FEGETROUND(3) | Library Functions Manual | FEGETROUND(3) |
fegetround
,
fesetround
— control
floating-point rounding direction modes
#include
<fenv.h>
int
fegetround
(void);
int
fesetround
(int
round);
These functions provide control of floating-point rounding direction modes. The round input argument is a value specifying a rounding direction mode and containing any of the values listed below.
FE_TONEAREST
FE_DOWNWARD
FE_UPWARD
FE_TOWARDZERO
The
fegetround
()
function gets the current rounding direction.
The
fesetround
()
function establishes the rounding direction represented by
round. If the argument is not equal to the value of
a rounding direction macro, the rounding direction is not changed.
The fegetround
() function returns the
current rounding direction. The fesetround
()
function return zero on success, and non-zero if an error occurred.
The fegetround
() and
fesetround
() functions conform to
ISO/IEC 9899:1999
(“ISO C99”).
These functions first appeared in OpenBSD 5.0.
November 14, 2020 | OpenBSD-current |