(Cvc5RoundingMode rm)
Get a string representation of a Cvc5RoundingMode.
- Parameters:
rm – The rounding mode.
- Returns:
The string representation.