diff options
Diffstat (limited to 'sysdeps/i386/fpu/bits/fenv.h')
| -rw-r--r-- | sysdeps/i386/fpu/bits/fenv.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/bits/fenv.h b/sysdeps/i386/fpu/bits/fenv.h index e11e83f..8c00771 100644 --- a/sysdeps/i386/fpu/bits/fenv.h +++ b/sysdeps/i386/fpu/bits/fenv.h @@ -90,7 +90,7 @@ fenv_t; #endif -#if defined __SSE_MATH__ && defined __USE_EXTERN_INLINES +#ifdef __USE_EXTERN_INLINES __BEGIN_DECLS /* Optimized versions. */ @@ -106,7 +106,12 @@ __NTH (feraiseexcept (int __excepts)) /* One example of a invalid operation is 0.0 / 0.0. */ float __f = 0.0; +# ifdef __SSE_MATH__ __asm__ __volatile__ ("divss %0, %0 " : : "x" (__f)); +# else + __asm__ __volatile__ ("fdiv %%st, %%st(0); fwait" + : "=t" (__f) : "0" (__f)); +# endif (void) &__f; } if ((FE_DIVBYZERO & __excepts) != 0) @@ -114,7 +119,12 @@ __NTH (feraiseexcept (int __excepts)) float __f = 1.0; float __g = 0.0; +# ifdef __SSE_MATH__ __asm__ __volatile__ ("divss %1, %0" : : "x" (__f), "x" (__g)); +# else + __asm__ __volatile__ ("fdivp %%st(1), %%st; fwait" + : "=t" (__f) : "0" (__f), "u" (__g) : "st(1)"); +# endif (void) &__f; } |