diff options
Diffstat (limited to 'src/vectors-4-SSE.h')
| -rw-r--r-- | src/vectors-4-SSE.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/vectors-4-SSE.h b/src/vectors-4-SSE.h index e6dc735..8319c49 100644 --- a/src/vectors-4-SSE.h +++ b/src/vectors-4-SSE.h @@ -6,6 +6,10 @@ #include <xmmintrin.h> +#ifdef __SSE4_1__ +// Intel's SSE 4.1 +# include <smmintrin.h> +#endif #ifdef __SSE4A__ // AMD's SSE 4a # include <ammintrin.h> @@ -13,6 +17,8 @@ +#define vec4_architecture "SSE" + // Vector type corresponding to CCTK_REAL #define CCTK_REAL4_VEC __m128 @@ -292,3 +298,23 @@ static const union { #define k4exp(x) K4REPL(exp,x) #define k4log(x) K4REPL(log,x) #define k4pow(x,a) K4REPL2(pow,x,a) + +// Choice [sign(x)>0 ? y : z] +#ifdef __SSE4_1__ +# define k4ifthen(x,y,z) (_mm_blendv_ps(y,z,x)) +#else +# define k4ifthen(x,y,z) \ + ({ \ + CCTK_REAL4_VEC const xx=(x_); \ + CCTK_REAL4_VEC const x=xx; \ + CCTK_REAL4_VEC const yy=(y_); \ + CCTK_REAL4_VEC const y=yy; \ + CCTK_REAL4_VEC const zz=(z_); \ + CCTK_REAL4_VEC const z=zz; \ + CCTK_REAL4_VEC const c = _mm_and_ps(x,k4sign_mask); \ + vec4_set(vec4_elt0(not vec4_elt0(c) ? y : z), \ + vec4_elt1(not vec4_elt1(c) ? y : z), \ + vec4_elt2(not vec4_elt2(c) ? y : z), \ + vec4_elt3(not vec4_elt3(c) ? y : z)); \ + }) +#endif |