diff options
Diffstat (limited to 'libc/sysdeps/i386/fpu/fenv_private.h')
| -rw-r--r-- | libc/sysdeps/i386/fpu/fenv_private.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libc/sysdeps/i386/fpu/fenv_private.h b/libc/sysdeps/i386/fpu/fenv_private.h index f33f57c39..03f4c97a9 100644 --- a/libc/sysdeps/i386/fpu/fenv_private.h +++ b/libc/sysdeps/i386/fpu/fenv_private.h @@ -77,6 +77,24 @@ libc_feholdexcept_387 (fenv_t *e) } static __always_inline void +libc_fesetround_sse (int r) +{ + unsigned int mxcsr; + asm (STMXCSR " %0" : "=m" (*&mxcsr)); + mxcsr = (mxcsr & ~0x6000) | (r << 3); + asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr)); +} + +static __always_inline void +libc_fesetround_387 (int r) +{ + fpu_control_t cw; + _FPU_GETCW (cw); + cw = (cw & ~0xc00) | r; + _FPU_SETCW (cw); +} + +static __always_inline void libc_feholdexcept_setround_sse (fenv_t *e, int r) { unsigned int mxcsr; @@ -247,6 +265,7 @@ libc_feresetround_387 (fenv_t *e) #ifdef __SSE_MATH__ # define libc_feholdexceptf libc_feholdexcept_sse +# define libc_fesetroundf libc_fesetround_sse # define libc_feholdexcept_setroundf libc_feholdexcept_setround_sse # define libc_fetestexceptf libc_fetestexcept_sse # define libc_fesetenvf libc_fesetenv_sse @@ -256,6 +275,7 @@ libc_feresetround_387 (fenv_t *e) # define libc_feresetroundf libc_feresetround_sse #else # define libc_feholdexceptf libc_feholdexcept_387 +# define libc_fesetroundf libc_fesetround_387 # define libc_feholdexcept_setroundf libc_feholdexcept_setround_387 # define libc_fetestexceptf libc_fetestexcept_387 # define libc_fesetenvf libc_fesetenv_387 @@ -267,6 +287,7 @@ libc_feresetround_387 (fenv_t *e) #ifdef __SSE2_MATH__ # define libc_feholdexcept libc_feholdexcept_sse +# define libc_fesetround libc_fesetround_sse # define libc_feholdexcept_setround libc_feholdexcept_setround_sse # define libc_fetestexcept libc_fetestexcept_sse # define libc_fesetenv libc_fesetenv_sse @@ -276,6 +297,7 @@ libc_feresetround_387 (fenv_t *e) # define libc_feresetround libc_feresetround_sse #else # define libc_feholdexcept libc_feholdexcept_387 +# define libc_fesetround libc_fesetround_387 # define libc_feholdexcept_setround libc_feholdexcept_setround_387 # define libc_fetestexcept libc_fetestexcept_387 # define libc_fesetenv libc_fesetenv_387 @@ -286,6 +308,7 @@ libc_feresetround_387 (fenv_t *e) #endif /* __SSE2_MATH__ */ #define libc_feholdexceptl libc_feholdexcept_387 +#define libc_fesetroundl libc_fesetround_387 #define libc_feholdexcept_setroundl libc_feholdexcept_setround_387 #define libc_fetestexceptl libc_fetestexcept_387 #define libc_fesetenvl libc_fesetenv_387 |