Imported healpix tree

external/healpix/c_utils/sse_utils.h

@@ -0,0 +1,137 @@
+/*
+ *  This file is part of libc_utils.
+ *
+ *  libc_utils is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  libc_utils is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with libc_utils; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ *  libc_utils is being developed at the Max-Planck-Institut fuer Astrophysik
+ *  and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
+ *  (DLR).
+ */
+
+/*! \file sse_utils.h
+ *  SSE/SSE2/SSE3-related functionality
+ *
+ *  Copyright (C) 2010 Max-Planck-Society
+ *  \author Martin Reinecke
+ */
+
+#ifndef PLANCK_SSE_UTILS_H
+#define PLANCK_SSE_UTILS_H
+
+#ifndef PLANCK_DISABLE_SSE
+
+#if (defined(__SSE__))
+
+#include <xmmintrin.h>
+
+#define PLANCK_HAVE_SSE
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef __m128 v4sf; /* vector of 4 floats (SSE1) */
+
+typedef union {
+  float f[4];
+  v4sf v;
+} V4SF;
+
+static inline v4sf build_v4sf (float a, float b, float c, float d)
+  { return _mm_set_ps(d,c,b,a); }
+static inline void read_v4sf (v4sf v, float *a, float *b, float *c, float *d)
+  {
+  V4SF tmp;
+  tmp.v = v;
+  if (a) *a=tmp.f[0];
+  if (b) *b=tmp.f[1];
+  if (c) *c=tmp.f[2];
+  if (d) *d=tmp.f[3];
+  }
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#if (defined(__SSE2__))
+
+#include <emmintrin.h>
+
+#define PLANCK_HAVE_SSE2
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef __m128d v2df; /* vector of 2 doubles (SSE2) */
+
+typedef union {
+  double d[2];
+  v2df v;
+} V2DF;
+
+typedef struct {
+  v2df a,b;
+} v2df2;
+typedef struct {
+  V2DF a,b;
+} V2DF2;
+
+#define V2DF_SIGNMASK \
+  _mm_castsi128_pd(_mm_set_epi32(-0x80000000,0,-0x80000000,0))
+
+static inline v2df build_v2df (double a, double b)
+  { return _mm_set_pd(b,a); }
+static inline void read_v2df (v2df v, double *a, double *b)
+  { _mm_store_sd(a,v); _mm_storeh_pd(b,v); }
+
+static inline int v2df_any_gt (v2df a, v2df b)
+  {
+  return (_mm_movemask_pd(_mm_cmpgt_pd(_mm_andnot_pd(V2DF_SIGNMASK,a),b))!=0);
+  }
+static inline int v2df_all_ge (v2df a, v2df b)
+  {
+  return (_mm_movemask_pd(_mm_cmplt_pd(_mm_andnot_pd(V2DF_SIGNMASK,a),b))==0);
+  }
+static inline V2DF to_V2DF (v2df x)
+  { V2DF X; X.v=x; return X; }
+static inline V2DF2 to_V2DF2 (v2df2 x)
+  { V2DF2 X; X.a.v=x.a; X.b.v=x.b; return X; }
+static inline v2df2 to_v2df2 (V2DF2 X)
+  { v2df2 x; x.a=X.a.v; x.b=X.b.v; return x; }
+static inline v2df2 zero_v2df2(void)
+  { v2df2 x; x.a=x.b=_mm_setzero_pd(); return x; }
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#if (defined(__SSE3__))
+
+#include <pmmintrin.h>
+
+#define PLANCK_HAVE_SSE3
+
+#endif
+
+#endif
+
+#endif