# FLT_ROUNDS

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< cpp‎ | types‎ | climits

Defined in header `<cfloat>` |  |
#define FLT_ROUNDS /* implementation defined */ |  | (since C++11)

Specifies the current rounding direction of floating-point arithmetic operations.

Value | Explanation
`-1` | the default rounding direction is not known
`0` | toward zero, FE_TOWARDZERO
`1` | to nearest, FE_TONEAREST
`2` | towards positive infinity, FE_UPWARD
`3` | towards negative infinity, FE_DOWNWARD
other values | implementation-defined behavior

### 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.

### See also

float_round_style | indicates floating-point rounding modes (enum)
fegetround fesetround (C++11)(C++11) | gets or sets rounding direction (function)
C documentation for FLT_ROUNDS

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