|
|
|
|
|
|
|
HP-UX Reference > F
fegetenv(3M)HP-UX 11i Version 2: December 2007 Update |
|
NAMEfegetenv() — get floating-point environment DESCRIPTIONThe fegetenv() function stores the current floating-point environment in the object pointed to by the argument envp. To use this function, compile either with the default -Ae option or with the -Aa and -D_HPUX_SOURCE options. Make sure your program includes <fenv.h>. For Itanium-based systems, specify +Ofenvaccess on the compiler command line or place the call to this function under the effect of an affirmative FENV_ACCESS pragma: #pragma STDC FENV_ACCESS ON If the FENV_ACCESS pragma is placed outside of any top-level declarations in a file, the pragma will apply to all declarations in the compilation following the pragma until another FENV_ACCESS pragma is encountered or until the end of the file is reached. If the FENV_ACCESS pragma is placed at the beginning of a block (compound statement), the pragma will apply until another FENV_ACCESS pragma is encountered or until the end of the block is reached. For PA-RISC, you might need to use the +Onomoveflops compiler option in order to prevent optimizations that can undermine the specified behavior of this function. Link in the math library by specifying -lm on the compiler or linker command line. For more information, see the HP-UX Floating-Point Guide. RETURN VALUE |
||||||||||||||||||||||||||||
|
|||||||||
