type
<limits>
std::float_round_style
Enum type for float rounding style
Enumerated type with possible rounding styles for floating types. It is the type of member round_style in the numeric_limits class template.
It is defined as:
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| enum float_round_style { round_indeterminate = -1, round_toward_zero = 0, round_to_nearest = 1, round_toward_infinity = 2, round_toward_neg_infinity = 3 };
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With the following possible values:
| label | value | meaning |
|---|
| round_indeterminate | -1 | Rounding style cannot be determined at compile time |
| round_toward_zero | 0 | Rounding style toward zero |
| round_to_nearest | 1 | Rounding style to the nearest representable value |
| round_toward_infinity | 2 | Rounding style toward infinity |
| round_toward_neg_infinity | 3 | Rounding style toward negative infinity |
The default value in the non-specialized numeric_limits class for its round_style member is round_toward_zero (0).