S390: Use libc_fe* macros in fe* functions.

This patch updates the s390 specific functions fegetround,
fesetround, feholdexcept, fesetenv, feupdateenv, fegetexceptflag,
fetestexcept, fesetexceptflag, fetestexceptflag.
Now those functions are using the libc_fe* macros if possible.

Furthermore fegetexceptflag is now returning the exception from
dxc field shifted to the usual exception-flags.
Thus a special fetestexceptflag implementation is not needed anymore.

1 files changed, 2 insertions, 14 deletions

diff --git a/sysdeps/s390/fpu/ftestexcept.c b/sysdeps/s390/fpu/ftestexcept.c
index eabc1b65b9..ed7df8b02b 100644
--- a/sysdeps/s390/fpu/ftestexcept.c
+++ b/sysdeps/s390/fpu/ftestexcept.c
@@ -17,23 +17,11 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <fenv_libc.h>
-#include <fpu_control.h>
+#include <fenv_private.h>
 
 int
 fetestexcept (int excepts)
 {
-  fexcept_t temp, res;
-
-  /* Get current exceptions.  */
-  _FPU_GETCW (temp);
-  res = temp >> FPC_FLAGS_SHIFT;
-  if ((temp & FPC_NOT_FPU_EXCEPTION) == 0)
-    /* Bits 6, 7 of dxc-byte are zero,
-       thus bits 0-5 of dxc-byte correspond to the flag-bits.
-       Evaluate flags and last dxc-exception-code.  */
-    res |= temp >> FPC_DXC_SHIFT;
-
-  return res & excepts & FE_ALL_EXCEPT;
+  return libc_fetestexcept_s390 (excepts);
 }
 libm_hidden_def (fetestexcept)