FLT_ROUNDS

From cppreference.com
< c‎ | types‎ | limits
Defined in header <float.h>
#define FLT_ROUNDS /* implementation defined */
(since C99)

Returns 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

[edit] Notes

The rounding mode can be changed with fesetround and FLT_ROUNDS reflects that change.

[edit] See also

gets or sets rounding direction
(function)
C++ documentation for FLT_ROUNDS