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fesetexceptflag(3m) [hpux man page]

fesetexceptflag(3M)													       fesetexceptflag(3M)

NAME
fesetexceptflag() - set floating-point exception flags SYNOPSIS
HP Integrity Server Only PA-RISC Only DESCRIPTION
The function sets the status for the floating-point exception flags indicated by the argument excepts to the states stored in the object pointed to by flagp. The value of *flagp must have been set by a previous call to whose second argument represented at least those float- ing-point exceptions represented by the argument excepts; otherwise, the effect on the indicated floating-point exception flags is unde- fined. This function does not raise exceptions, but only sets the state of the flags (hence no traps will be taken). The excepts argument can be constructed as a bitwise OR of the floating-point exception macros: and represents all the floating-point exceptions. 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 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 all the specified flags were successfully set to the appropriate state. PA-RISC Only None. ERRORS
No errors are defined. EXAMPLES
Use to save the current state of two floating-point exception flags. Later, use to restore the saved state. SEE ALSO
feclearexcept(3M), fegetexceptflag(3M), fegettrapenable(3M), feraiseexcept(3M), fesettrapenable(3M), fetestexcept(3M), fenv(5). STANDARDS CONFORMANCE
: ISO/IEC C99 (including Annex F, "IEC 60559 floating-point arithmetic") fesetexceptflag(3M)

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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)

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