opensolaris man page for fex_merge_flags

fex_merge_flags(3M)					  Mathematical Library Functions				       fex_merge_flags(3M)

NAME
       fex_merge_flags - manage the floating point environment

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

       void fex_merge_flags(const fenv_t *envp);

DESCRIPTION
       The fex_merge_flags() function copies into the current environment those exception flags that are set in the environment represented by the
       object pointed to by envp.  The argument envp must point to an object set by a call to feholdexcept(3M) or fegetenv(3M)	or  equal  to  the
       macro FE_DFL_ENV.  The fex_merge_flags() function does not raise any exceptions, but only sets its flags.

RETURN VALUES
       The fex_merge_flags function does not return a value.

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

       +-----------------------------------------------------------+
       |ATTRIBUTE TYPE		      ATTRIBUTE VALUE		   |
       |Availability		      SUNWlibms, SUNWlmsx	   |
       |Interface Stability	      Stable			   |
       |MT-Level		      MT-Safe			   |
       +-----------------------------------------------------------+

SEE ALSO
       feclearexcept(3M), fegetenv(3M), fesetround(3M), fesetprec(3M), fex_set_handling(3M), fex_set_log(3M), attributes(5)

       Numerical Computation Guide

NOTES
       In a multithreaded program, the fex_merge_flags() function affects the floating point environment only for the calling thread.

       The  fex_merge_flags()  function automatically installs and deinstalls SIGFPE handlers and sets and clears the trap enable mode bits in the
       floating point status register as needed.  If a program uses these functions and attempts to install a SIGFPE handler or control  the  trap
       enable mode bits independently, the resulting behavior is not defined.

SunOS 5.11							    12 Jul 2006 					       fex_merge_flags(3M)