rsimd

commit 5d4def688be05e193d9f192b753f1e70610778b8
parent 72a6b734cfb49dab51ad80ca1b73562c0b5f22a0
Author: vaplv <vaplv@free.fr>
Date:   Tue, 27 Jan 2015 13:53:23 +0100

Add and test the v4f_reduce_<min|max> functions

Diffstat:
M
src/sse/ssef.h
 | 
14
++++++++++++++
M
src/test_v4f.c
 | 
24
++++++++++++++++++++++++

2 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/src/sse/ssef.h b/src/sse/ssef.h
@@ -551,6 +551,20 @@ v4f_max(const v4f_T v0, const v4f_T v1)
   return _mm_max_ps(v0, v1);
 }
 
+static FINLINE v4f_T
+v4f_reduce_min(const v4f_T v)
+{
+  const v4f_T tmp = v4f_min(v4f_yxwz(v), v);
+  return v4f_min(v4f_zwxy(tmp), tmp);
+}
+
+static FINLINE v4f_T
+v4f_reduce_max(const v4f_T v)
+{
+  const v4f_T tmp = v4f_max(v4f_yxwz(v), v);
+  return v4f_max(v4f_zwxy(tmp), tmp);
+}
+
 /*******************************************************************************
  * Miscellaneous
  ******************************************************************************/
diff --git a/src/test_v4f.c b/src/test_v4f.c
@@ -487,6 +487,30 @@ main(int argc, char** argv)
   CHECK(v4f_z(k), 3.f);
   CHECK(v4f_w(k), 6.f);
 
+  k = v4f_reduce_min(i);
+  CHECK(v4f_x(k), 1.f);
+  CHECK(v4f_y(k), 1.f);
+  CHECK(v4f_z(k), 1.f);
+  CHECK(v4f_w(k), 1.f);
+
+  k = v4f_reduce_min(j);
+  CHECK(v4f_x(k), -4.f);
+  CHECK(v4f_y(k), -4.f);
+  CHECK(v4f_z(k), -4.f);
+  CHECK(v4f_w(k), -4.f);
+
+  k = v4f_reduce_max(i);
+  CHECK(v4f_x(k), 4.f);
+  CHECK(v4f_y(k), 4.f);
+  CHECK(v4f_z(k), 4.f);
+  CHECK(v4f_w(k), 4.f);
+
+  k = v4f_reduce_max(j);
+  CHECK(v4f_x(k), 6.f);
+  CHECK(v4f_y(k), 6.f);
+  CHECK(v4f_z(k), 6.f);
+  CHECK(v4f_w(k), 6.f);
+
   l = v4f_to_v4i(j);
   CHECK(v4i_x(l), -2);
   CHECK(v4i_y(l), -4);