rsimd

commit 9ede110fda406d3138d015206253f20c9b0c90db
parent b2565b3d484e4b2aa6f0c196c5370df0d36039bc
Author: vaplv <vaplv@free.fr>
Date:   Fri, 29 Jan 2021 16:57:46 +0100

Add and test the v4i_minus function

Diffstat:
M
src/sse/ssei.h
 | 
6
++++++
M
src/test_v4i.c
 | 
8
+++++++-

2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/src/sse/ssei.h b/src/sse/ssei.h
@@ -155,6 +155,12 @@ v4i_sub(const v4i_T v0, const v4i_T v1)
   return _mm_sub_epi32(v0, v1);
 }
 
+static FINLINE v4i_T
+v4i_minus(const v4i_T v)
+{
+  return v4i_add(v4i_not(v), v4i_set1(1));
+}
+
 /*******************************************************************************
  * Comparators
  ******************************************************************************/
diff --git a/src/test_v4i.c b/src/test_v4i.c
@@ -105,7 +105,7 @@ main(int argc, char** argv)
   CHK(v4i_y(k) == 1);
   CHK(v4i_z(k) == 0);
   CHK(v4i_w(k) == 0);
- 
+
   k = v4i_rshift(i, 1);
   CHK(v4i_x(k) == 16);
   CHK(v4i_y(k) == 8);
@@ -132,6 +132,12 @@ main(int argc, char** argv)
   CHK(v4i_z(k) == 0);
   CHK(v4i_w(k) == -2);
 
+  k = v4i_minus(j);
+  CHK(v4i_x(k) == -v4i_x(j));
+  CHK(v4i_y(k) == -v4i_y(j));
+  CHK(v4i_z(k) == -v4i_z(j));
+  CHK(v4i_w(k) == -v4i_w(j));
+
   k = v4i_eq(i, j);
   CHK(v4i_x(k) == (int32_t)0x00000000);
   CHK(v4i_y(k) == (int32_t)0x00000000);