fegetround man page on SmartOS

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

       fegetround, fesetround - get and set current rounding direction

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

       int fegetround(void);

       int fesetround(int round);

       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.

       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.

       No errors are defined.

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

       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);
	       /* ... */
	       /* ... */

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

       │      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
       │Interface Stability	     │Standard			   │
       │MT-Level		     │MT-Safe			   │

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

SunOS 5.11			  12 Jul 2006			fegetround(3M)

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