#define FLT_ROUNDS /* implementation defined */
Specifies the current rounding direction of floating-point arithmetic operations.
Value Explanation-1 the default rounding direction is not known 0 toward zero; same meaning as FE_TOWARDZERO 1 to nearest; same meaning as FE_TONEAREST 2 towards positive infinity; same meaning as FE_UPWARD 3 towards negative infinity; same meaning as FE_DOWNWARD other values implementation-defined behavior [edit] Notes
The rounding mode can be changed with std::fesetround and FLT_ROUNDS reflects that change.
The possible values of FLT_ROUNDS match the possible values of std::float_round_style, returned by std::numeric_limits::round_style.
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