Rounding off the value of Floating point value

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LEARN ABOUT NETBSD

fesetround

FEGETROUND(3)						   BSD Library Functions Manual 					     FEGETROUND(3)

NAME

     fegetround, fesetround -- floating-point rounding control

LIBRARY

     Math Library (libm, -lm)

SYNOPSIS

     #include <fenv.h>
     #pragma STDC FENV_ACCESS ON

     int
     fegetround(void);

     int
     fesetround(int round);

DESCRIPTION

     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).

RETURN VALUES

     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.

SEE ALSO

     fenv(3), fpgetround(3), fpsetround(3)

STANDARDS

     The fegetround() and fesetround() functions conform to ISO/IEC 9899:1999 (``ISO C99'').

HISTORY

     These routines first appeared in FreeBSD 5.3 and NetBSD 6.0.  They supersede the non-standard fpgetround(3) and fpsetround(3) functions.

BSD
								    May 8, 2004 							       BSD

Shell Programming and Scripting