Defined in header <cfloat> | ||
|---|---|---|
#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 |
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.
| indicates floating-point rounding modes (enum) |
|
|
(C++11)(C++11) | gets or sets rounding direction (function) |
|
(C++11) | floating-point rounding direction (macro constant) |
C documentation for FLT_ROUNDS |
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