FLT_ROUNDS

< c‎ | types‎ | limits

Defined in header `<float.h>`
#define FLT_ROUNDS /* implementation defined */

Returns 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 fesetround and FLT_ROUNDS reflects that change.

fegetroundfesetround (C99)(C99)	gets or sets rounding direction (function)
FE_DOWNWARDFE_TONEARESTFE_TOWARDZEROFE_UPWARD (C99)	floating-point rounding direction (macro constant)