func distsq(x, y []simd.I32x4) int32 {
if len(x) != len(y) {
return -1
}
n := len(x)
dist := int32(math.MaxInt32)
for i := 0; i < n; i++ {
for j := 0; j < n; j++ {
if i == j {
continue
}
dx := simd.SubI32x4(x[j], x[i])
dy := simd.SubI32x4(y[j], y[i])
sqX := simd.MulI32x4(dx, dx)
sqY := simd.MulI32x4(dy, dy)
sqDist := simd.AddI32x4(sqX, sqY)
if sqDist[0] < dist {
dist = sqDist[0]
}
if sqDist[1] < dist {
dist = sqDist[1]
}
if sqDist[2] < dist {
dist = sqDist[2]
}
if sqDist[3] < dist {
dist = sqDist[3]
}
}
}
return dist
}
func regression1Simd(x, y []simd.I32x4) int32 {
if len(x) != len(y) {
return -1
}
dist := int32(math.MaxInt32)
i := 0
j := 1
dx := simd.SubI32x4(x[j], x[i])
dy := simd.SubI32x4(y[j], y[i])
sqX := simd.MulI32x4(dx, dx)
sqY := simd.MulI32x4(dy, dy)
sqDist := simd.AddI32x4(sqX, sqY)
dy2 := simd.SubI32x4(sqX, sqY)
dist = sqDist[0] + dy2[2]
return dist
}
func regspillsRef(x, y []simd.I32x4) int32 {
if len(x) != len(y) {
return -1
}
dist := int32(math.MaxInt32)
i := 0
j := 1
dx := simd.SubI32x4(x[j], x[i])
dy := simd.SubI32x4(y[j], y[i])
sqX := simd.MulI32x4(dx, dx)
sqY := simd.MulI32x4(dy, dy)
sqDist := simd.AddI32x4(sqX, sqY)
dx2 := simd.SubI32x4(dx, dy)
dy2 := simd.SubI32x4(sqX, sqY)
sqX2 := simd.MulI32x4(dx2, dx2)
sqY2 := simd.MulI32x4(dy2, dy2)
sqDist2 := simd.AddI32x4(sqX2, sqY2)
dx3 := simd.SubI32x4(dx2, dy2)
dy3 := simd.SubI32x4(sqX2, sqY2)
sqX3 := simd.MulI32x4(dx3, dx3)
sqY3 := simd.MulI32x4(dy3, dy3)
sqDist3 := simd.AddI32x4(sqX3, sqY3)
t := dx[0] + dx[1] + dx[2] + dx[3] +
dx2[0] + dx2[1] + dx2[2] + dx2[3] +
dx3[0] + dx3[1] + dx3[2] + dx3[3]
v := dy[0] + dy[1] + dy[2] + dy[3] +
dy2[0] + dy2[1] + dy2[2] + dy2[3] +
dy3[0] + dy3[1] + dy3[2] + dy3[3]
dist = t + v + sqDist[0] + sqDist2[1] + sqDist3[2]
return dist
}
func subi32x4(x, y simd.I32x4) simd.I32x4 { return simd.SubI32x4(x, y) }
func main() {
count := 0
rand.Seed(42)
errors := 0
for i := -63; i <= 63; i++ {
a := int(0)
if i < 0 {
a = -1 << uint(-i)
} else {
a = 1<<uint(i) - 1
}
for j := -63; j <= 63; j++ {
count++
b := int(0)
if j < 0 {
b = -1 << uint(-j)
} else {
b = 1<<uint(j) - 1
}
shift := uint8(j)
var xI32x4 simd.I32x4
var yI32x4 simd.I32x4
var xF32x4 simd.F32x4
var yF32x4 simd.F32x4
for idx := 0; idx < 4; idx++ {
abs_a := a
if abs_a == math.MinInt64 || abs_a == 0 {
abs_a = 64
}
if abs_a < 0 {
abs_a = -abs_a
}
abs_b := b
if abs_b == math.MinInt64 || abs_b == 0 {
abs_b = 64
}
if abs_b < 0 {
abs_b = -abs_b
}
xI32x4[idx] = int32(rand.Intn(abs_a))
yI32x4[idx] = int32(rand.Intn(abs_b))
xF32x4[idx] = rand.Float32()
yF32x4[idx] = rand.Float32()
}
if addi32x4(xI32x4, yI32x4) != simd.AddI32x4(xI32x4, yI32x4) {
fmt.Printf("addi32x4(%v, %v)\n", xI32x4, yI32x4)
fmt.Println("x:", xI32x4)
fmt.Println("y:", yI32x4)
fmt.Println("s(xI32x4, yI32x4):", addi32x4(xI32x4, yI32x4))
fmt.Println(" (xI32x4, yI32x4):", simd.AddI32x4(xI32x4, yI32x4))
errors++
}
if subi32x4(xI32x4, yI32x4) != simd.SubI32x4(xI32x4, yI32x4) {
fmt.Printf("subi32x4(%v, %v)\n", xI32x4, yI32x4)
fmt.Println("x:", xI32x4)
fmt.Println("y:", yI32x4)
fmt.Println("s:", subi32x4(xI32x4, yI32x4))
fmt.Println(" :", simd.SubI32x4(xI32x4, yI32x4))
errors++
}
if muli32x4(xI32x4, yI32x4) != simd.MulI32x4(xI32x4, yI32x4) {
fmt.Printf("muli32x4(%v, %v)\n", xI32x4, yI32x4)
fmt.Println("x:", xI32x4)
fmt.Println("y:", yI32x4)
fmt.Println("s:", muli32x4(xI32x4, yI32x4))
fmt.Println(" :", simd.MulI32x4(xI32x4, yI32x4))
errors++
}
if shli32x4(xI32x4, shift) != simd.ShlI32x4(xI32x4, shift) {
fmt.Printf("shli32x4(%v, %v)\n", xI32x4, shift)
fmt.Println("x:", xI32x4)
fmt.Println("shift:", shift)
fmt.Println("s:", shli32x4(xI32x4, shift))
fmt.Println(" :", simd.ShlI32x4(xI32x4, shift))
errors++
}
if shri32x4(xI32x4, shift) != simd.ShrI32x4(xI32x4, shift) {
fmt.Printf("shri32x4(%v, %v)\n", xI32x4, shift)
fmt.Println("x:", xI32x4)
fmt.Println("shift:", shift)
fmt.Println("s:", shri32x4(xI32x4, shift))
fmt.Println(" :", simd.ShrI32x4(xI32x4, shift))
errors++
}
if addf32x4(xF32x4, yF32x4) != simd.AddF32x4(xF32x4, yF32x4) {
fmt.Printf("addf32x4(%v, %v)\n", xF32x4, yF32x4)
fmt.Println("x:", xF32x4)
fmt.Println("y:", yF32x4)
fmt.Println("s:", addf32x4(xF32x4, yF32x4))
fmt.Println(" :", simd.AddF32x4(xF32x4, yF32x4))
errors++
}
if subf32x4(xF32x4, yF32x4) != simd.SubF32x4(xF32x4, yF32x4) {
fmt.Printf("subf32x4(%v, %v)\n", xF32x4, yF32x4)
fmt.Println("x:", xF32x4)
fmt.Println("y:", yF32x4)
fmt.Println("s:", subf32x4(xF32x4, yF32x4))
fmt.Println(" :", simd.SubF32x4(xF32x4, yF32x4))
errors++
}
if mulf32x4(xF32x4, yF32x4) != simd.MulF32x4(xF32x4, yF32x4) {
fmt.Printf("mulf32x4(%v, %v)\n", xF32x4, yF32x4)
fmt.Println("x:", xF32x4)
fmt.Println("y:", yF32x4)
fmt.Println("s:", mulf32x4(xF32x4, yF32x4))
fmt.Println(" :", simd.MulF32x4(xF32x4, yF32x4))
}
if divf32x4(xF32x4, yF32x4) != simd.DivF32x4(xF32x4, yF32x4) {
fmt.Printf("divf32x4(%v, %v)\n", xF32x4, yF32x4)
fmt.Println("x:", xF32x4)
fmt.Println("y:", yF32x4)
fmt.Println("s:", divf32x4(xF32x4, yF32x4))
fmt.Println(" :", simd.DivF32x4(xF32x4, yF32x4))
errors++
}
}
}
fmt.Printf("Done, errors: %d\n", errors)
}