| fesetround, fegetround(3) | floating-point rounding control |
| fegetround, fesetround(3) | floating-point rounding control |
| fenv, feclearexcept, fedisableexcept, feenableexcept, fegetenv, fegetexcept, fegetexceptflag, fegetround, feholdexcept, feraiseexcept, fesetenv, fesetexceptflag, fesetround, fetestexcept, feupdateenv(3) | floating-point environment control |
| FEGETROUND(3) | MidnightBSD Library Functions Manual | FEGETROUND(3) |
fegetround,
fesetround — floating-point
rounding control
Math Library (libm, -lm)
#include
<fenv.h>
#pragma STDC FENV_ACCESS ON
int
fegetround(void);
int
fesetround(int
round);
The
fegetround()
function determines the current floating-point rounding mode, and the
fesetround()
function sets the current rounding mode to round. The
rounding mode is one of FE_TONEAREST,
FE_DOWNWARD, FE_UPWARD, or
FE_TOWARDZERO, as described in
fenv(3).
The fegetround() routine returns the
current rounding mode. The fesetround() function
returns 0 on success and non-zero otherwise; however, the present
implementation always succeeds.
The fegetround() and
fesetround() functions conform to
ISO/IEC 9899:1999
(“ISO C99”).
These routines first appeared in FreeBSD 5.3. They supersede the non-standard fpgetround(3) and fpsetround(3) functions.
| May 8, 2004 | midnightbsd-3.1 |