fesetround man page on SunOS

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fegetround(3M)		Mathematical Library Functions		fegetround(3M)

NAME
       fegetround, fesetround - get and set current rounding direction

SYNOPSIS
       c99 [ flag... ] file... -lm [ library... ]
       #include <fenv.h>

       int fegetround(void);

       int fesetround(int round);

DESCRIPTION
       The fegetround function gets the current rounding direction.

       The  fesetround function establishes the rounding direction represented
       by its argument round. If the argument is not equal to the value	 of  a
       rounding direction macro, the rounding direction is not changed.

RETURN VALUES
       The  fegetround	function  returns  the value of the rounding direction
       macro representing the current rounding direction, or a negative	 value
       if  there  is  no such rounding direction macro or the current rounding
       direction is not determinable.

       The fesetround function returns a 0 value if and only if the  requested
       rounding direction was established.

ERRORS
       No errors are defined.

EXAMPLES
       The following example saves, sets, and restores the rounding direction,
       reporting an error and  aborting	 if  setting  the  rounding  direction
       fails:

       Example 1: Save, set, and restore the rounding direction.

       #include <fenv.h>
       #include <assert.h>
       void f(int round_dir)
       {
	     #pragma STDC FENV_ACCESS ON
	     int save_round;
	     int setround_ok;
	     save_round = fegetround();
	     setround_ok = fesetround(round_dir);
	     assert(setround_ok == 0);
	     /* ... */
	     fesetround(save_round);
	     /* ... */
       }

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌─────────────────────────────┬─────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       ├─────────────────────────────┼─────────────────────────────┤
       │Interface Stability	     │Standard			   │
       ├─────────────────────────────┼─────────────────────────────┤
       │MT-Level		     │MT-Safe			   │
       └─────────────────────────────┴─────────────────────────────┘

SEE ALSO
       fenv.h(3HEAD), attributes(5), standards(5)

SunOS 5.10			  12 Jul 2006			fegetround(3M)
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