diff options
Diffstat (limited to 'manual')
| -rw-r--r-- | manual/.cvsignore | 4 | ||||
| -rw-r--r-- | manual/arith.texi | 45 | ||||
| -rw-r--r-- | manual/creature.texi | 2 |
3 files changed, 43 insertions, 8 deletions
diff --git a/manual/.cvsignore b/manual/.cvsignore index 1d23d99cd2..268ddb653d 100644 --- a/manual/.cvsignore +++ b/manual/.cvsignore @@ -1,5 +1,5 @@ *.d *.o *.so *.po *.go stamp.* *.stamp *.ustamp *.udeps -*.gz *.Z *.tar *.tgz +*.gz *.Z *.tar *.tgz *.bz2 =* TODO COPYING* AUTHORS copyr-* copying.* glibc-* @@ -10,3 +10,5 @@ glibc-* texis top-menu.texi chapters.texi summary.texi stamp-* distinfo dir-add.texinfo + +libm-err.texi diff --git a/manual/arith.texi b/manual/arith.texi index 0dae46c99b..51d67a99d1 100644 --- a/manual/arith.texi +++ b/manual/arith.texi @@ -476,9 +476,27 @@ and save and restore the set of exceptions flagged. @comment fenv.h @comment ISO -@deftypefun void feclearexcept (int @var{excepts}) +@deftypefun int feclearexcept (int @var{excepts}) This function clears all of the supported exception flags indicated by @var{excepts}. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. +@end deftypefun + +@comment fenv.h +@comment ISO +@deftypefun int feraiseexcept (int @var{excepts}) +This function raises the supported exceptions indicated by +@var{excepts}. If more than one exception bit in @var{excepts} is set +the order in which the exceptions are raised is undefined except that +overflow (@code{FE_OVERFLOW}) or underflow (@code{FE_UNDERFLOW}) are +raised before inexact (@code{FE_INEXACT}). Whether for overflow or +underflow the inexact exception is also raised is also implementation +dependent. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. @end deftypefun @comment fenv.h @@ -519,19 +537,25 @@ following functions: @comment fenv.h @comment ISO -@deftypefun void fegetexceptflag (fexcept_t *@var{flagp}, int @var{excepts}) +@deftypefun int fegetexceptflag (fexcept_t *@var{flagp}, int @var{excepts}) This function stores in the variable pointed to by @var{flagp} an implementation-defined value representing the current setting of the exception flags indicated by @var{excepts}. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. @end deftypefun @comment fenv.h @comment ISO -@deftypefun void fesetexceptflag (const fexcept_t *@var{flagp}, int +@deftypefun int fesetexceptflag (const fexcept_t *@var{flagp}, int @var{excepts}) This function restores the flags for the exceptions indicated by @var{excepts} to the values stored in the variable pointed to by @var{flagp}. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. @end deftypefun Note that the value stored in @code{fexcept_t} bears no resemblance to @@ -736,9 +760,12 @@ To save the state of the FPU, use one of these functions: @comment fenv.h @comment ISO -@deftypefun void fegetenv (fenv_t *@var{envp}) +@deftypefun int fegetenv (fenv_t *@var{envp}) Store the floating-point environment in the variable pointed to by @var{envp}. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. @end deftypefun @comment fenv.h @@ -780,19 +807,25 @@ functions: @comment fenv.h @comment ISO -@deftypefun void fesetenv (const fenv_t *@var{envp}) +@deftypefun int fesetenv (const fenv_t *@var{envp}) Set the floating-point environment to that described by @var{envp}. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. @end deftypefun @comment fenv.h @comment ISO -@deftypefun void feupdateenv (const fenv_t *@var{envp}) +@deftypefun int feupdateenv (const fenv_t *@var{envp}) Like @code{fesetenv}, this function sets the floating-point environment to that described by @var{envp}. However, if any exceptions were flagged in the status word before @code{feupdateenv} was called, they remain flagged after the call. In other words, after @code{feupdateenv} is called, the status word is the bitwise OR of the previous status word and the one saved in @var{envp}. + +The function returns zero in case the operation was successful, a +non-zero value otherwise. @end deftypefun @node Arithmetic Functions diff --git a/manual/creature.texi b/manual/creature.texi index 11061f9321..88478a2ef2 100644 --- a/manual/creature.texi +++ b/manual/creature.texi @@ -196,7 +196,7 @@ This macro was introduced as part of the Large File Support extension @comment (none) @comment GNU @defvr Macro _ISOC99_SOURCE -Until the revides @w{ISO C} standard is widely adopted the new features +Until the revised @w{ISO C} standard is widely adopted the new features are not automatically enabled. The GNU libc nevertheless has a complete implementation of the new standard and to enable the new features the macro @code{_ISOC99_SOURCE} should be defined. |