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// Copyright ©2015 The Gonum Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package f32_test
import (
"testing"
. "gonum.org/v1/gonum/internal/asm/f32"
)
var tests = []struct {
incX, incY, incDst uintptr
ix, iy, idst uintptr
a float32
dst, x, y []float32
ex []float32
}{
{incX: 2, incY: 2, incDst: 3, ix: 0, iy: 0, idst: 0,
a: 3,
dst: []float32{5},
x: []float32{2},
y: []float32{1},
ex: []float32{7}},
{incX: 2, incY: 2, incDst: 3, ix: 0, iy: 0, idst: 0,
a: 5,
dst: []float32{0, 0, 0},
x: []float32{0, 0, 0},
y: []float32{1, 1, 1},
ex: []float32{1, 1, 1}},
{incX: 2, incY: 2, incDst: 3, ix: 0, iy: 0, idst: 0,
a: 5,
dst: []float32{0, 0, 0},
x: []float32{0, 0},
y: []float32{1, 1, 1},
ex: []float32{1, 1}},
{incX: 2, incY: 2, incDst: 3, ix: 0, iy: 0, idst: 0,
a: -1,
dst: []float32{-1, -1, -1},
x: []float32{1, 1, 1},
y: []float32{1, 2, 1},
ex: []float32{0, 1, 0}},
{incX: 2, incY: 2, incDst: 3, ix: 0, iy: 0, idst: 0,
a: -1,
dst: []float32{1, 1, 1},
x: []float32{1, 2, 1},
y: []float32{-1, -2, -1},
ex: []float32{-2, -4, -2}},
{incX: 2, incY: 2, incDst: 3, ix: 0, iy: 0, idst: 0,
a: 2.5,
dst: []float32{1, 1, 1, 1, 1},
x: []float32{1, 2, 3, 2, 1},
y: []float32{0, 0, 0, 0, 0},
ex: []float32{2.5, 5, 7.5, 5, 2.5}},
{incX: 2, incY: 2, incDst: 3, ix: 0, iy: 0, idst: 0, // Run big test twice, once aligned once unaligned.
a: 16.5,
dst: make([]float32, 20),
x: []float32{.5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5, .5},
y: []float32{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
ex: []float32{9.25, 10.25, 11.25, 12.25, 13.25, 14.25, 15.25, 16.25, 17.25, 18.25, 9.25, 10.25, 11.25, 12.25, 13.25, 14.25, 15.25, 16.25, 17.25, 18.25}},
{incX: 2, incY: 2, incDst: 3, ix: 0, iy: 0, idst: 0,
a: 16.5,
dst: make([]float32, 10),
x: []float32{.5, .5, .5, .5, .5, .5, .5, .5, .5, .5},
y: []float32{1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
ex: []float32{9.25, 10.25, 11.25, 12.25, 13.25, 14.25, 15.25, 16.25, 17.25, 18.25}},
}
func TestAxpyUnitary(t *testing.T) {
for j, v := range tests {
gdLn := 4 + j%2
v.x, v.y = guardVector(v.x, 1, gdLn), guardVector(v.y, 1, gdLn)
x, y := v.x[gdLn:len(v.x)-gdLn], v.y[gdLn:len(v.y)-gdLn]
AxpyUnitary(v.a, x, y)
for i := range v.ex {
if !same(y[i], v.ex[i]) {
t.Error("Test", j, "Unexpected result at", i, "Got:", int(y[i]), "Expected:", v.ex[i])
}
}
if !isValidGuard(v.x, 1, gdLn) {
t.Error("Test", j, "Guard violated in x vector", v.x[:gdLn], v.x[len(v.x)-gdLn:])
}
if !isValidGuard(v.y, 1, gdLn) {
t.Error("Test", j, "Guard violated in y vector", v.y[:gdLn], v.y[len(v.x)-gdLn:])
}
}
}
func TestAxpyUnitaryTo(t *testing.T) {
for j, v := range tests {
gdLn := 4 + j%2
v.x, v.y = guardVector(v.x, 1, gdLn), guardVector(v.y, 1, gdLn)
v.dst = guardVector(v.dst, 0, gdLn)
x, y := v.x[gdLn:len(v.x)-gdLn], v.y[gdLn:len(v.y)-gdLn]
dst := v.dst[gdLn : len(v.dst)-gdLn]
AxpyUnitaryTo(dst, v.a, x, y)
for i := range v.ex {
if !same(v.ex[i], dst[i]) {
t.Error("Test", j, "Unexpected result at", i, "Got:", dst[i], "Expected:", v.ex[i])
}
}
if !isValidGuard(v.x, 1, gdLn) {
t.Error("Test", j, "Guard violated in x vector", v.x[:gdLn], v.x[len(v.x)-gdLn:])
}
if !isValidGuard(v.y, 1, gdLn) {
t.Error("Test", j, "Guard violated in y vector", v.y[:gdLn], v.y[len(v.x)-gdLn:])
}
if !isValidGuard(v.dst, 0, gdLn) {
t.Error("Test", j, "Guard violated in x vector", v.x[:gdLn], v.x[len(v.x)-gdLn:])
}
}
}
func TestAxpyInc(t *testing.T) {
for j, v := range tests {
gdLn := 4 + j%2
v.x, v.y = guardIncVector(v.x, 1, int(v.incX), gdLn), guardIncVector(v.y, 1, int(v.incY), gdLn)
x, y := v.x[gdLn:len(v.x)-gdLn], v.y[gdLn:len(v.y)-gdLn]
AxpyInc(v.a, x, y, uintptr(len(v.ex)), v.incX, v.incY, v.ix, v.iy)
for i := range v.ex {
if !same(y[i*int(v.incY)], v.ex[i]) {
t.Error("Test", j, "Unexpected result at", i, "Got:", y[i*int(v.incY)], "Expected:", v.ex[i])
t.Error("Result:", y)
t.Error("Expect:", v.ex)
}
}
checkValidIncGuard(t, v.x, 1, int(v.incX), gdLn)
checkValidIncGuard(t, v.y, 1, int(v.incY), gdLn)
}
}
func TestAxpyIncTo(t *testing.T) {
for j, v := range tests {
gdLn := 4 + j%2
v.x, v.y = guardIncVector(v.x, 1, int(v.incX), gdLn), guardIncVector(v.y, 1, int(v.incY), gdLn)
v.dst = guardIncVector(v.dst, 0, int(v.incDst), gdLn)
x, y := v.x[gdLn:len(v.x)-gdLn], v.y[gdLn:len(v.y)-gdLn]
dst := v.dst[gdLn : len(v.dst)-gdLn]
AxpyIncTo(dst, v.incDst, v.idst, v.a, x, y, uintptr(len(v.ex)), v.incX, v.incY, v.ix, v.iy)
for i := range v.ex {
if !same(dst[i*int(v.incDst)], v.ex[i]) {
t.Error("Test", j, "Unexpected result at", i, "Got:", dst[i*int(v.incDst)], "Expected:", v.ex[i])
t.Error(v.dst)
t.Error(v.ex)
}
}
checkValidIncGuard(t, v.x, 1, int(v.incX), gdLn)
checkValidIncGuard(t, v.y, 1, int(v.incY), gdLn)
checkValidIncGuard(t, v.dst, 0, int(v.incDst), gdLn)
}
}
func TestSum(t *testing.T) {
var srcGd float32 = -1
for j, v := range []struct {
src []float32
expect float32
}{
{
src: []float32{},
expect: 0,
},
{
src: []float32{1},
expect: 1,
},
{
src: []float32{nan},
expect: nan,
},
{
src: []float32{1, 2, 3},
expect: 6,
},
{
src: []float32{1, -4, 3},
expect: 0,
},
{
src: []float32{1, 2, 3, 4},
expect: 10,
},
{
src: []float32{1, 1, nan, 1, 1},
expect: nan,
},
{
src: []float32{inf, 4, nan, -inf, 9},
expect: nan,
},
{
src: []float32{1, 1, 1, 1, 9, 1, 1, 1, 2, 1, 1, 1, 1, 1, 5, 1},
expect: 29,
},
{
src: []float32{1, 1, 1, 1, 9, 1, 1, 1, 2, 1, 1, 1, 1, 1, 5, 11, 1, 1, 1, 9, 1, 1, 1, 2, 1, 1, 1, 1, 1, 5, 1},
expect: 67,
},
} {
for _, i := range [4]int{0, 1, 2, 3} {
gdLn := 4 + j%4 + i
gsrc := guardVector(v.src, srcGd, gdLn)
src := gsrc[gdLn : len(gsrc)-gdLn]
ret := Sum(src)
if !same(ret, v.expect) {
t.Errorf("Test %d Sum error Got: %v Expected: %v", j, ret, v.expect)
}
if !isValidGuard(gsrc, srcGd, gdLn) {
t.Errorf("Test %d Guard violated in src vector %v %v", j, gsrc[:gdLn], gsrc[len(gsrc)-gdLn:])
}
}
}
}
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