02-16-2006
i dont exactly need it... a friend of mine told me that it could be done with the pragma directive...
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LEARN ABOUT HPUX
fesetenv
fesetenv(3M) fesetenv(3M)
NAME
fesetenv() - set floating-point environment
SYNOPSIS
HP Integrity Server Only
PA-RISC Only
DESCRIPTION
The function establishes the floating-point environment represented by the object pointed to by envp. The argument envp must point to an
object set by a call to or or equal the macro
Note that merely installs the state of the floating-point exception flags represented through its argument, and does not raise these float-
ing-point exceptions (hence no traps will be taken).
USAGE
To use this function, compile either with the default option or with the and options. Make sure your program includes
For Integrity servers, specify on the compiler command line or place the call to this function under the effect of an affirmative pragma:
If the pragma is placed outside of any top-level declarations in a file, the pragma will apply to all declarations in the compilation fol-
lowing the pragma until another pragma is encountered or until the end of the file is reached.
If the pragma is placed at the beginning of a block (compound statement), the pragma will apply until another pragma is encountered or
until the end of the block is reached.
For PA-RISC, you might need to use the compiler option in order to prevent optimizations that can undermine the specified behavior of this
function.
Link in the math library by specifying on the compiler or linker command line.
For more information, see the at the following site:
RETURN VALUE
Integrity Server Only
This function always returns 0, indicating that the environment was successfully established.
PA-RISC Only
None.
ERRORS
No errors are defined.
EXAMPLES
Store the current floating-point environment, continue on exceptions, and then restore the previous environment without raising the accumu-
lated floating-point exceptions.
Restore the default environment:
SEE ALSO
fegetenv(3M), feholdexcept(3M), feupdateenv(3M), fenv(5).
STANDARDS CONFORMANCE
: ISO/IEC C99 (including Annex F, "IEC 60559 floating-point arithmetic")
fesetenv(3M)