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//
// Test_v3dot.cpp
// BulletTest
//
// Copyright (c) 2011 Apple Inc.
//
#include "LinearMath/btScalar.h"
#if defined(BT_USE_SSE_IN_API) || defined(BT_USE_NEON)
#include "Test_dot3.h"
#include "vector.h"
#include "Utils.h"
#include "main.h"
#include <math.h>
#include <string.h>
#include <LinearMath/btVector3.h>
// reference code for testing purposes
static btVector3 dot3_ref(const btVector3 &, const btVector3 &, const btVector3 &, const btVector3 &);
static btVector3 dot3_ref(const btVector3 &v, const btVector3 &v1, const btVector3 &v2, const btVector3 &v3)
{
return btVector3(v.dot(v1), v.dot(v2), v.dot(v3));
}
/*
SIMD_FORCE_INLINE int operator!=(const btVector3 &s, const btVector3 &v)
{
#ifdef __SSE__
__m128 test = _mm_cmpneq_ps( s.mVec128, v.mVec128 );
return (_mm_movemask_ps( test ) & 7) != 0;
#elif defined __ARM_NEON_H
uint32x4_t test = vandq_u32( vceqq_f32( s.mVec128, v.mVec128 ), (uint32x4_t){-1,-1,-1,0});
uint32x2_t t = vpadd_u32( vget_low_u32(test), vget_high_u32(test));
t = vpadd_u32(t, t);
return -3 != (int32_t) vget_lane_u32(t, 0);
#else
return s.m_floats[0] != v.m_floats[0] ||
s.m_floats[1] != v.m_floats[1] ||
s.m_floats[2] != v.m_floats[2];
#endif
}
*/
#define LOOPCOUNT 1000
#define NUM_CYCLES 10000
int Test_dot3(void)
{
btVector3 v, v1, v2, v3;
#define DATA_SIZE 1024
btVector3 vec3_arr[DATA_SIZE];
btVector3 vec3_arr1[DATA_SIZE];
btVector3 vec3_arr2[DATA_SIZE];
btVector3 vec3_arr3[DATA_SIZE];
btVector3 res_arr[DATA_SIZE];
uint64_t scalarTime;
uint64_t vectorTime;
size_t j, k;
btVector3 correct, test;
for (k = 0; k < DATA_SIZE; k++)
{
vec3_arr[k] = btVector3(btAssign128(RANDF, RANDF, RANDF, BT_NAN));
vec3_arr1[k] = btVector3(btAssign128(RANDF, RANDF, RANDF, BT_NAN));
vec3_arr2[k] = btVector3(btAssign128(RANDF, RANDF, RANDF, BT_NAN));
vec3_arr3[k] = btVector3(btAssign128(RANDF, RANDF, RANDF, BT_NAN));
correct = dot3_ref(vec3_arr[k], vec3_arr1[k], vec3_arr2[k], vec3_arr3[k]);
test = vec3_arr[k].dot3(vec3_arr1[k], vec3_arr2[k], vec3_arr3[k]);
if (correct != test)
{
vlog("Error (%ld) - dot3 result error! *{%a, %a, %a, %a} != {%a, %a, %a, %a} \n", k,
correct.x(), correct.y(), correct.z(), correct.w(),
test.x(), test.y(), test.z(), test.w());
return 1;
}
}
{
uint64_t startTime, bestTime, currentTime;
bestTime = -1LL;
scalarTime = 0;
for (j = 0; j < NUM_CYCLES; j++)
{
startTime = ReadTicks();
for (k = 0; k + 4 <= LOOPCOUNT; k += 4)
{
size_t k32 = (k & (DATA_SIZE - 1));
res_arr[k32] = dot3_ref(vec3_arr[k32], vec3_arr1[k32], vec3_arr2[k32], vec3_arr3[k32]);
k32++;
res_arr[k32] = dot3_ref(vec3_arr[k32], vec3_arr1[k32], vec3_arr2[k32], vec3_arr3[k32]);
k32++;
res_arr[k32] = dot3_ref(vec3_arr[k32], vec3_arr1[k32], vec3_arr2[k32], vec3_arr3[k32]);
k32++;
res_arr[k32] = dot3_ref(vec3_arr[k32], vec3_arr1[k32], vec3_arr2[k32], vec3_arr3[k32]);
}
currentTime = ReadTicks() - startTime;
scalarTime += currentTime;
if (currentTime < bestTime)
bestTime = currentTime;
}
if (0 == gReportAverageTimes)
scalarTime = bestTime;
else
scalarTime /= NUM_CYCLES;
}
{
uint64_t startTime, bestTime, currentTime;
bestTime = -1LL;
vectorTime = 0;
for (j = 0; j < NUM_CYCLES; j++)
{
startTime = ReadTicks();
for (k = 0; k + 4 <= LOOPCOUNT; k += 4)
{
size_t k32 = (k & (DATA_SIZE - 1));
res_arr[k32] = vec3_arr[k32].dot3(vec3_arr1[k32], vec3_arr2[k32], vec3_arr3[k32]);
k32++;
res_arr[k32] = vec3_arr[k32].dot3(vec3_arr1[k32], vec3_arr2[k32], vec3_arr3[k32]);
k32++;
res_arr[k32] = vec3_arr[k32].dot3(vec3_arr1[k32], vec3_arr2[k32], vec3_arr3[k32]);
k32++;
res_arr[k32] = vec3_arr[k32].dot3(vec3_arr1[k32], vec3_arr2[k32], vec3_arr3[k32]);
}
currentTime = ReadTicks() - startTime;
vectorTime += currentTime;
if (currentTime < bestTime)
bestTime = currentTime;
}
if (0 == gReportAverageTimes)
vectorTime = bestTime;
else
vectorTime /= NUM_CYCLES;
}
vlog("Timing:\n");
vlog(" \t scalar\t vector\n");
vlog(" \t%10.4f\t%10.4f\n", TicksToCycles(scalarTime) / LOOPCOUNT, TicksToCycles(vectorTime) / LOOPCOUNT);
return 0;
}
#endif //BT_USE_SSE
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